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ENGLISH · EVIDENCE OVERVIEW

Tadalafil
evidence profile

Understand this molecule

What is Tadalafil?

A medicine that blocks the PDE5 enzyme, and the active ingredient in Cialis.

How does it work?

Preserves signals that relax blood-vessel smooth muscle. For erections, sexual stimulation is still required.

What is it used or studied for?

Specific products treat erectile dysfunction, enlarged-prostate symptoms or pulmonary arterial hypertension; these are distinct product contexts.

Status in the reviewed information

Authorised products were recorded in Thailand, the US and EU; indications depend on the product and country.

Original review: · not a fresh status check today

What should I keep in mind?

It does not directly increase sexual desire. Use with nitrates is contraindicated because blood pressure can fall dangerously.

Read the evidence and research in detail ↓

Phosphodiesterase type 5 (PDE5) inhibitor. This is a concise English overview, not a full translation. Read the evidence boundaries and original sources below; the detailed study and risk discussion remains available in Thai.

What do Class, Grade and Risk mean?

Tadalafil: conceptual scientific illustration for Sexual Medicine Pharmacology
VISUAL GUIDE · Tadalafil

Sexual Medicine Pharmacology

Category-level conceptual illustration, not a map of this molecule's receptor targets. It is not a treatment outcome and does not establish efficacy or safety.

QUICK ANSWER · AEO / GEO

A PDE5 inhibitor with approved products for erectile dysfunction, benign prostatic hyperplasia symptoms and pulmonary arterial hypertension in distinct product and jurisdiction contexts; these indications are not interchangeable.

01

ENTITY FACTS

What should readers identify first?

MOLECULETadalafil
PHARMACOLOGYPhosphodiesterase type 5 (PDE5) inhibitor
PRIMECORE CLASSA
EVIDENCE GRADEA
RESEARCH TOPICSexual Medicine Pharmacology
LAST REVIEWED2026-08-29

What remains unknown?

English translation is not yet verified for 3 excerpt(s). This is a language gap, not an absence of risks or uncertainty.

Read original excerpts (Thai / mixed language)
  • ไม่ใช่หลักฐานเพิ่มความต้องการทางเพศหรือ testosterone
  • การอนุมัติของ Cialis ไม่ยืนยัน tadalafil ทุกแหล่ง ทุกสูตร หรือสินค้าที่ไม่ทราบทะเบียน
  • ข้อบ่งใช้ ED/BPH ไม่สามารถใช้แทนข้อบ่งใช้ PAH หรือกลับกัน

What limits these conclusions?

Insufficient data in the current dataset

This overview does not replace the detailed adverse-event and product-specific risk discussion in the complete Thai profile or the original sources.

02

EVIDENCE BOUNDARY

What this overview does not establish

  • An evidence grade does not rank this molecule against another treatment.
  • A molecule name does not establish the identity, purity or regulatory status of a product.
  • Animal, cell or biomarker findings do not automatically establish human clinical benefit.
  • Approval in one country or indication does not transfer globally.

Where can I check the evidence?

Original sources from the same evidence record used by Compare. Read each source's population, methods, limitations and date; a citation is not product endorsement.

  1. Thai FDA — tadalafil product record
  2. Thai FDA — Cialis product information
  3. U.S. FDA — Cialis prescribing information
  4. EMA — Cialis EPAR
  5. EAU — Management of erectile dysfunction
03

FAQ · ANSWER ENGINE

Frequently asked questions

What is Tadalafil?

Tadalafil is described pharmacologically as Phosphodiesterase type 5 (PDE5) inhibitor. A PDE5 inhibitor with approved products for erectile dysfunction, benign prostatic hyperplasia symptoms and pulmonary arterial hypertension in distinct product and jurisdiction contexts; these indications are not interchangeable.

Does Tadalafil have strong evidence?

PrimeCoreBio records Evidence Grade A. This grade describes evidence strength, not comparative effectiveness or suitability for an individual.

Is Tadalafil approved everywhere?

No global conclusion should be inferred. PrimeCore Class A must be read with the exact product, country and indication on the source-rich profile.

Medical Disclaimer

Educational information only. This page does not provide diagnosis, treatment, prescribing, dosage, injection instructions or individual medical advice.

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