Sildenafil Teva
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Understanding Viagra's side effects is crucial for safe treatment of erectile dysfunction. This comprehensive guide covers common and serious side effects, when to seek medical help, and important safety information. EverydayMeds offers both branded Viagra and generic sildenafil options, allowing patients to choose the most suitable treatment following clinical assessment by our UK-licensed prescribers.
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When PDE5 is suppressed, blood is able to flow more freely through the body—including to the (you guessed it) penis.

More blood flow to the penis means harder, more satisfying erections once you're sexually stimulated.
Most patients tolerate Viagra (sildenafil) well, but some may experience mild side effects. Common reactions include headaches, facial flushing, indigestion, and nasal congestion. These effects typically occur within 1-2 hours of taking the medication and usually resolve naturally. Dizziness and visual disturbances such as changes in colour perception or increased light sensitivity may also occur. These common side effects are generally dose-related and may be less noticeable with lower doses.
Whilst uncommon, some side effects require immediate medical intervention. Priapism - an erection lasting more than 4 hours - constitutes a medical emergency and can cause permanent damage if untreated. Sudden vision loss or hearing problems, though rare, require urgent assessment. Chest pain, irregular heartbeat, or severe dizziness during sexual activity should prompt immediate medical consultation. Severe allergic reactions including difficulty breathing, swelling of face or throat, or skin rashes necessitate emergency treatment.
Several strategies can help minimise side effects. Taking Viagra on an empty stomach may reduce indigestion but could increase other side effects. Avoiding alcohol and fatty meals can improve tolerance. Starting with the lowest effective dose (typically 25mg or 50mg) allows assessment of individual response. Patients experiencing persistent headaches might benefit from staying well-hydrated and avoiding alcohol. If side effects persist or worsen, consulting with a healthcare provider about dose adjustment is recommended.
Viagra can interact dangerously with certain medications. Nitrates used for chest pain create a potentially fatal drop in blood pressure when combined with sildenafil. Alpha-blockers for blood pressure or prostate problems may cause dizziness or fainting. Some HIV medications, antifungal drugs, and antibiotics can increase sildenafil levels, potentially worsening side effects. Patients must disclose all medications during consultation to ensure safe prescribing.
EverydayMeds offers both branded Viagra and generic sildenafil containing the same active ingredient. Both formulations have identical side effect profiles and effectiveness. The choice between branded and generic options often depends on patient preference and cost considerations. Our clinical assessment process ensures the most appropriate treatment regardless of brand choice, with ongoing support for managing any side effects that may occur.
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