Sildenafil

What to know before taking sildenafil 100 mg

• This strength is high; do not take it unless a clinician has prescribed it for you and confirmed it is appropriate.
• Never combine it with nitrates (such as nitroglycerin), riociguat, or certain street drugs; this pairing can cause a sudden, unsafe drop in blood pressure.
• If you use alpha‑blockers, other blood‑pressure medicines, or certain antifungals or HIV medicines, tell your clinician; timing and dose adjustments may be needed.
• Pay attention to how you feel. Seek urgent care for chest pain, breathlessness, sudden vision changes, or a painful erection that lasts more than 4 hours.
• Allow time: take it as directed (often about 30–60 minutes before activity) and avoid heavy meals or excess alcohol, which can increase unwanted effects.
• Do not take more than one dose in 24 hours, and do not share this medicine with anyone else.

I’m sharing this because I care about your safety. When in doubt, pause and check with a qualified clinician before you take it.

Things to know before taking sildenafil 50 mg

• Do not take it if you use nitrates (for chest pain) or riociguat; this mix can cause a dangerous drop in blood pressure.
• Tell your clinician about heart, stroke, liver, or kidney problems, or if you’ve had vision loss; this helps decide if it’s safe for you.
• It can lower blood pressure; stand up slowly and watch for dizziness or fainting, especially if you take blood pressure medicines or alpha-blockers.
• It does not protect against infections; use protection to lower risk of sexually transmitted infections.
• Avoid heavy meals, grapefruit, and excess alcohol; they can change how it works or increase side effects.
• Only take it as prescribed, not more often than directed, and seek help right away for erections lasting more than 4 hours or sudden vision or hearing changes.
• This information is for education and does not replace personal medical advice—check with your clinician about what’s right for you.