Tadafil 20 Mg Tablet (Tadalafil)

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40 Tablet/s$77.81$1.95 / tablet
80 Tablet/s$124.69$1.56 / tablet
120 Tablet/s$170.63$1.42 / tablet
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Estimated delivery: October 31, 2026 – November 5, 2026
Written by Dr Ambrose Chan, MD, MD Medically reviewed by Dr. Sabrina Castillon, MD, MD
Last updated on September 17, 2026
Description

About Tadafil 20 Mg Tablet (Tadalafil)

Medicine information

Active ingredient
Tadalafil
Indication
Erectile dysfunction (ED) in adult men
Manufacturer
Ajanta Pharma Limited
Packaging
Strip of 4 tablets
Strength
20 mg
Dosage form
Tablet
Route
Oral

Medicine overview

Tadafil 20 mg Tablet contains tadalafil, a phosphodiesterase type 5 (PDE5) inhibitor used to treat erectile dysfunction in adult men. Tadalafil helps increase blood flow to the penis during sexual stimulation, making it easier to achieve and maintain an erection. The 20 mg strength is an oral tablet intended for use according to a prescriber’s instructions. Sexual stimulation is still required for tadalafil to produce its erectile effect.

What it is used for

Tadafil 20 mg Tablet is used for the treatment of erectile dysfunction in adult men. Erectile dysfunction means having difficulty getting or keeping an erection firm enough for satisfactory sexual activity. Tadalafil 20 mg is an established strength for as-needed ED treatment. Tadalafil is also available in other dosing regimens for conditions such as benign prostatic hyperplasia, but those regimens should not be assumed to apply to this specific 20 mg product.

How it works

Tadalafil blocks phosphodiesterase type 5 (PDE5), an enzyme that breaks down cyclic guanosine monophosphate (cGMP). During sexual stimulation, nitric oxide increases cGMP in erectile tissue. By slowing its breakdown, tadalafil promotes relaxation of smooth muscle and increased blood flow into the penis. This supports an erection in response to sexual stimulation; tadalafil does not produce an erection without sexual arousal.

How it is taken

Take Tadafil 20 mg Tablet by mouth exactly as prescribed. Tadalafil used as needed for erectile dysfunction is taken before anticipated sexual activity and should not be taken more than once per day. The tablet may be taken with or without food. The 20 mg strength should not be assumed to be appropriate for daily ED treatment; established once-daily tadalafil regimens use lower strengths.

Important warnings

Do not take tadalafil with nitrates such as nitroglycerin or isosorbide medicines because the combination can cause a dangerous fall in blood pressure. It is also contraindicated with guanylate cyclase stimulators such as riociguat. Tell the prescriber about heart or blood-pressure problems, kidney or liver impairment, previous serious vision problems, bleeding disorders, penile deformity, or conditions that increase the risk of prolonged erections. Alpha-blockers, blood-pressure medicines, strong CYP3A4 inhibitors such as ketoconazole or ritonavir, and CYP3A4 inducers such as rifampin can interact with tadalafil. Do not combine it with other PDE5 inhibitors or erectile-dysfunction medicines unless specifically directed. Sexual activity may be unsafe for some people with significant cardiovascular disease. Obtain urgent medical care for an erection lasting more than 4 hours, sudden loss of vision, sudden decrease or loss of hearing, chest pain, fainting, or a severe allergic reaction.

Side effects and monitoring

Common effects include headache, indigestion, back pain, muscle aches, nasal congestion, flushing, and pain in the limbs. Less common but potentially serious reactions include prolonged or painful erection, severe hypotension, sudden vision loss associated with non-arteritic anterior ischemic optic neuropathy (NAION), and sudden decrease or loss of hearing. Seek urgent medical attention for an erection lasting more than 4 hours, sudden vision or hearing changes, chest pain, fainting, or signs of a serious allergic reaction. Routine laboratory monitoring is not generally specified for tadalafil used for ED, although medical assessment may be needed when relevant cardiovascular, kidney, liver, or interacting-drug concerns are present.

Pregnancy

Tadalafil for erectile dysfunction is not indicated for use in females. Pregnancy data for this ED use therefore do not establish a patient-use recommendation.

Breastfeeding

Tadalafil for erectile dysfunction is not indicated for use in females. There is no adequate information on tadalafil or its metabolites in human milk, effects on a breastfed child, or effects on milk production.

Food, drink and interactions

Large amounts of alcohol should be avoided while taking tadalafil. Both tadalafil and alcohol can lower blood pressure, and substantial alcohol consumption can increase the likelihood of dizziness, headache, increased heart rate, and a fall in blood pressure when standing.

Food and drink

Tadalafil tablets may be taken with or without food. Food does not require a specific timing adjustment under the prescribing information. Avoid excessive alcohol because it can increase blood-pressure-lowering effects.

Storage

Store below 30°C. Keep the medicine out of the reach of children.

Frequently asked questions

How long can tadalafil 20 mg help with erections?

Tadalafil taken as needed has been shown to improve erectile function for up to 36 hours after a dose. This does not mean an erection lasts for 36 hours; sexual stimulation is still required.

Can I take Tadafil 20 mg every day?

Do not take this 20 mg tablet every day unless your prescriber has specifically instructed you to do so. Established once-daily tadalafil treatment for erectile dysfunction uses lower strengths, while as-needed tadalafil should not be taken more than once per day.

Does food make tadalafil 20 mg less effective?

Tadalafil can be taken with or without food. Its prescribing information does not require taking the tablet on an empty stomach.

Can I drink alcohol after taking tadalafil?

Limit alcohol, especially large amounts. Tadalafil and alcohol both widen blood vessels, so combining tadalafil with substantial alcohol intake can increase dizziness and low blood pressure.

Why didn't tadalafil work the first time I took it?

Tadalafil requires sexual stimulation to support an erection. A poor response can have several causes, so do not take extra tablets or change the prescribed dose on your own; discuss persistent difficulty with your prescriber.

Can I take tadalafil if I use nitroglycerin for chest pain?

No. Tadalafil must not be combined with nitrates such as nitroglycerin because blood pressure can fall to a dangerous level.

What should I do if an erection lasts too long?

Get emergency medical care if an erection lasts more than 4 hours. A prolonged erection can damage penile tissue if it is not treated promptly.

Is Tadafil 20 mg a prescription medicine?

Yes. Tadalafil is prescription-only under the referenced U.S. prescribing information. Prescription classification can differ between countries.

Sources

  1. dailymed.nlm.nih.gov
  2. www.dailymed.nlm.nih.gov
  3. dailymed.nlm.nih.gov

Medical information notice: This information does not replace advice from a qualified healthcare professional. Use prescription medicine only as directed by the prescriber and the approved product information.

Additional information
Active IngredientsTadalafil
ManufacturerAjanta Pharma Ltd
PackagingQty
strength20mg
Delivery Time6 To 15 days
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