Vardenafil 35mg Tablets | 200-Count | PDE5 Inhibitor

QSC Vardenafil (Levitra (PDE5 inhibitor)) — ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.

✓ 99%+ Purity ✓ COA Available
✓ Free Shipping on All Orders ✓ Ships from Domestic Warehouses (🇺🇸) + China (🇨🇳)

$250

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SKU: QSC-VARDENAFIL-35MG-200TAB
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QSC RESEARCH GRADE

≥99% HPLC PurityMS ConfirmedJanoshik COAIn-House SPPS1-Region Domestic Shipping

What is Vardenafil?

Vardenafil (Levitra — high-selectivity PDE5 inhibitor) is a Small molecule C₂₃H₃₂N₆O₄S·HCl, MW 579.1. Potent PDE5 inhibitor with higher selectivity for PDE5 over PDE6 (colour vision interference) compared to sildenafil. Prevents cGMP degradation in vascular smooth muscle via NO pathway. Short half-life (~4–5hr). Hepatically metabolised (CYP3A4 — relevant for drug interaction research).

Research Applications

High PDE5/PDE6 Selectivity

Lower visual side effects vs sildenafil — selectivity research

cGMP/NO Pathway

Smooth muscle vasodilation, blood flow, endothelial interaction

Short-Acting PK

4–5hr half-life — rapid onset and clearance pharmacokinetics

CYP3A4 Interaction

Drug-drug interaction research at CYP3A4 metabolic site

vs Tadalafil

Short-acting (vardenafil) vs long-acting (tadalafil) PDE5 comparison

Quick Specs

Form Lyophilized powder
Purity ≥99% by HPLC — every batch
CAS Number 224785-91-5
Identity MS molecular weight confirmed — every batch
Peptide Type Phosphodiesterase Type 5 (PDE5) Inhibitor
COA Janoshik-independent, publicly verifiable
Manufacture In-house Fmoc SPPS — Qingdao, China
Storage -20°C sealed | 2–8°C reconstituted (2–4 weeks)
Shelf Life As indicated by manufacturer

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.
🌍 Domestic shipping: 🇺🇸 USA
🧬 PubMed Research — 35mg
Search PubMed ↗

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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