Caverta (sildenafil) works for many men with erectile dysfunction, but like any medicine it can cause unwanted effects. Most reactions are mild and short‑lived. This page explains the common problems you might feel, the rare but serious issues to watch for, and clear steps to lower risk.
The most frequent complaints are headache, facial flushing, indigestion, and a blocked or runny nose. Dizziness and lightheadedness can happen, especially after standing up quickly. Some users report temporary vision changes — colors looking a bit blue or slightly blurred — that usually fade within a few hours. These symptoms often start within thirty to sixty minutes after a dose and resolve without treatment.
If side effects bother you, try starting at a lower dose after talking with your prescriber. Taking Caverta on an emptier stomach speeds its effect; high‑fat meals slow it down. Avoid heavy drinking before you take it — alcohol increases the chance of dizziness and can weaken the effect. Over‑the‑counter pain relievers can help headaches, but check with your doctor before mixing medicines.
Certain symptoms need immediate care. If an erection lasts longer than four hours, go to emergency services — prolonged erections can cause permanent harm. Also seek urgent help for sudden chest pain, fainting, sudden loss of vision, or sudden hearing loss.
Do not use Caverta with nitrate medicines for chest pain. The combination can cause a severe drop in blood pressure and fainting. Tell any treating clinician that you take Caverta before they give nitrates. Be careful with alpha‑blockers used for prostate issues or high blood pressure — your doctor may start lower and monitor you. Strong enzyme inhibitors such as some HIV protease inhibitors, certain antifungal drugs, and some macrolide antibiotics can raise sildenafil levels; dose adjustments may be needed.
Typical dosing is a tablet taken about one hour before sexual activity. Many doctors start with 50 mg and adjust based on response and side effects — 25 mg if you feel side effects, 100 mg if 50 mg is not effective and you tolerate it. Do not take more than one dose in 24 hours. Store Caverta at room temperature away from moisture and heat. If you suspect a counterfeit product or feel unusually strong side effects, stop the pill and contact your pharmacist or doctor right away.
Share your health history before starting Caverta: heart disease, recent heart attack or stroke, uncontrolled blood pressure, severe liver or kidney problems, and certain eye conditions should change the choice or dose. Older adults are usually started on lower doses and monitored more closely.
Practical tips: follow the prescribed dose, avoid buying pills from unverified sources, do not mix Caverta with recreational nitrate products (poppers), and limit alcohol. Keep a list of your medicines and bring it to appointments. If side effects persist or worry you, call your healthcare provider for advice — timely action prevents complications.
Learn all about Caverta—what it is, how it works, its effects, tips for safe use, and facts every user should know before starting this ED medication.
