Prescription
Prescription RequiredGenericTadalafil Tablets
Tadalafil is an FDA-approved medicine that helps men with erectile dysfunction (ED) and symptoms of an enlarged prostate (benign prostatic hyperplasia, BPH). It belongs to a class of drugs called phosphodiesterase-5 (PDE-5) inhibitors. By relaxing blood vessels and smooth muscle, it improves blood flow where it is needed. Tablets are taken by mouth as directed by a healthcare provider.
Requires a valid prescription from your provider. Not sure if it's right for you? Ask a pharmacist.
These statements have not been evaluated by the Food and Drug Administration. Compounded products are not FDA-approved and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary. This information is for educational purposes only and is not medical advice — always consult your healthcare provider before starting any new treatment.
Clinical information
Medication information for patients and providers.
Use exactly as your healthcare provider tells you. Take the tablet with or without food and swallow with a glass of water. If you miss a dose, take it as soon as you remember unless it is almost time for your next dose. Do not take two doses at the same time.
Tadalafil blocks the PDE-5 enzyme in blood vessel walls. This keeps more of a natural chemical called cGMP around, which relaxes smooth muscle and lets more blood flow into the penis. For BPH, the same muscle-relaxing action eases pressure in the prostate and bladder. You may notice better erections in about 30–60 minutes, and the effect can last up to 36 hours. Relief of urinary symptoms may take several weeks of daily use.
Do not use if you take nitrates (like nitroglycerin) or guanylate cyclase stimulators (such as riociguat); the combination can cause dangerous drops in blood pressure. Do not use if you have severe heart disease and your doctor has told you to avoid sexual activity. Do not use if you have had a recent heart attack or stroke within the past 90 days, uncontrolled high or low blood pressure, or severe liver disease. Do not use if you are allergic to tadalafil or any ingredients in this product. Not approved for anyone under 18 years old.
Serious interaction with any nitrate medication (Nitrostat, Imdur, isosorbide) or recreational "poppers" containing amyl nitrate. Use caution with alpha-blockers for prostate or blood pressure (tamsulosin, doxazosin) because of dizziness risk—your doctor may adjust timing or dose. Strong CYP3A4 inhibitors like ketoconazole, itraconazole, clarithromycin, ritonavir, and grapefruit juice can raise tadalafil levels and side effects; dose changes may be needed. Rifampin, carbamazepine, and St. John’s wort can lower tadalafil effectiveness. Limit alcohol to small amounts; heavy drinking can increase side effects such as fainting.
Very common (more than 1 in 10): headache. Common (1–10 in 100): flushing, upset stomach, back pain, muscle aches, stuffy or runny nose. These usually fade within a few hours. Uncommon (1–10 in 1,000): dizziness, blurred vision, swelling of eyelids. Rare but serious: prolonged erection lasting more than 4 hours (priapism), sudden vision loss in one or both eyes (NAION), sudden hearing decrease or loss, severe allergic reaction with rash and swelling. Call your doctor right away for chest pain, fainting, or any serious or lasting side effect.
Store at room temperature 68-77°F (20-25°C). Keep tablets in the original, tightly closed container, away from moisture, heat, and direct light. Do not store in the bathroom or near a kitchen sink. Keep out of reach of children and pets. Dispose of unused or expired tablets through a pharmacy take-back program or mix them with used coffee grounds in a sealed plastic bag before placing in household trash.
Frequently asked questions.
For most men, taking one tablet at least 30 minutes before sexual activity works well, but it can be taken up to 2 hours ahead. Always follow the timing recommended by your healthcare provider.
Some men use a low dose (2.5 mg or 5 mg) once daily for continuous effect. Others take a higher dose (10 mg or 20 mg) only when needed. Your doctor will decide which plan is safest for you.
A small amount of alcohol is usually fine, but heavy drinking can drop your blood pressure and increase dizziness or fainting. Limit yourself to 1–2 standard drinks and skip alcohol if you feel light-headed.
No. Tadalafil is not approved for women or anyone under 18. It has not been proven safe or effective in these groups.
If you are using tadalafil daily for BPH, it may take 2–4 weeks to notice easier urination and less urgency. Keep taking it as prescribed and report any concerns to your doctor.
Go to the nearest emergency room right away. A long-lasting erection (priapism) can permanently damage the penis if not treated quickly.
Many blood pressure drugs can be taken safely with tadalafil, but some, like alpha-blockers, may cause extra dizziness. Tell your doctor every prescription and over-the-counter medicine you use so doses can be adjusted if needed.
Yes, tadalafil does not cause withdrawal. However, your symptoms may return. Talk with your provider before stopping so you understand what to expect and whether other treatments might help.
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