Seek immediate medical attention if you experience a severe reaction, such as difficulty breathing, swelling of the face, lips, tongue, or throat, or hives.
Common Skin Reactions
- Rash: This can manifest as red, itchy bumps, or blotches. It may appear anywhere on the body. Note the location, size, and shape of the rash. Hives (urticaria): Raised, itchy welts that can be various sizes and spread rapidly. Erythema multiforme: Characterized by target-like lesions (bull’s-eye rash) with concentric rings of color. Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN): These are rare but serious skin reactions causing widespread blistering and skin shedding. This requires immediate emergency medical care.
These reactions can occur at any time after taking Viagra, from immediately to several days later.
Less Common Reactions
- Photosensitivity: Increased sensitivity to sunlight, leading to sunburn or rash. Purpura: Purple or red spots on the skin caused by bleeding under the skin.
Document the timing of the reaction relative to Viagra intake. Note the severity and any other symptoms experienced alongside skin changes. This information is vital for your doctor’s assessment.
What to Do
Stop taking Viagra immediately if you develop a skin reaction. Contact your doctor or seek medical attention as soon as possible. Provide a complete medical history, including a list of all medications you take. Be prepared to describe the rash’s appearance, location, and any accompanying symptoms.
When to Seek Immediate Medical Help
Severe reactions require immediate emergency medical attention. Don’t hesitate to seek help if you suspect a serious adverse reaction.


