Frequently Asked Questions

  • Once your order is placed and payment confirmed, you will receive a confirmation email with a tracking number. Check your inbox including spam and promotions folders. Click the tracking link to monitor your shipment. For questions, contact us at contact@4ld.com.

  • Check back monthly to our site. Every month we offer special deals and discounts on select products.

  • We recommend using a physical address for reliable delivery. Contact us at contact@4ld.com with any specific delivery questions.

  • Due to the nature of these research materials, all sales are final and we are unable to modify or cancel orders once placed. Please review your order carefully before completing checkout.

  • Research peptides are synthesized amino acid sequences used exclusively for in-vitro laboratory study. They have no approved medical or therapeutic application. All 4LD products are designed solely for scientific research, not for human or animal consumption.

  • 4LD peptides are lyophilized for long-term stability. Store in a cool, dry place away from direct light. Once reconstituted with bacteriostatic water, refrigerate and use within the timeframe specified in your research protocol.

  • We offer 100% secure checkout options including ACH/Direct Bank Transfer, Wire Transfer, Zelle, and cryptocurrency.

  • Discreet delivery in 3–5 business days to any US address.

Need answers? Contact us.