Tadalafil 20mg

Generic For: Cialis

Tadalafil 20mg is the generic form of Cialis, a PDE5 inhibitor tablet used to treat erectile dysfunction (ED) and the urinary symptoms of benign prostatic hyperplasia (BPH). It works by increasing blood flow to help men achieve and maintain an erection. After a licensed provider reviews your health information and issues a valid prescription, your order ships discreetly from a licensed U.S. pharmacy.

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A PDE5 inhibitor for erectile dysfunction (ED) and symptoms of benign prostatic hyperplasia (BPH)

Tadalafil 20mg Quick Facts

Drug classPDE5 inhibitor
TreatsErectile dysfunction (ED), benign prostatic hyperplasia (BPH)
FormTablet
Typical dosingTake 1 tablet by mouth 1-4 hours before sexual activity (take on empty stomach). Never take more than 1 tablet in a 24 hour period.
Prescription requiredYes — prescription only

What Is Tadalafil 20mg?

Tadalafil is the generic version of Cialis, a prescription tablet in the phosphodiesterase-5 (PDE5) inhibitor class. It relaxes smooth muscle and increases blood flow, which helps men with erectile dysfunction achieve and maintain an erection during sexual stimulation. Tadalafil is also FDA-approved to relieve urinary symptoms of an enlarged prostate (BPH), such as difficulty starting urination and frequent urination. One notable feature of tadalafil is its long duration of action — it can work for up to 36 hours, which is why it is sometimes searched as the "weekend pill."

What Does Tadalafil 20mg Treat?

Erectile dysfunction (ED)
Signs and symptoms of benign prostatic hyperplasia (BPH)
Erectile dysfunction with coexisting BPH
Pulmonary arterial hypertension (as a different brand, Adcirca, at different dosing)

Tadalafil 20mg Dosage

ED (as needed): 10 mg by mouth at least 30 minutes before sexual activity; may increase to 20 mg or decrease to 5 mg; maximum once daily.
ED (once daily): 2.5 mg by mouth once daily; may increase to 5 mg once daily.
BPH (or ED plus BPH): 5 mg by mouth once daily, taken at the same time each day.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Tadalafil 20mg Side Effects

Common side effects

  • Headache
  • Indigestion or heartburn
  • Back pain
  • Muscle aches
  • Flushing
  • Stuffy or runny nose
  • Pain in arms or legs

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

  • Erection lasting more than 4 hours (priapism)
  • Sudden vision loss in one or both eyes
  • Sudden hearing decrease or loss, sometimes with ringing in the ears
  • Chest pain, dizziness, or fainting during sexual activity
  • Severe allergic reaction (rash, swelling, difficulty breathing)

Warnings & Interactions

Do not take with nitrates (e.g., nitroglycerin, isosorbide) — can cause a dangerous drop in blood pressure
Do not use with riociguat (Adempas)
Use caution with alpha-blockers or other blood pressure medications
Avoid or limit alcohol; excess alcohol may increase side effects
Avoid grapefruit juice, which can raise tadalafil levels
Tell your provider about heart problems; sexual activity may pose a cardiac risk for some patients
Dose adjustment may be needed with kidney or liver impairment or strong CYP3A4 inhibitors

Tell your prescriber about all medications, supplements, and health conditions before starting tadalafil 20mg.

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Frequently Asked Questions

What is tadalafil used for?

Tadalafil (generic Cialis) is FDA-approved to treat erectile dysfunction (ED) and the urinary symptoms of benign prostatic hyperplasia (BPH). It can be taken as needed before sexual activity or once daily at a lower dose, depending on your prescription.

Do I need a prescription for tadalafil?

Yes. Tadalafil is a prescription-only medication in the United States. A licensed healthcare provider must review your health history and confirm the medication is appropriate before it can be dispensed.

How does ordering and shipping work?

After you complete a brief health questionnaire, a licensed provider reviews your information. If a prescription is issued, your medication ships in discreet packaging from a licensed U.S. pharmacy directly to your door.

How long does tadalafil 20mg last?

Tadalafil can remain effective for up to 36 hours after a dose, longer than most other ED medications. It should not be taken more than once in a 24-hour period.

Is tadalafil the same as Cialis?

Yes. Tadalafil is the generic version of brand-name Cialis and contains the same active ingredient at the same strengths. Generics are FDA-approved and typically cost significantly less.

How should I take tadalafil for ED?

For as-needed use, take it at least 30 minutes before sexual activity, with or without food. Sexual stimulation is still required for it to work, and you should follow the exact dose your provider prescribes.

What should I avoid while taking tadalafil?

Do not take tadalafil with nitrate medications or riociguat, as this can cause a dangerous drop in blood pressure. Limit alcohol and avoid grapefruit juice, and tell your provider about all medications you take.