Sildenafil Citrate: What You Need to Know
Here’s a straight answer: sildenafil citrate treats erectile dysfunction (ED) and certain types of pulmonary hypertension. If you’re curious how it works, what to watch for, or how to buy it safely online, this page gives clear, practical tips without medical fluff.
How sildenafil works and common uses
Sildenafil relaxes blood vessels, which helps blood flow into the penis for an erection and lowers pressure in lung arteries for pulmonary hypertension. For ED, people usually take 25–100 mg about 30–60 minutes before sex. The effect can last around 4 hours, though that doesn’t mean you’ll have a constant erection—sexual stimulation is still needed. For pulmonary arterial hypertension, the prescription form (Revatio) is often 20 mg three times a day. Don’t mix dosing for one use with the other—your doctor will prescribe the right form and amount.
Common short-term side effects are headache, flushing, nasal congestion, and indigestion. Some people notice mild vision changes like a blue tint to vision. Serious but rare problems include sudden hearing loss, severe drops in blood pressure, or priapism—an erection lasting more than 4 hours. If that happens, get emergency care right away.
Safety, interactions, and buying tips
Never take sildenafil with nitrates (they’re in some chest pain meds). Mixing them can crash your blood pressure and be life-threatening. Be cautious if you take alpha-blockers, certain antifungals, or HIV protease inhibitors—these drugs can raise sildenafil levels and increase side effects. If you have heart disease, low blood pressure, or severe liver or kidney problems, talk to your doctor before using sildenafil.
Thinking of buying sildenafil online? Don’t chase the cheapest price. Look for a licensed pharmacy that asks for a prescription and provides clear contact info for a pharmacist or doctor. Check reviews and verify the pharmacy’s domain and address. Pills that come in unmarked packaging, lack batch numbers, or are dramatically cheaper than other sellers are red flags. If a site promises to ship without a prescription, avoid it—legitimate suppliers require one.
Storage is simple: keep pills at room temperature away from moisture and heat. Keep medication out of reach of children. If you miss a dose for PAH, take it as soon as you remember unless it’s almost time for the next dose; do not double up.
Questions you should ask your prescriber: Is sildenafil safe with my current meds? What dose fits my age and health? What side effects should I expect? Honest answers here will keep you safer and happier with treatment.
If you want links to trusted resources or a quick checklist for choosing an online pharmacy, scroll the tag posts on this page for related guides and buying tips.