TB-500 (Thymosin Beta-4 Fragment) 5MG

REJUVENATE offers free standard shipping on domestic orders over $150. Orders under $150 ship for a flat rate of $7.99. Our average shipping cost is more so we absorb some of the cost to keep our standard shipping as low as possible for you. 

At REJUVENATE, we stand behind the quality, integrity, and transparency of every product we provide. Your satisfaction matters to us, and we want you to order with confidence. That’s why we offer a 30-Day Money Back Guarantee on all eligible purchases. For more details, please see our Return Policy link in the policy section of our website.  Our policies are located in the footer on the bottom right of our website.  Thank you.

We work quickly to ship your order. We strive to ship your order within one to two business days of payment. Once your order has shipped, you will receive an email with further tracking information. Delivery times vary depending on your location.

We stand behind every product in our catalog. Thats why we take the extra step and have all our products independently third-party tested. What does that actually mean? We third party test the third party test. Its our standard and commitment to you. We work hard to prioritize partnerships with USA-based manufacturers, suppliers, and testing laboratories, ensuring every stage of our process, from sourcing to analysis, upholds the strictest domestic standards.

Our peptides are lyophilized (freeze-dried) to protect molecular integrity and maximize stability. The process of removing moisture under controlled conditions helps maintain product integrity, stability, and longevity during storage and shipping — preserving the precision researchers expect.  Once reconstituted for research purposes using bacteriostatic water, the peptide returns to its usable liquid form and should be refrigerated when stored.