Sildenafil 100 mg: Uses, Benefits, Dosage, Side Effects & Precautions
What is Sildenafil 100 mg used for?
Sildenafil 100 mg is a prescription medicine primarily used to treat erectile dysfunction (ED) in adult men. VIGOUR MAX, marketed by Steris Healthcare, contains sildenafil, a phosphodiesterase type-5 (PDE5) inhibitor that helps improve blood flow to the penis when a man is sexually stimulated.
Erectile dysfunction can occur due to several factors, including vascular conditions, diabetes, certain medicines, psychological factors, or other health conditions. Sildenafil does not automatically cause an erection and does not increase sexual desire by itself. Sexual stimulation is required for the medicine to produce its intended effect.
A 100 mg strength is generally considered a higher commonly used dose, and it is not necessarily the appropriate starting dose for every individual. A healthcare professional should determine the suitable dose based on age, medical history, response, and other medicines being taken.
Why it's important
Erectile dysfunction can sometimes be associated with underlying cardiovascular, metabolic, or psychological conditions. Appropriate medical evaluation can therefore help identify contributing factors rather than treating the symptom alone.
VIGOUR MAX works by enhancing the natural erectile response during sexual stimulation. Sildenafil does this by supporting the nitric-oxide signaling pathway responsible for relaxation of smooth muscle and increased blood flow in penile tissue.
Using the medicine correctly is particularly important because sildenafil can interact dangerously with certain medicines, especially nitrates used for chest pain. It should never be taken casually or combined with recreational nitrate products.
Key Benefits
What are the benefits?
- Helps improve erectile function in adult men with erectile dysfunction.
- Supports increased blood flow to penile tissue during sexual stimulation.
- May help men achieve and maintain an erection sufficient for sexual activity.
- Acts through the PDE5 pathway involved in the normal erectile response.
- Can be effective for many men when used at an appropriate dose.
- Does not usually produce an erection without sexual stimulation.
The response to sildenafil varies between individuals. It is not an aphrodisiac and does not directly increase sexual desire, testosterone levels, or fertility.
Side Effects
Some individuals taking VIGOUR MAX may experience headache, facial flushing, indigestion, nasal congestion, dizziness, or visual disturbances.
These effects are generally related to the vasodilatory action of sildenafil and may be more noticeable at higher doses. Taking sildenafil with a large or high-fat meal may delay the onset of its effect.
Alcohol can also contribute to dizziness or lower blood pressure and may make erectile difficulties worse.
If side effects are persistent, severe, or interfere with normal activities, consult your healthcare professional.
Serious Side Effects
Seek immediate medical attention if an erection lasts longer than 4 hours, as prolonged erection (priapism) can cause permanent penile damage if not treated promptly.
Sudden loss of vision or sudden decrease in vision requires urgent medical assessment. Similarly, sudden hearing loss or significant hearing changes should be treated as a medical emergency.
Chest pain, fainting, severe dizziness, or serious allergic symptoms such as facial or throat swelling and difficulty breathing also require urgent medical care.
Available Substitute
There is no universal substitute for VIGOUR MAX. Other PDE5 inhibitors, such as tadalafil, vardenafil, or avanafil, may be considered by a healthcare professional depending on the patient's health status, desired duration of action, other medicines, and treatment response.
These medicines have different pharmacological properties and are not interchangeable on a milligram-for-milligram basis.
Do not switch between erectile-dysfunction medicines without medical advice, particularly if you take medicines for heart disease, blood pressure, or prostate symptoms.
Dosage Guidelines
Take VIGOUR MAX exactly according to your healthcare professional's instructions.
For erectile dysfunction, sildenafil is generally taken approximately 1 hour before anticipated sexual activity, although it may be taken within a broader window depending on individual response. It should not be taken more than once in a 24-hour period.
A 100 mg dose may be prescribed when a lower dose has not provided adequate effectiveness and is considered safe for the individual. Older adults and people with certain kidney or liver conditions may require a lower dose.
Swallow the tablet with water. Avoid taking it with a very heavy or high-fat meal if you want a faster onset.
Do not take an additional tablet if the first dose does not produce the desired effect.
Precautions & Warnings
Do not take sildenafil with:
- Nitrate medicines used for angina or chest pain
- Recreational nitrate-containing products such as “poppers”
- Riociguat or related soluble guanylate cyclase stimulators
Tell your healthcare professional if you have heart disease, uncontrolled blood pressure, previous stroke or heart attack, severe liver or kidney disease, retinitis pigmentosa, bleeding disorders, stomach ulcers, or anatomical penile abnormalities.
Inform your doctor about all medicines you take, particularly alpha-blockers, antihypertensives, antifungal medicines, certain antibiotics, HIV medicines, and other PDE5 inhibitors.
Avoid combining sildenafil with other erectile-dysfunction treatments unless specifically instructed by your healthcare professional.
How to Use
Take VIGOUR MAX orally with water approximately 30–60 minutes before sexual activity, or according to the instructions provided by your healthcare professional.
Sexual stimulation is necessary for sildenafil to work. Do not take more than one dose in 24 hours.
Avoid excessive alcohol because it can increase dizziness and may make it more difficult to achieve an erection.
If you experience chest pain during sexual activity after taking sildenafil, stop sexual activity and seek medical attention. Do not take nitrate medication for the chest pain without telling the emergency healthcare provider that you have taken sildenafil, because the combination can cause a dangerous fall in blood pressure.
Mechanism of Action
Sildenafil is a phosphodiesterase type-5 (PDE5) inhibitor.
During sexual stimulation, nitric oxide is released in penile tissue. Nitric oxide activates an enzyme called guanylate cyclase, which increases levels of cyclic guanosine monophosphate (cGMP). cGMP promotes relaxation of smooth muscle in the corpus cavernosum, allowing increased blood flow and facilitating an erection.
PDE5 normally breaks down cGMP. Sildenafil inhibits PDE5, allowing cGMP levels to remain elevated for longer. This enhances the natural erectile response to sexual stimulation.
Because sildenafil does not independently initiate the nitric oxide response, sexual stimulation remains necessary for an erection to occur.
Conclusion
Sildenafil 100 mg, marketed as VIGOUR MAX by Steris Healthcare, is a PDE5 inhibitor used to treat erectile dysfunction in adult men. It works by enhancing the nitric-oxide/cGMP pathway and increasing penile blood flow during sexual stimulation. A 100 mg dose should only be used when considered appropriate by a healthcare professional, as individual dose requirements vary. Never combine sildenafil with nitrate medicines or recreational nitrates, and seek urgent medical care for an erection lasting more than 4 hours, sudden vision or hearing loss, severe allergic symptoms, or significant cardiovascular symptoms. Proper medical evaluation and responsible use are essential for safe and effective treatment of erectile dysfunction.
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