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Tadalafil (Pah) Tablet — prescription drug image

Tadalafil (Pah)

Tadalafil (PAH) 20MG

QUAD by MEDVi · 4-in-1 ED treatment

Tadalafil is one of the 4 meds in QUAD

Sildenafil, tadalafil, PT-141 & L-Citrulline in one sublingual dose · Works in ~15 min · Lasts up to 36 hours

See QUAD by MEDVi From $114/mo · Free online visit
QUAD by MEDVi is a compounded prescription treatment; eligibility is determined by a licensed provider after an online visit. Pricing and product details are set by MEDVi and may change. Not affiliated with, endorsed by, or equivalent to any brand-name medication or manufacturer.

What is Tadalafil (Pah)?

Tadalafil (PAH) is a phosphodiesterase type 5 (PDE5) inhibitor used primarily in the treatment of pulmonary arterial hypertension (PAH) to improve exercise capacity and delay clinical worsening. This medication works by relaxing blood vessels in the lungs, thereby increasing blood flow and reducing the workload on the heart.

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What is Tadalafil (Pah) ?

Tadalafil (PAH) is a phosphodiesterase type 5 (PDE5) inhibitor used primarily in the treatment of pulmonary arterial hypertension (PAH) to improve exercise capacity and delay clinical worsening. This medication works by relaxing blood vessels in the lungs, thereby increasing blood flow and reducing the workload on the heart.
  • Sudden loss of vision
  • Painful erection or an erection that lasts longer than 4 hours with or without pain
  • Lightheadedness, fainting
  • Chest pain, trouble breathing
  • Blistering, peeling, or red skin rash
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Sudden decrease in hearing or hearing loss, ringing in the ears, dizziness
  • Sudden decrease in hearing or hearing loss, ringing in the ears, dizziness
  • Sudden loss of vision
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
  • This medicine may cause the following problems: Low blood pressure (especially if taken with other medicines that lower blood pressure)Painful or prolonged erectionHearing or vision problems
  • Tell any doctor who treats you that you are using tadalafil.
  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, lung or breathing problems, diabetes, high cholesterol, cancer (including leukemia, multiple myeloma), sickle cell anemia, bleeding problems, stomach ulcer, problems with your penis, or eye problems. Tell your doctor if you have angina or chest pain during sex, heart disease, heart rhythm problems, high or low blood pressure, or a history of heart attack or stroke. Also tell your doctor if you smoke or drink alcohol.
Is tadalafil for pulmonary hypertension the same as Cialis?
Yes, it is the same active ingredient. The PAH version (brand names Adcirca and Alyq) is FDA-approved for pulmonary arterial hypertension and dosed at 40 mg once daily, while Cialis is the same tadalafil approved separately for erectile dysfunction and benign prostatic hyperplasia at different doses. Using PAH-labeled tadalafil is effectively the same drug at a different dose.
How much tadalafil is used to treat pulmonary arterial hypertension?
The FDA-approved PAH formulation (Adcirca/Alyq) is taken as 40 mg once daily. Your prescriber may adjust the dose if you have kidney or liver problems or take certain other medications, so always follow the exact instructions on your prescription.
Can you take tadalafil for PAH with nitrates?
No. Tadalafil is contraindicated with any nitrate medication, such as nitroglycerin or isosorbide, because the combination can cause a severe and potentially fatal drop in blood pressure. It is also contraindicated with the PAH drug riociguat (Adempas). Tell your prescriber about every medicine you take.
Is Adcirca available as a generic?
Yes. Tadalafil, the active ingredient in Adcirca (and Alyq), is available as a generic, which is typically much less expensive than the brand. Prices still vary by pharmacy, so it is worth comparing the coupon price before you fill.
How long does it take tadalafil to work for pulmonary hypertension?
Tadalafil for PAH is taken once daily to provide ongoing benefit, and improvements in exercise ability build over continued treatment rather than after a single dose. Ask your prescriber what to expect for your situation and keep taking it as directed even if you do not feel an immediate change.
How much does Tadalafil (Pah) cost without insurance?
The price of Tadalafil (Pah) without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you.
What are the common side effects of Tadalafil (Pah)?
Common side effects of Tadalafil (Pah) may include: Sudden loss of vision, Painful erection or an erection that lasts longer than 4 hours with or without pain, Lightheadedness, fainting, Chest pain, trouble breathing, Blistering, peeling, or red skin rash. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Tadalafil (Pah)?
Generic versions may be available for Tadalafil (Pah). Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Tadalafil (Pah) on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Tadalafil (Pah)?
The cheapest pharmacy for Tadalafil (Pah) depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Tadalafil (Pah) near you.

Tadalafil (Pah) Coupons & Prices

Tadalafil (PAH) 20MG

QUAD by MEDVi · 4-in-1 ED treatment

Tadalafil is one of the 4 meds in QUAD

Sildenafil, tadalafil, PT-141 & L-Citrulline in one sublingual dose · Works in ~15 min · Lasts up to 36 hours

See QUAD by MEDVi From $114/mo · Free online visit
QUAD by MEDVi is a compounded prescription treatment; eligibility is determined by a licensed provider after an online visit. Pricing and product details are set by MEDVi and may change. Not affiliated with, endorsed by, or equivalent to any brand-name medication or manufacturer.
Tadalafil (Pah) Tablet — prescription drug image
Prescription
Tadalafil (Pah) 20mg (10)
your area ·
QUAD by MEDVi · 4-in-1 ED treatment

Tadalafil is one of the 4 meds in QUAD

Sildenafil, tadalafil, PT-141 & L-Citrulline · Works in ~15 min · Lasts up to 36 hours

$114/mo Consult, meds & shipping included 4-in-1 formula
See QUAD by MEDVi Free online visit · No commitment
QUAD by MEDVi is a compounded prescription treatment; eligibility is determined by a licensed provider after an online visit. Pricing and product details are set by MEDVi and may change. Not affiliated with, endorsed by, or equivalent to any brand-name medication or manufacturer.

Looking for a tadalafil (PAH) coupon? The pulmonary arterial hypertension form of tadalafil — sold under the brand names Adcirca and Alyq and dosed at 40 mg once daily — is available as a lower-cost generic, but the cash price can vary widely from one pharmacy to the next. Rx.com compares tadalafil prices across more than 60,000 U.S. pharmacies so you can find today's best price with a free discount coupon. Enter your ZIP above to see the current price near you.

What is tadalafil for PAH and how does it work?

Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor. When used for pulmonary arterial hypertension (PAH, WHO Group 1), it relaxes the blood vessels in the lungs, which lowers the pressure the heart has to pump against and helps improve a person's ability to exercise. This is the same active ingredient found in Cialis, but the PAH version — brand names Adcirca and Alyq — is FDA-approved specifically for pulmonary arterial hypertension and is taken as a 40 mg dose once daily.

Because it is the same molecule as Cialis (which is separately approved for erectile dysfunction and benign prostatic hyperplasia), using PAH-labeled tadalafil is effectively the same drug at a different dose. Your prescriber decides which formulation and strength is right for your condition.

Cost of generic tadalafil (PAH) without insurance

Generic tadalafil is available, which generally makes it far more affordable than the Adcirca or Alyq brand. Even so, the cash price for the 40 mg PAH dose is not the same everywhere — pharmacies set their own prices, and the gap between the highest and lowest price in the same town can be large. That is exactly why comparing before you fill matters, especially if you are paying without insurance.

Rx.com checks the live cash price across more than 60,000 pharmacies and gives you a free coupon you can show at the counter. There is no manufacturer copay card for the generic; the savings come from the coupon price itself. Enter your ZIP above to see today's price near you and print or text yourself the coupon.

Related and alternative medications

Tadalafil belongs to the same PDE5-inhibitor class as sildenafil. For pulmonary arterial hypertension, sildenafil is sold as Revatio. If you were prescribed tadalafil for another use, you may also see it as Cialis. A different type of PAH medicine, riociguat (Adempas), works through a separate pathway and is not combined with tadalafil (see the safety note below).

Only your prescriber can decide whether an alternative is appropriate for you. Use Rx.com to compare the coupon price on whichever medication you are prescribed.

Safety and important warnings

Tadalafil has no FDA boxed warning, but there are important safety points. It should never be taken with any nitrate medication (such as nitroglycerin or isosorbide) or with the guanylate cyclase stimulator riociguat (Adempas), because the combination can cause a severe and potentially fatal drop in blood pressure. It can also add to the blood-pressure-lowering effect of alpha-blockers and other blood-pressure medicines.

Tell your prescriber about all your medications and conditions, including kidney or liver problems, cardiovascular disease, and pulmonary veno-occlusive disease. The dose may need to be lowered in mild-to-moderate kidney or liver impairment, and it should generally be avoided in severe kidney impairment. Rare but serious risks include sudden vision loss (non-arteritic anterior ischemic optic neuropathy), sudden hearing loss, and a prolonged erection lasting more than 4 hours (priapism), which needs emergency care. This information is not medical advice — always talk with your doctor or pharmacist before starting, stopping, or changing this medication.

Sources & accuracy

This Tadalafil (Pah) information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Tadalafil (Pah) on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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