Viafil 100mg Tablet
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What is Viafil 100mg Used For?
- Viafil 100mg is the full-strength Sildenafil Citrate tablet by Weefsel Pharma, indicated for:
- Moderate to Severe Erectile Dysfunction – The standard maximum clinical dose providing maximum PDE-5 inhibition.
- Unreliable Response to Lower Doses – For men where 50mg sildenafil has proven inconsistently effective.
- Broad ED Aetiology – Effective for vascular, neurogenic, psychogenic, and mixed-cause erectile dysfunction.
How Does Viafil 100mg Work?
- Viafil 100mg contains Sildenafil Citrate 100mg, a potent PDE-5 inhibitor that:
- Maximally inhibits PDE-5 enzyme in corporal smooth muscle, maintaining peak cGMP concentrations during arousal.
- Produces robust vasodilation and sustained penile engorgement for firm, lasting erections.
- Sexual stimulation is required — erections are arousal-dependent even at this dose.
How to Use Viafil 100mg
Dosage: One 100mg tablet taken orally 30–60 minutes before sexual activity.
Timing: Onset 30–60 minutes; peak at 60–90 minutes; duration 4–6 hours.
Precaution: One dose per 24 hours maximum. Avoid nitrates absolutely. Limit alcohol. Discuss cardiovascular health with physician prior to use.
Side Effects of Viafil 100mg
Common Side Effects: Headache, facial flushing, nasal congestion, dyspepsia, back pain, visual disturbances, dizziness.
Serious Side Effects (seek medical help): Sudden vision or hearing loss, chest pain, severe hypotension, priapism (erection lasting more than 4 hours).
Viafil Dosage Comparison Guide
| Strength | Best For | Onset | Duration | Link |
|---|---|---|---|---|
| 25 mg | Lower strength option | 30–60 min | 4–6 hrs | View → |
| 50 mg | Standard strength option | 30–60 min | 4–6 hrs | View → |
| 100 mg | Popular strength option | 30–60 min | 4–6 hrs | Current |
| 150 mg | Higher strength option | 30–60 min | 4–6 hrs | View → |
| 200 mg | Maximum strength variant | 30–60 min | 4–6 hrs | View → |
* Always consult your doctor before changing your dosage. This information is for educational reference only.
Drug Interactions — Important Information
| Drug / Substance | Interaction Type | Risk Level | Action Required |
|---|---|---|---|
| Nitrates (e.g., GTN, isosorbide) | Severe hypotension | 🔴 Absolute Contraindication | Do NOT combine — risk of fatal BP drop |
| Other PDE-5 inhibitors | Additive vasodilation | 🔴 Contraindicated | Never combine two PDE-5 inhibitors |
| Alpha-blockers (e.g., tamsulosin) | Additive hypotension | 🟠 Serious | Use only under physician supervision |
| Ritonavir / HIV protease inhibitors | CYP3A4 inhibition — raises sildenafil plasma level | 🟠 Serious | Reduce sildenafil dose; physician supervision required |
| Ketoconazole / Itraconazole | CYP3A4 inhibition | 🟡 Moderate | Avoid or reduce dose |
| Alcohol (heavy use) | Enhances vasodilation | 🟡 Moderate | Limit alcohol consumption |
| Grapefruit juice | CYP3A4 inhibition — slows sildenafil clearance | 🟡 Moderate | Avoid grapefruit while taking sildenafil |
Always inform your doctor about all medications, supplements, and recreational substances you are taking before starting this medication. This list is not exhaustive.
Frequently Asked Questions
Q1: What is Viafil 100mg used for?
Viafil 100mg contains Sildenafil Citrate 100mg, the standard maximum clinical dose for erectile dysfunction. It treats moderate to severe ED by maximally inhibiting the PDE-5 enzyme to facilitate strong, sustained erections.
Q2: How does Viafil 100mg differ from Viafil 50mg?
Viafil 100mg delivers twice the active sildenafil dose of the 50mg tablet, providing stronger PDE-5 inhibition and more reliable erectile response in men who find 50mg insufficient.
Q3: How long does Viafil 100mg take to work?
Onset is typically 30 to 60 minutes. An empty stomach or light meal produces faster absorption. Peak plasma concentration and maximum effect occur approximately 60 to 90 minutes after ingestion.
Q4: How long do the effects of Viafil 100mg last?
Effects last 4 to 6 hours. During this time, erections can be achieved and maintained with sexual stimulation. Duration may vary based on individual metabolism and health status.
Q5: Is Viafil 100mg the same as branded Viagra 100mg?
Both contain 100mg of sildenafil citrate and work by the same mechanism. Viafil is a generic manufactured by Weefsel Pharma and is a cost-effective alternative to branded Viagra.
Q6: Can Viafil 100mg be taken with food?
Yes, but a high-fat meal significantly delays absorption. Take on an empty stomach or after a light, low-fat meal for fastest and most consistent onset. Avoid grapefruit juice.
Q7: What side effects are associated with Viafil 100mg?
Common side effects include headache, flushing, nasal congestion, indigestion, visual changes (blue tint or light sensitivity), back pain, and dizziness. These are typically mild and temporary.
Q8: Can Viafil 100mg be taken by men over 65?
Older men can use sildenafil 100mg but are often more sensitive to its effects. Physicians typically recommend starting with 25mg or 50mg in patients over 65 and titrating up only if needed and tolerated.
Q9: How does Viafil 100mg interact with antihypertensives?
Sildenafil has additive blood pressure-lowering effects when combined with antihypertensives or alpha-blockers. Start with the lowest effective dose and inform your doctor of all blood pressure medications.
Q10: Does Viafil 100mg work for psychogenic ED?
Yes. Sildenafil is effective for ED with a psychological component as well as physical causes. For purely psychogenic ED, a physician may also recommend counselling alongside pharmacotherapy.
Q11: Can I take Viafil 100mg every day?
Viafil 100mg is not for daily use. It is an on-demand medication taken before anticipated sexual activity. For daily ED management, lower-dose daily tadalafil is a more appropriate option.
Q12: Do I need a prescription for Viafil 100mg?
Yes. Sildenafil 100mg is a prescription-only medicine. A physician assessment confirms cardiovascular safety and appropriate dosing before starting treatment.
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Customer Reviews
Paul D.
USA · 3 months ago
“The product quality is pharmaceutical-grade. Packaging was professionally sealed. No signs of tampering on arrival.”
Marcus L.
UK · 2 weeks ago
“Reliable supplier. Tablets came in sealed blister packs with clear batch number and expiry date visible. Highly effective.”
Chris W.
USA · 6 weeks ago
“First order from Medionix — impressed. Product is authentic, packaging was sealed, delivery was faster than expected.”
Jack N.
France · 2 months ago
“Arrived safely in France in 14 days. Customs was not an issue. Product works as expected. Will order again.”
Nathan G.
Spain · 4 months ago
“Reasonable delivery to Spain — about 14 days. Product is exactly as described, tablets look and work authentic.”
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Clinical References
This product information is supported by peer-reviewed clinical evidence:
- Goldstein I, et al. (1998). Oral sildenafil in the treatment of erectile dysfunction. New England Journal of Medicine, 338(20), 1397–1404. [PubMed: 9580646]
- Burnett AL, et al. (2018). Erectile Dysfunction: AUA Guideline. Journal of Urology, 200(3), 633–641. [PubMed: 29746858]
- Hatzimouratidis K, et al. (2010). EAU Guidelines on Male Sexual Dysfunction. European Urology, 57(5), 804–814. [PubMed: 20189712]
- Lue TF. (2000). Erectile Dysfunction. New England Journal of Medicine, 342(24), 1802–1813. [PubMed: 10853004]
Disclaimer
The information provided on Medionix Pharma is intended for general informational purposes only. It should not be considered as medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional before using any medication or starting any treatment.
Medionix Pharma does not encourage self-medication. Customers are responsible for ensuring that purchases comply with local laws and prescription requirements in their country. If you have any questions or concerns regarding the content on our website, please contact us at sales@medionixpharma.com.