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Same Product, New Packaging. Orders may arrive with the previous label during this transition period. Product formulation and quality remain unchanged.

Sildenafil, 50mg – 60 Capsules

Original price was: $85.95.Current price is: $59.95.

Sildenafil is a selective phosphodiesterase type 5 (PDE5) inhibitor studied for its competitive blockade of cGMP hydrolysis in smooth muscle cell models. By inhibiting PDE5-mediated cGMP degradation, research has examined its downstream effects on PKG activation, myosin light chain phosphorylation, and smooth muscle tone regulation in vascular and pulmonary cell models. A well-characterised reference compound in PDE enzyme pharmacology and cyclic nucleotide signalling research — pharmacist-formulated and independently third-party tested. COA available.

844 in stock

Properties ↴

  • Chemical Formula: C22H30N6O4S
  • Molecular Mass: 474.58
  • Other Names: UK-92,480
  • CAS Number: 139755-83-2
  • PubChem: 5212
  • Total Active Ingredient: 3,000mg (50mg × 60 capsules)
  • Shelf Life: 36 months
  • Storage: Store in a cool, dry place away from direct light

Product Quality ↴

Every NextChems compound is independently third-party tested on both raw powders and finished products — not selected batches, but every batch. We don’t assume quality. We verify it.

If you choose to have any product independently evaluated at an HPLC-licensed testing facility and the results are unsatisfactory, we provide full reimbursement including:

  • The HPLC analysis fee (up to $100)
  • The full cost of your order, including shipping charges

COA available on every product page. Pharmacist-formulated. No toxic solvents. No fillers. 99%+ purity standard across our entire catalogue.

Shipping ↴

United States (Same-Day Shipping) Orders placed before our daily cut-off time ship the same business day. Same-day shipping is available for US domestic orders only. Estimated delivery: 3–7 business days. Free shipping on US orders over $100.

International We ship to the following regions: USA, Canada, Europe, and South Asia (Afghanistan, Bangladesh, Bhutan, India, Maldives, Nepal, Pakistan, Sri Lanka), and the Middle East (Egypt, Bahrain, Cyprus, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, UAE, Yemen, Turkey). Estimated delivery: approximately 2 weeks. Free international shipping on orders over $300. Express options available at checkout.

Customs & Seized Parcels It is the buyer’s responsibility to verify local import regulations before ordering. In the event of a confiscated international parcel, we offer a 30–50% discount on a subsequent order. We do not process refunds for seized shipments. 100% international delivery cannot be guaranteed.

Returns Unopened products in original condition may be returned within 7 business days of delivery (SARMs, PCTs, and Male Enhancement Pills only). Peptides cannot be returned due to temperature and light sensitivity. A 15% restocking fee applies. Return shipping is at the customer’s cost.

For full details, see our Shipping Policy and Shipping FAQ.

Disclaimer

All compounds are for research use only. Not intended for human consumption. NextChems complies with all applicable regulations. Customers are responsible for ensuring compliance with local laws prior to ordering.

Research-Grade Quality. Third-Party Tested.

  • Purity Verified
  • 100% Satisfaction Guarantee
  • Third-Party Lab Tested
  • USA Made & Owned
  • Same-Day Shipping