Tadalafil: Uses, Dosage, Safety, and Buying Tips

Tadalafil stands out because it can work for up to 36 hours for many men. That longer window means less planning and more natural timing. It’s approved for erectile dysfunction (ED), daily treatment of BPH (enlarged prostate), and, at different doses, pulmonary arterial hypertension. Below you’ll find simple, practical guidance on how to use it, what to watch for, and how to buy it safely online.

How it works and basic dosing

Tadalafil is a PDE5 inhibitor. When you’re sexually aroused, it helps relax blood vessels and increase blood flow to the penis. For ED, common dosing options are 5 mg once daily or 10–20 mg taken as needed at least 30 minutes before sex. Men who want spontaneity often prefer the 5 mg daily plan; those who use it only sometimes pick 10–20 mg as needed. For BPH, doctors usually recommend 5 mg daily. Pulmonary hypertension uses higher, specialist-guided doses. Always follow your prescriber’s instructions—never self-adjust doses based on a friend’s experience.

Side effects, interactions, and safety

Typical side effects are headache, flushing, indigestion, back or muscle pain, and nasal congestion. These usually fade within hours. Stop the drug and get urgent help for chest pain, sudden vision loss, sudden hearing loss, fainting, or an erection lasting more than four hours (priapism). Never take tadalafil with nitrates (for chest pain) or riociguat—this combo can cause a dangerous drop in blood pressure.

Tadalafil can interact with alpha-blockers, some blood pressure medicines, and strong CYP3A4 inhibitors like ketoconazole or certain HIV meds. If you have heart disease, low blood pressure, liver or kidney problems, or take multiple meds, talk to your doctor before trying tadalafil. Limit heavy alcohol when using it; a lot of alcohol plus tadalafil raises the risk of dizziness and blood pressure drops.

Older adults may need lower starting doses. People with severe kidney or liver disease often require dose adjustments. If you’re unsure, your prescriber can run simple checks and adjust safely.

Thinking about buying tadalafil online? Choose pharmacies that ask for a prescription, list a physical address and phone number, and show registration or verification seals. Skip offers that promise huge discounts without asking for a prescription. Read the fine print on shipping, returns, and privacy. If a price sounds too good to be true, it probably is.

Alternatives include sildenafil and vardenafil, which act similarly but last for shorter periods. If tadalafil causes side effects or doesn’t help, record timing, dose, alcohol intake, and any symptoms and share that with your doctor. Sometimes a dose change or switching drugs fixes the problem.

ED can signal other health issues like diabetes or heart disease. If problems start suddenly or get worse, see a healthcare professional. This guide is practical info, not medical advice—talk to your clinician before starting or changing tadalafil.