Tadalafil 20mg Tablets | 100-Count | PDE5 Inhibitor | Cialis

QSC Tadalafil (Cialis — long-acting PDE5 inhibitor) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
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$130

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SKU: QSC-TADALAFIL-20MG-100TAB
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPSChina Warehouse

What is Tadalafil?

Tadalafil (Cialis) is a selective PDE5 inhibitor with the longest half-life in its class (~17.5hr, duration up to 36hr). Prevents cGMP degradation in smooth muscle, sustaining NO-mediated vasodilation. FDA-approved for erectile dysfunction, BPH, and pulmonary arterial hypertension (PAH/Adcirca). CAS 171596-29-5.

Research Applications

NO/cGMP Pathway

PDE5 inhibition → sustained cGMP → smooth muscle relaxation

Pulmonary Hypertension

PAH vasodilation — Adcirca indication — pulmonary vascular resistance

Long-Duration Protocol

17.5hr half-life — chronic dosing and sustained inhibition studies

Cardiac Preload/Afterload

Venodilation and arterial effects — cardiac function modelling

vs PT-141 Pairing

Peripheral PDE5 (tadalafil) + central MC4R (PT-141) — erectile physiology

Quick Specs

Form Tablet — 20mg per tablet, 100-tablet bottle
CAS Number 171596-29-5
Molecular Formula C₂₂H₁₉N₃O₄
Molecular Weight 389.4 g/mol
Compound Type PDE5 Inhibitor
Purity ≥99% by HPLC — every batch
Identity MS molecular weight confirmed — every batch
COA Janoshik-independent, publicly verifiable
Manufacture In-house synthesis — Qingdao, China
Storage Room temperature sealed | cool, dry storage
Shelf Life 24 months unopened

Certificate of Analysis (COA)

Frequently Asked Questions

How are QSC research tablets supplied?
QSC research tablets are supplied as pre-dosed oral tablets at the stated concentration. No reconstitution is required. Each tablet is compressed at uniform dose for consistent dosing in research applications.
How should research tablets be stored?
Store at room temperature (15–25°C) in a cool, dry place away from moisture, heat, and direct sunlight. Keep in the original container. Properly stored tablets remain stable for 2–3 years.
What purity are QSC research tablets and how is it verified?
QSC research tablets contain active ingredient at ≥99% HPLC purity before tableting, with MS-confirmed identity on every batch. COA is published on the product page and independently verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC’s free peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌏 Shipping: China warehouse — 7–14 day global delivery

Source: PubMed / NCBI  ·  Last 10 years  ·  Refreshed every 24 hours  ·  For research reference only — not clinical guidance.

⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION

QSC products are strictly for in vitro and in vivo laboratory research. Not intended for diagnostic, therapeutic, or personal use.

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Research Use Disclaimer

All QSC products are strictly for laboratory, scientific, and research use only. They are not for human consumption, medical treatment, diagnosis, or disease prevention.

By purchasing or using QSC products, you confirm:

  • You are a qualified researcher or acting under the supervision of one.
  • Products will only be used for legitimate research purposes.
  • Products are not evaluated by the FDA or any regulatory authority for human use.
  • You assume all responsibility for legal compliance, proper handling, and storage.
  • You meet the legal age requirement in your jurisdiction.
No Warranty: Products are sold “as is,” with no express or implied warranties regarding efficacy, safety, or suitability. Results in research may vary. QSC is not responsible for outcomes, interpretations, or conclusions drawn from any studies conducted using these products.
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General Safety & Handling

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Not for Human Use

These compounds are for research only. Any off-label, personal, or clinical use is strictly outside the intended scope of supply.

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PPE Required

Always use appropriate personal protective equipment (gloves, lab coat, eye protection) when handling peptides.

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Storage Compliance

Follow product-specific storage conditions to maintain identity, purity, and biological activity.

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Proper Disposal

Dispose of all materials in accordance with institutional biosafety, chemical waste, and hazardous material protocols.

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Verify Quality

Janoshik COAs are available on every product page. Verify batch identity (MS confirmed) and purity (≥99% HPLC) before use.

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Peptide Storage Guidelines

🌑 Light-protected💧 Low moisture🌡️ Stable temperature🔬 Sterile handling

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