Viagros 4 Caps – 50 mg (Sildenafil Citrate – Viagra)
What is Viagros (Sildenafil)?
Viagra is the best-known and most popular medication for treating the inability of the penis to achieve or maintain an erection during sexual stimulation. Sildenafil citrate is the active ingredient in Viagra. Its potent effect in treating erectile dysfunction (ED) is recognized and proven. Initially, sildenafil was researched as a remedy for angina pectoris, a condition characterized by chest pain due to inadequate blood flow to the heart. However, during clinical trials, its remarkable impact on the penis's ability to achieve or maintain an erection was discovered. This effect allowed the scientific community to approve the component as an effective treatment for erectile dysfunction.
The mechanism of action of Viagra is as follows: it improves the penis's ability to achieve or maintain an erection by increasing blood flow to the organ during sexual arousal. Manufacturers produce it in different forms, with tablets being the most popular due to their convenience. In this way, companies are able to meet the needs of all consumers.
In addition to erectile dysfunction, the ingredient demonstrates efficacy in the treatment of pulmonary arterial hypertension (PAH). Its benefit for this diagnosis is clinically proven. The component is able to dilate blood vessels, which helps reduce resistance in the pulmonary vasculature. This action improves exercise capacity and slows the progression of the disease. Currently, new research is investigating the potential effect of the ingredient on other medical conditions, suggesting a wide range of therapeutic uses.
Benefits
Treatment of Erectile Dysfunction
Firstly, Viagros acts as a potency enhancer. Being a powerful weapon in the fight against erectile dysfunction, its components improve male sexual health. Millions of men worldwide suffer from the inability to respond to sexual stimulation, which affects their libido, quality of life, and psychological well-being. By ensuring a natural erectile response to sexual stimulation, Viagros improves sexual performance and satisfaction. This effect has been proven by millions of men who have used this potency pill.
Mean scores (±SE) of the domains of the International Index of Erectile Function for men who consumed sildenafil or placebo in the dose-escalation study, at baseline and at the end of 12 weeks, by intention-to-treat analysis.
Treatment of Pulmonary Arterial Hypertension
Viagra is also effective in treating Pulmonary Arterial Hypertension (PAH). This condition is characterized by high blood pressure in the pulmonary arteries. Sildenafil helps reduce blood pressure by acting on the pulmonary blood vessels and relaxing them. In addition, the progression of the disease is slowed and the ability to exercise is improved.
Mean changes from baseline, with 95% confidence intervals, in distance covered in the six-minute walk test at week 12 in the placebo and sildenafil groups.
Cardiovascular benefits
Increasing evidence is emerging of the effectiveness of sildenafil for cardiovascular problems. Numerous studies have proven that the component has a protective effect on the cardiovascular system. The ingredient demonstrates its effectiveness in reducing abrupt changes in oxidative processes under conditions of insufficient functioning of the antioxidant system. Furthermore, it improves the regulation of capillary blood flow through the dynamic alteration of vascular constriction and dilation phases. Finally, the medication enhances the method of supplying and transporting blood and biologically active substances through the vascular system to the body's organs and tissues.
In the graph, you can observe the maximum mean reductions in systolic (A) and diastolic (B) blood pressure in the supine position over time, induced by increasing doses of sildenafil in healthy middle-aged volunteers (n = 16 per group). The values represent the mean and standard deviation.
Improved exercise capacity
Another benefit of the ingredient is its ability to significantly increase physical performance. This advantage is due to its ability to improve blood circulation in the vessels and increase the supply of oxygen to the muscles. The increased blood flow in a closed system, caused by the pressure difference in different parts of the vascular bed, contributes to more efficient physical performance and reduced fatigue. Notable improvements in exercise tolerance provided by the substance are beneficial for athletes.
Mean changes from baseline, with 95% confidence intervals, in distance covered in the six-minute walk test at week 12 in the placebo and sildenafil groups.
Mechanism of action
To exert its beneficial effect on the body, sildenafil acts through a complex biochemical pathway. Suppression of the phosphodiesterase type 5 (PDE5) enzyme is an important part of this process. In addition to potency problems, the medication addresses other issues that contribute to men's health.
Normal physiology of erection
Penile erection during sexual arousal is a complex neurovascular process involving neural, psychological, hormonal, and vascular factors.
Sexual stimulation. The process begins with tactile and visual contact, which triggers the release of neurotransmitters in the nerve endings of the penile tissue.
Nitric oxide release. Nerve endings are located in the corpus cavernosum. These neurotransmitters affect them and stimulate the release of nitric oxide (NO).
Activation of guanylate cyclase. NO penetrates the smooth muscle cells of the penis and activates the enzyme guanylate cyclase.
cGMP production. Under the action of guanylate cyclase, the process of converting guanosine triphosphate (GTP) into cyclic guanosine monophosphate (cGMP) is accelerated. The latter acts as a vital signaling molecule for the organism.
Relaxation of smooth muscle. cGMP causes relaxation of the smooth muscle of the penis, reducing the intracellular level of calcium. This effect results in dilation of blood vessels, which, in turn, allows an increase in blood flow to the male organ.
Erection. The corpora cavernosa fill with blood due to improved circulation, causing the penis to harden and increase in size. Because the veins are compressed, blood cannot leave the organ, allowing the erection to be maintained.
Role of PDE5
An enzyme called phosphodiesterase type 5 (PDE5) is present in the pulmonary vessels and smooth muscle cells of the corpus cavernosum. Its main function is to break down cGMP into 5′-GMP. This action leads to the interruption of the signal for relaxation of the smooth muscle of the penis. As a result, blood flow is reduced, which causes loss of erection. Sildenafil has a therapeutic effect and acts selectively on PDE5, which allows for increased treatment efficacy. The drug's mechanism of action includes the following phases:
Interaction with PDE5. When the ingredient enters the body, it targets PDE5. By binding to it, Sildenafil acts selectively, preventing PDE5 from interacting with and degrading cGMP.
Prolonged duration of cGMP action. Because the drug suppresses the action of PDE5, the cGMP level remains elevated for a longer period, prolonging the relaxation of smooth muscle cells.
Increased vasodilation. Keeping the smooth muscle relaxed prolongs the dilation of blood vessels, allowing more blood to enter the penile tissue.
Prolonged erection . A stable and sufficient blood flow to the male sexual organ ensures the erection is maintained for longer.
Benefits for pulmonary and systemic circulation.
Although the ingredient is primarily used for potency treatment, it can still affect the pulmonary vasculature due to its effect on PDE5. The following benefits are observed:
Relaxation of pulmonary vessels. By suppressing PDE5 activity, the component relaxes pulmonary vessels, leading to their widening and improved bandwidth. This action reduces pulmonary vascular pressure and resistance, which is beneficial in conditions such as pulmonary arterial hypertension (PAH).
Systemic circulation. By acting on systemic vessels, the drug may cause a slight reduction in systemic blood pressure. Although this effect is relatively modest, it can become significant in patients with cardiovascular disease.
Molecular specificity and selectivity
There are different types (isoforms) of PDE in our bodies. They differ in terms of location and function. While other medications are not selective and act on all types of PDE, Sildenafil acts specifically on PDE5, leaving the other isoforms untouched. This peculiarity ensures high efficacy and minimizes unwanted side effects related to non-target tissues.
Pharmacokinetics and Metabolism
The drug's mechanism of action is strongly influenced by its absorption and metabolism:
Absorption . The medication is rapidly absorbed. Its maximum plasma concentration is reached 30 to 120 minutes after administration if taken on an empty stomach. Note that if you eat fatty meals, the absorption process of the active ingredient will be slowed, reducing the maximum plasma concentration.
Metabolism. Sildenafil metabolism occurs in the liver. The cytochrome P450 enzymes CYP3A4 and CYP2C9 participate in the process.
Elimination. The half-life of the ingredient is approximately 4 hours. It is excreted in both feces and urine. Most of the component (80%) is excreted in the feces, while only 13% of Sildenafil is eliminated from the body through urine.
Expanded mechanisms and more comprehensive benefits
In addition to its primary impact on male erectile function, the ingredient also affects muscles and blood vessels.
Improved endothelial function. Sildenafil improves the regulation of capillary blood flow by dynamically altering the constriction and dilation phases of blood vessels. This effect is achieved due to its ability to increase NO availability and cGMP levels. This action helps reduce oxidative stress and maintain vascular integrity.
It improves performance during workouts. The ability to improve blood circulation and promote vasodilation allows the ingredient to enhance physical performance. This action delays fatigue and increases endurance.
Possible improvement in muscle performance. The ability to improve blood circulation and oxygen supply makes Sildenafil beneficial for bodybuilders and sports enthusiasts. These characteristics increase endurance, reduce fatigue, and accelerate recovery.
Uses
Improved erectile function
Viagros emerges as an effective treatment to improve male potency. It helps restore libido and self-confidence. By inhibiting PDE5, the medication improves blood circulation in the male sexual organs, ensuring a firm and lasting erection. The effect is achieved through sexual stimulation and proven by clinical studies.
Increased blood flow
Viagra's mechanism of action involves modulating blood flow and vascularization. By inhibiting PDE5, the drug relaxes blood vessels, improving circulation. The increased blood flow to the smooth muscle of the penis contributes to an erection, allowing for the maintenance of a firm and lasting erection during sexual stimulation.
Improved endothelial function
The medication is beneficial for vascular health because it also affects endothelial function. The endothelium is a thin layer of cells that lines blood vessels. It regulates blood pressure and vascular tone. By improving endothelial function, the medication helps maintain healthy blood vessels, contributes to overall cardiovascular health, and reduces oxidative stress.
Enhanced exercise capacity
The ingredient reduces pulmonary vascular resistance and improves oxygen delivery to the muscles, which allows for increased exercise capacity during physical activity. This characteristic results in better physical performance and increased endurance during training.
Enhancing muscle performance
Several studies indicate that the drug improves muscle performance, which is especially relevant for bodybuilders and athletes. The improved oxygen supply and blood flow increase muscle endurance, reduce fatigue, and accelerate recovery after exercise.
Dosage, administration and precautions
Dosage
For most patients, it is recommended to start treatment with Viagros 50 mg. Men should take it 1 hour before planned sexual activity. Additionally, it is possible to increase the dose to 100 mg or reduce it to 25 mg. If you are using the medication to treat Pulmonary Arterial Hypertension (PAH), the dosage is 20 mg 3 times a day.
Administration
Viagos is taken orally with water, with or without food. However, remember that consuming fatty meals while taking the medication can significantly affect its absorption and effectiveness. To obtain the desired effect and ensure better results, it is advisable to take the medication on an empty stomach or at least two hours after a meal. Note that the medication will not work without sexual stimulation.
First responders: Men report achieving an erection in just 12 minutes after taking Viagros.
Average response: Most men feel the benefits of the medication in about 27 minutes.
Maximum effect: the maximum concentration of the ingredient in the bloodstream is reached in approximately 57 minutes. This peak can be delayed by up to an hour if ingested with food, as illustrated in the graph.
Half-life: Sildenafil is metabolized and excreted from the bloodstream within 4 hours.
Window of effectiveness: some men are able to achieve an erection up to 10 hours after taking the medication, although its effectiveness decreases over time.
Elimination: The drug is excreted from the bloodstream within 24 hours.
Impact of food: taking Viagros with a high-fat meal can delay its absorption, resulting in slower action and a lower peak plasma concentration. Therefore, it is advisable to take the medication on an empty stomach or two hours after a meal to obtain the best results.
Sexual stimulation: It is important to emphasize that sexual stimulation is necessary. The medication does not cause an erection without sexual arousal.
Dosage adjustments
If the desired effect is not achieved with a dose of 50 mg, the dosage needs to be adjusted.
Precautions
Cardiovascular disease. Patients with cardiovascular problems should use Viagros with caution and consult a doctor before administration.
Do not mix with alcohol. Men should avoid consuming alcohol along with or before taking Viagros, as alcohol can increase the risk of significant drops in blood pressure and delay the absorption of the medication.
Nitrates and nitric oxide donors. The use of Viagra with these donors is not recommended due to the high risk of severe hypotension.
Alpha blockers. Combining this medication with these substances may cause symptomatic hypotension, therefore, consumers should exercise caution.
Hepatic and renal insufficiency. Patients with hepatic or renal insufficiency may require dose adjustments.
Side effects
Headache. 16% of users report mild headaches.
Facial flushing. Approximately 10% of users report this condition. It is characterized by a feeling of warmth or redness in the face, neck, or chest.
Dyspepsia. Approximately 7% of users experience indigestion or stomach discomfort.
Nasal congestion. Approximately 4% of users report this side effect.
Visual disturbances. Approximately 3% of users report blurred vision, sensitivity to light, or a bluish tint to their vision.
Priapism. This is a prolonged and painful erection that lasts more than 4 hours. In this case, immediate medical attention is necessary to avoid permanent damage.
Sudden hearing loss. Rare cases of sudden hearing loss have been reported.
Myocardial infarction. Although rare, some users have experienced heart attacks. In particular, patients with pre-existing cardiovascular risk factors are prone to this side effect.
Monitoring and Management
Patients who experience severe side effects or signs of an allergic reaction should seek immediate medical attention.
Store
Store Viagros at room temperature between 20–25 °C (68–77 °F), in a tightly closed container, away from moisture, heat and direct light.
Keep out of reach of children and pets.
Patients should check the expiration date and not use the medication after that date to ensure safety and effectiveness.
What is Viagros (Sildenafil)?
Viagra is the best-known and most popular medication for treating the inability of the penis to achieve or maintain an erection during sexual stimulation. Sildenafil citrate is the active ingredient in Viagra. Its potent effect in treating erectile dysfunction (ED) is recognized and proven. Initially, sildenafil was researched as a remedy for angina pectoris, a condition characterized by chest pain due to inadequate blood flow to the heart. However, during clinical trials, its remarkable impact on the penis's ability to achieve or maintain an erection was discovered. This effect allowed the scientific community to approve the component as an effective treatment for erectile dysfunction.
The mechanism of action of Viagra is as follows: it improves the penis's ability to achieve or maintain an erection by increasing blood flow to the organ during sexual arousal. Manufacturers produce it in different forms, with tablets being the most popular due to their convenience. In this way, companies are able to meet the needs of all consumers.
In addition to erectile dysfunction, the ingredient demonstrates efficacy in the treatment of pulmonary arterial hypertension (PAH). Its benefit for this diagnosis is clinically proven. The component is able to dilate blood vessels, which helps reduce resistance in the pulmonary vasculature. This action improves exercise capacity and slows the progression of the disease. Currently, new research is investigating the potential effect of the ingredient on other medical conditions, suggesting a wide range of therapeutic uses.
Benefits
Treatment of Erectile Dysfunction
Firstly, Viagros acts as a potency enhancer. Being a powerful weapon in the fight against erectile dysfunction, its components improve male sexual health. Millions of men worldwide suffer from the inability to respond to sexual stimulation, which affects their libido, quality of life, and psychological well-being. By ensuring a natural erectile response to sexual stimulation, Viagros improves sexual performance and satisfaction. This effect has been proven by millions of men who have used this potency pill.
Mean scores (±SE) of the domains of the International Index of Erectile Function for men who consumed sildenafil or placebo in the dose-escalation study, at baseline and at the end of 12 weeks, by intention-to-treat analysis.
Treatment of Pulmonary Arterial Hypertension
Viagra is also effective in treating Pulmonary Arterial Hypertension (PAH). This condition is characterized by high blood pressure in the pulmonary arteries. Sildenafil helps reduce blood pressure by acting on the pulmonary blood vessels and relaxing them. In addition, the progression of the disease is slowed and the ability to exercise is improved.
Mean changes from baseline, with 95% confidence intervals, in distance covered in the six-minute walk test at week 12 in the placebo and sildenafil groups.
Cardiovascular benefits
Increasing evidence is emerging of the effectiveness of sildenafil for cardiovascular problems. Numerous studies have proven that the component has a protective effect on the cardiovascular system. The ingredient demonstrates its effectiveness in reducing abrupt changes in oxidative processes under conditions of insufficient functioning of the antioxidant system. Furthermore, it improves the regulation of capillary blood flow through the dynamic alteration of vascular constriction and dilation phases. Finally, the medication enhances the method of supplying and transporting blood and biologically active substances through the vascular system to the body's organs and tissues.
In the graph, you can observe the maximum mean reductions in systolic (A) and diastolic (B) blood pressure in the supine position over time, induced by increasing doses of sildenafil in healthy middle-aged volunteers (n = 16 per group). The values represent the mean and standard deviation.
Improved exercise capacity
Another benefit of the ingredient is its ability to significantly increase physical performance. This advantage is due to its ability to improve blood circulation in the vessels and increase the supply of oxygen to the muscles. The increased blood flow in a closed system, caused by the pressure difference in different parts of the vascular bed, contributes to more efficient physical performance and reduced fatigue. Notable improvements in exercise tolerance provided by the substance are beneficial for athletes.
Mean changes from baseline, with 95% confidence intervals, in distance covered in the six-minute walk test at week 12 in the placebo and sildenafil groups.
Mechanism of action
To exert its beneficial effect on the body, sildenafil acts through a complex biochemical pathway. Suppression of the phosphodiesterase type 5 (PDE5) enzyme is an important part of this process. In addition to potency problems, the medication addresses other issues that contribute to men's health.
Normal physiology of erection
Penile erection during sexual arousal is a complex neurovascular process involving neural, psychological, hormonal, and vascular factors.
Sexual stimulation. The process begins with tactile and visual contact, which triggers the release of neurotransmitters in the nerve endings of the penile tissue.
Nitric oxide release. Nerve endings are located in the corpus cavernosum. These neurotransmitters affect them and stimulate the release of nitric oxide (NO).
Activation of guanylate cyclase. NO penetrates the smooth muscle cells of the penis and activates the enzyme guanylate cyclase.
cGMP production. Under the action of guanylate cyclase, the process of converting guanosine triphosphate (GTP) into cyclic guanosine monophosphate (cGMP) is accelerated. The latter acts as a vital signaling molecule for the organism.
Relaxation of smooth muscle. cGMP causes relaxation of the smooth muscle of the penis, reducing the intracellular level of calcium. This effect results in dilation of blood vessels, which, in turn, allows an increase in blood flow to the male organ.
Erection. The corpora cavernosa fill with blood due to improved circulation, causing the penis to harden and increase in size. Because the veins are compressed, blood cannot leave the organ, allowing the erection to be maintained.
Role of PDE5
An enzyme called phosphodiesterase type 5 (PDE5) is present in the pulmonary vessels and smooth muscle cells of the corpus cavernosum. Its main function is to break down cGMP into 5′-GMP. This action leads to the interruption of the signal for relaxation of the smooth muscle of the penis. As a result, blood flow is reduced, which causes loss of erection. Sildenafil has a therapeutic effect and acts selectively on PDE5, which allows for increased treatment efficacy. The drug's mechanism of action includes the following phases:
Interaction with PDE5. When the ingredient enters the body, it targets PDE5. By binding to it, Sildenafil acts selectively, preventing PDE5 from interacting with and degrading cGMP.
Prolonged duration of cGMP action. Because the drug suppresses the action of PDE5, the cGMP level remains elevated for a longer period, prolonging the relaxation of smooth muscle cells.
Increased vasodilation. Keeping the smooth muscle relaxed prolongs the dilation of blood vessels, allowing more blood to enter the penile tissue.
Prolonged erection . A stable and sufficient blood flow to the male sexual organ ensures the erection is maintained for longer.
Benefits for pulmonary and systemic circulation.
Although the ingredient is primarily used for potency treatment, it can still affect the pulmonary vasculature due to its effect on PDE5. The following benefits are observed:
Relaxation of pulmonary vessels. By suppressing PDE5 activity, the component relaxes pulmonary vessels, leading to their widening and improved bandwidth. This action reduces pulmonary vascular pressure and resistance, which is beneficial in conditions such as pulmonary arterial hypertension (PAH).
Systemic circulation. By acting on systemic vessels, the drug may cause a slight reduction in systemic blood pressure. Although this effect is relatively modest, it can become significant in patients with cardiovascular disease.
Molecular specificity and selectivity
There are different types (isoforms) of PDE in our bodies. They differ in terms of location and function. While other medications are not selective and act on all types of PDE, Sildenafil acts specifically on PDE5, leaving the other isoforms untouched. This peculiarity ensures high efficacy and minimizes unwanted side effects related to non-target tissues.
Pharmacokinetics and Metabolism
The drug's mechanism of action is strongly influenced by its absorption and metabolism:
Absorption . The medication is rapidly absorbed. Its maximum plasma concentration is reached 30 to 120 minutes after administration if taken on an empty stomach. Note that if you eat fatty meals, the absorption process of the active ingredient will be slowed, reducing the maximum plasma concentration.
Metabolism. Sildenafil metabolism occurs in the liver. The cytochrome P450 enzymes CYP3A4 and CYP2C9 participate in the process.
Elimination. The half-life of the ingredient is approximately 4 hours. It is excreted in both feces and urine. Most of the component (80%) is excreted in the feces, while only 13% of Sildenafil is eliminated from the body through urine.
Expanded mechanisms and more comprehensive benefits
In addition to its primary impact on male erectile function, the ingredient also affects muscles and blood vessels.
Improved endothelial function. Sildenafil improves the regulation of capillary blood flow by dynamically altering the constriction and dilation phases of blood vessels. This effect is achieved due to its ability to increase NO availability and cGMP levels. This action helps reduce oxidative stress and maintain vascular integrity.
It improves performance during workouts. The ability to improve blood circulation and promote vasodilation allows the ingredient to enhance physical performance. This action delays fatigue and increases endurance.
Possible improvement in muscle performance. The ability to improve blood circulation and oxygen supply makes Sildenafil beneficial for bodybuilders and sports enthusiasts. These characteristics increase endurance, reduce fatigue, and accelerate recovery.
Uses
Improved erectile function
Viagros emerges as an effective treatment to improve male potency. It helps restore libido and self-confidence. By inhibiting PDE5, the medication improves blood circulation in the male sexual organs, ensuring a firm and lasting erection. The effect is achieved through sexual stimulation and proven by clinical studies.
Increased blood flow
Viagra's mechanism of action involves modulating blood flow and vascularization. By inhibiting PDE5, the drug relaxes blood vessels, improving circulation. The increased blood flow to the smooth muscle of the penis contributes to an erection, allowing for the maintenance of a firm and lasting erection during sexual stimulation.
Improved endothelial function
The medication is beneficial for vascular health because it also affects endothelial function. The endothelium is a thin layer of cells that lines blood vessels. It regulates blood pressure and vascular tone. By improving endothelial function, the medication helps maintain healthy blood vessels, contributes to overall cardiovascular health, and reduces oxidative stress.
Enhanced exercise capacity
The ingredient reduces pulmonary vascular resistance and improves oxygen delivery to the muscles, which allows for increased exercise capacity during physical activity. This characteristic results in better physical performance and increased endurance during training.
Enhancing muscle performance
Several studies indicate that the drug improves muscle performance, which is especially relevant for bodybuilders and athletes. The improved oxygen supply and blood flow increase muscle endurance, reduce fatigue, and accelerate recovery after exercise.
Dosage, administration and precautions
Dosage
For most patients, it is recommended to start treatment with Viagros 50 mg. Men should take it 1 hour before planned sexual activity. Additionally, it is possible to increase the dose to 100 mg or reduce it to 25 mg. If you are using the medication to treat Pulmonary Arterial Hypertension (PAH), the dosage is 20 mg 3 times a day.
Administration
Viagos is taken orally with water, with or without food. However, remember that consuming fatty meals while taking the medication can significantly affect its absorption and effectiveness. To obtain the desired effect and ensure better results, it is advisable to take the medication on an empty stomach or at least two hours after a meal. Note that the medication will not work without sexual stimulation.
First responders: Men report achieving an erection in just 12 minutes after taking Viagros.
Average response: Most men feel the benefits of the medication in about 27 minutes.
Maximum effect: the maximum concentration of the ingredient in the bloodstream is reached in approximately 57 minutes. This peak can be delayed by up to an hour if ingested with food, as illustrated in the graph.
Half-life: Sildenafil is metabolized and excreted from the bloodstream within 4 hours.
Window of effectiveness: some men are able to achieve an erection up to 10 hours after taking the medication, although its effectiveness decreases over time.
Elimination: The drug is excreted from the bloodstream within 24 hours.
Impact of food: taking Viagros with a high-fat meal can delay its absorption, resulting in slower action and a lower peak plasma concentration. Therefore, it is advisable to take the medication on an empty stomach or two hours after a meal to obtain the best results.
Sexual stimulation: It is important to emphasize that sexual stimulation is necessary. The medication does not cause an erection without sexual arousal.
Dosage adjustments
If the desired effect is not achieved with a dose of 50 mg, the dosage needs to be adjusted.
Precautions
Cardiovascular disease. Patients with cardiovascular problems should use Viagros with caution and consult a doctor before administration.
Do not mix with alcohol. Men should avoid consuming alcohol along with or before taking Viagros, as alcohol can increase the risk of significant drops in blood pressure and delay the absorption of the medication.
Nitrates and nitric oxide donors. The use of Viagra with these donors is not recommended due to the high risk of severe hypotension.
Alpha blockers. Combining this medication with these substances may cause symptomatic hypotension, therefore, consumers should exercise caution.
Hepatic and renal insufficiency. Patients with hepatic or renal insufficiency may require dose adjustments.
Side effects
Headache. 16% of users report mild headaches.
Facial flushing. Approximately 10% of users report this condition. It is characterized by a feeling of warmth or redness in the face, neck, or chest.
Dyspepsia. Approximately 7% of users experience indigestion or stomach discomfort.
Nasal congestion. Approximately 4% of users report this side effect.
Visual disturbances. Approximately 3% of users report blurred vision, sensitivity to light, or a bluish tint to their vision.
Priapism. This is a prolonged and painful erection that lasts more than 4 hours. In this case, immediate medical attention is necessary to avoid permanent damage.
Sudden hearing loss. Rare cases of sudden hearing loss have been reported.
Myocardial infarction. Although rare, some users have experienced heart attacks. In particular, patients with pre-existing cardiovascular risk factors are prone to this side effect.
Monitoring and Management
Patients who experience severe side effects or signs of an allergic reaction should seek immediate medical attention.
Store
Store Viagros at room temperature between 20–25 °C (68–77 °F), in a tightly closed container, away from moisture, heat and direct light.
Keep out of reach of children and pets.
Patients should check the expiration date and not use the medication after that date to ensure safety and effectiveness.