Thymosin Beta 4 Peptide Therapy

FAQ

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• What is Thymosin Beta-4, and what is it studied for?

  Thymosin Beta-4 is a naturally occurring 43-amino acid peptide found in many cells throughout the body. It has been studied in laboratory research for its role in cell structure and movement through its interaction with actin. TB-500 is the name commonly used for a synthetic peptide fragment that corresponds to a portion of the TB-4 sequence. The two terms are often discussed together in peptide literature but are not identical molecules.

• Is Thymosin Beta-4 FDA-approved?

  No. Neither the full Thymosin Beta-4 peptide nor the distinct synthetic fragment commonly called TB-500 is FDA-approved. In July 2026, an FDA advisory committee voted to recommend allowing licensed pharmacies to compound TB-500, and that recommendation is now in the FDA's formal review process. That recommendation is not FDA approval and does not automatically apply to TB-4; discuss available prescription blend options at a free nurse practitioner consultation.

• What are the risks of Thymosin Beta-4, and who should avoid it?

  Your nurse practitioner reviews your health history, current medications and existing conditions before prescribing and will tell you if an option is not a fit. TB-500 is prohibited in tested sport by the World Anti-Doping Agency. Bring your current medication list and any tested-sport requirements to your free consultation.

• What does it cost, and what is included?

  There is no standalone Thymosin Beta-4 bottle. What we prescribe is a blend that includes TB-500, and pricing for the available blends is shown with those options. If you go ahead there is one medication review fee on top of the bottle, charged once for that review even when prescriptions go out as separate orders the same day, and it covers clinic packing and the injection walkthrough. The consultation is free.

• How do I start?

  Book a free consultation with a nurse practitioner, online or at any of our three locations. They go through your health history, your current medications and what you are trying to achieve, then tell you which of the available options, if any, is a sensible fit. Not everyone is a candidate, and if you are, they write the prescription and you pay for your bottles plus the one review fee.

• Where does my prescription come from?

  Your prescription is filled by BelieveRX, a licensed U.S. 503A compounding pharmacy, and prepared for you specifically after your consultation. We do not sell research-grade or gray-market peptides. A licensed pharmacy is not the same thing as FDA approval of the medication itself, and your nurse practitioner will be straight with you about that.

• How long does one bottle last, and how do refills work?

  That depends on what your provider prescribes, so it is not something we can put a number on here. Your nurse practitioner tells you at your review roughly how long a bottle should last for you and when it would make sense to order again. There is no subscription and no automatic refill, so you order again only when you decide to.

• Can I collect it or have it shipped?

  Both. Collect at West Hollywood, Santa Monica or Calabasas, where we pack it for you and show you how to inject it, all covered by the review fee. Or we ship anywhere in California, once we confirm your address is eligible and tell you any delivery charge before you pay.