Medically reviewed by:
Dr. Alexander Torres, MD, FACS, FECSM
Board-Certified Urologist & Fellow of the European Committee of Sexual Medicine
22+ years treating male sexual dysfunction
Last updated: November 18, 2025
What Is Kamagra (Sildenafil Citrate) Used For?
Kamagra contains sildenafil citrate – the exact same active ingredient as brand Viagra® developed by Pfizer. It is manufactured by Ajanta Pharma under WHO-GMP certification and used worldwide for:
- Treatment of erectile dysfunction (ED) in adult men
- Improvement of erection hardness, duration, and confidence
- Off-label use in Raynaud’s phenomenon and high-altitude pulmonary edema
Mechanism: selective inhibition of PDE5 → increased cGMP → relaxation of penile smooth muscle → enhanced blood flow during sexual stimulation.
2025 Comparison Table: Kamagra vs Other PDE5 Inhibitors
| Feature | Kamagra / Viagra (Sildenafil) | Cialis (Tadalafil) | Levitra (Vardenafil) | Spedra (Avanafil) |
|---|---|---|---|---|
| Onset of action | 30–60 min | 30–120 min | 25–60 min | 15–30 min |
| Duration | 4–6 hours | Up to 36 hours | 4–6 hours | 4–6 hours |
| Food/alcohol effect | Delayed by fatty meal | None | Moderate | Minimal |
| Success rate (all ED causes) | 84–87% | 81–85% | 80–83% | 77–80% |
| Daily dosing option | No | Yes (2.5–5 mg) | No | No |
| Best for | On-demand use | Spontaneity | Diabetes patients | Fastest onset |
Dosing & Administration
Kamagra Tablets
| Starting dose | 50 mg ~1 hour before activity |
| Usual effective dose | 100 mg |
| Maximum frequency | Once per 24 hours |
| With fatty meal | May delay onset |
Kamagra Oral Jelly (100 mg sachet)
| Onset | 15–30 minutes |
| Best taken | On empty stomach |
| Flavors | Pineapple, orange, strawberry, etc. |
Side Effects (Usually Mild & Transient)
- Headache (16%)
- Flushing (10%)
- Dyspepsia (7%)
- Nasal congestion (4%)
- Visual disturbances (blue tint, <3%)
Pregnancy & Safety Notes
Not indicated for women. Limited data suggest sildenafil is safe in pregnancy for pulmonary hypertension (Revatio®), but not studied for ED.
Official Sources
- FDA Label 2024: Viagra (Sildenafil Citrate) Prescribing Information
- Landmark 1998 NEJM Study: PubMed – Sildenafil for Erectile Dysfunction (NEJM 1998)
Verified Patient Reviews (2024–2025)
Frequently Asked Questions (FAQ)
