Viagra (Viagra)
Erectile Dysfunction Treatment
Viagra is the world's most recognized erectile dysfunction treatment. Developed by Pfizer, it contains sildenafil citrate and has helped millions of men worldwide regain their sexual confidence.
Table of Contents
Viagra Product Information
Viagra is the world's most well-known erectile dysfunction medication, developed by Pfizer and first approved in 1998. It contains the active ingredient sildenafil citrate and has revolutionized the treatment of ED, helping millions of men worldwide regain their sexual confidence and improve their quality of life.
As the original branded sildenafil product, Viagra has undergone extensive clinical testing and has a well-established safety profile. It is effective in approximately 82% of men with erectile dysfunction, regardless of the underlying cause — whether physical, psychological, or a combination of both.
Viagra works by enhancing the natural erectile response to sexual stimulation. It does not cause spontaneous erections and requires sexual arousal to be effective.
Viagra contains sildenafil citrate, which belongs to a class of medications called PDE5 inhibitors. When a man is sexually aroused, nitric oxide is released in the penis, triggering the production of cGMP. This chemical relaxes the smooth muscles and allows blood to flow into the penis, creating an erection. PDE5 normally breaks down cGMP, but Viagra blocks this enzyme, allowing cGMP levels to remain elevated and maintaining the erection for longer.
Take one Viagra tablet approximately 1 hour before planned sexual activity. Swallow the tablet whole with water. Avoid taking Viagra with a heavy or high-fat meal as this may delay its effects. Do not take more than one tablet in 24 hours.
Viagra typically starts working within 30-60 minutes. For optimal results, take it on an empty stomach or after a light meal. Some men may notice effects within 15 minutes.
The effects of Viagra typically last for 4-6 hours. During this time, achieving an erection should be easier with sexual stimulation. The duration may vary between individuals.
Viagra Quick View
| Active Ingredient | Sildenafil Citrate |
|---|---|
| Manufacturer | Pfizer |
| Type | PDE5 Inhibitor |
| Onset | 30-60 minutes |
| Duration | 4-6 hours |
| Food Interaction | Best taken on empty stomach |
| Alcohol | Limit alcohol consumption |
| Prescription | Prescription required |
Viagra Side Effects
Common Side Effects
- Headache
- Facial flushing
- Indigestion
- Nasal congestion
- Dizziness
Uncommon Side Effects
- Visual disturbances
- Nausea
- Muscle pain
- Skin rash
Rare Side Effects
- Priapism
- Sudden hearing loss
- Sudden vision loss
- Heart attack
Important Warning: Seek immediate medical help if you experience an erection lasting more than 4 hours, sudden vision or hearing loss, or chest pain. Never take Viagra with nitrate medications.
More Information About Viagra
Storage
Store below 30°C. Keep in original packaging and out of reach of children.
Contraindications
Do not use with nitrates, in severe cardiovascular disease, after recent stroke or heart attack, with severe hepatic impairment, or if allergic to sildenafil.
Drug Interactions
Interacts with nitrates, alpha-blockers, CYP3A4 inhibitors (ketoconazole, erythromycin), HIV protease inhibitors, and other ED medications.
Viagra FAQs
Yes, Viagra contains the same active ingredient (sildenafil citrate) as generic Sildenafil. The main difference is branding and price — Viagra is the original branded product by Pfizer.
Viagra is typically more expensive than generic Sildenafil due to its brand name. Prices vary depending on dosage and quantity. Generic Sildenafil offers the same effectiveness at a lower cost.
Viagra is not approved for use in women. While some studies have explored its effects on female sexual dysfunction, it is currently only licensed for men with erectile dysfunction.
Viagra can be safe for older men, but a lower starting dose (25mg) is often recommended. Older men may be more susceptible to side effects and should consult their doctor before use.
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Content last updated: 26 Mar 2026
Viagra Reviews
Based on 32,150 reviews
The original and still the best in my experience. Viagra works quickly and effectively every single time.
Reliable medication. I've been using it for over a year with consistent results. Slight headache occasionally.
Viagra restored my confidence completely. Works within 30 minutes and lasts about 4-5 hours for me.
Good medication but I prefer taking it on an empty stomach for best results. Otherwise very effective.
Excellent. My doctor recommended starting with 50mg and it was perfect. No need to increase the dose.
Been using Viagra for years. Consistently effective and I trust the brand name quality.
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