TB-500 Injection

TB-500 is a lab-made fragment of thymosin beta-4, a protein found in nearly every cell in your body that helps cells move to where repair is needed. The full protein has been studied in human trials for heart repair and corneal wound healing. At GobyMeds, TB-500 is prescribed as a compounded subcutaneous injection prepared by a licensed U.S. pharmacy. It is not FDA-approved.

Patients most often use TB-500 for recovery from muscle, tendon, and ligament injuries, for stubborn joint inflammation, and for general recovery when training hard. Thymosin beta-4 has also been studied for wound healing, which is the indication the FDA advisory committee reviewed in 2026, and for hair and skin. Human evidence is strongest for the full protein in heart and eye research; most other uses rest on animal data.

TB-500 is usually taken in two phases: a loading phase of about 2 to 2.5 mg twice a week for four to six weeks, then a maintenance dose of around 2 mg once a week or every other week. It arrives as a powder you mix with the included water and inject under the skin with an insulin-type syringe. Your provider sets your dose; this is a typical pattern, not a prescription.

Think of BPC-157 as the local repair signal (blood flow, gut lining, the specific tendon that hurts) and TB-500 as the systemic one (it travels through the body and recruits repair cells wherever they are needed). Many providers prescribe both for musculoskeletal injuries. If your main concern is gut-related, BPC-157 alone is the usual starting point. Your provider will recommend one or both based on your goals.

A typical course runs 8 to 12 weeks: four to six weeks of loading followed by four to eight weeks of maintenance. Many people report improved mobility and less soreness during the loading phase and continued gains through maintenance. Your provider reviews progress at follow-ups and decides whether to extend, pause, or repeat.

Side effects are typically mild: a temporary flush, a brief feeling of tiredness after a dose, headache, or redness at the injection site. In clinical trials of thymosin beta-4 no serious adverse events were attributed to the drug. Because it promotes cell migration and blood-vessel growth, it is not prescribed to people with active cancer. Compounded TB-500 is not FDA-approved.

Yes. TB-500 has been on the World Anti-Doping Agency's prohibited list since 2012. Drug-tested athletes should not use it; tell your provider if you compete.

Peptides are short chains of amino acids, the same building blocks that make up proteins. Your body already makes thousands of them to carry signals between cells: to start repair after an injury, to release growth hormone during sleep, to calm inflammation, or to tell your mitochondria to make more energy. Peptide therapy uses lab-made copies or fragments of those signals, prescribed at a specific dose, to support a process your body already knows how to run. Semaglutide and tirzepatide are peptides too, which is why GobyMeds already has years of experience prescribing and shipping them.

Compounded peptides are not FDA-approved, and no compounded medication is. In July 2026 the FDA's Pharmacy Compounding Advisory Committee voted to recommend adding BPC-157, KPV, TB-500, MOTS-c, Semax, and Epitalon to the list of substances that licensed 503A pharmacies may compound, and in October 2026 HHS published an interim enforcement-discretion policy covering those six peptides while the FDA completes formal rulemaking. GobyMeds offers a peptide only when a licensed U.S. pharmacy can lawfully compound it for your prescription under that policy and your state's rules. Compounded drugs are not evaluated by the FDA for safety, effectiveness, or quality.

Yes. Every peptide at GobyMeds is prescription-only. You complete a short online visit, a licensed U.S. provider reviews your history and goals, usually within one business day, and prescribes the peptide only if it is appropriate for you. The pharmacy then compounds it for your prescription and ships it to your door. If a provider decides treatment isn't right for you, you receive a full refund.

Websites selling "research use only" peptides ship unregulated powders with no prescription, no provider, no sterility testing you can verify, and no one to call when something feels off. GobyMeds is LegitScript-certified: a licensed provider evaluates you first, a licensed U.S. compounding pharmacy prepares your medication to a prescription, and your care team follows up with you throughout. You also get transparent pricing, a supply kit with instructions, and free shipping, with no membership fee.

Most peptides are broken down in the stomach, so the most reliable route is a small injection under the skin with a tiny insulin-type syringe, the same kind used for GLP-1 weight-loss medication. The needle is very fine, the volume is small, and most people say it is easier than expected after the first time. Your kit includes syringes, alcohol swabs, and step-by-step instructions, and your care team can walk you through the first dose. Semax is the exception: it is a nasal spray.

Often, yes. Peptides are frequently prescribed alongside each other (BPC-157 with TB-500 for recovery, for example) and alongside GLP-1 medication, NAD+, sermorelin, or testosterone therapy. Tell your provider about everything you take, including supplements, and they will coordinate the plan and the timing. Your provider will work with you to adjust your medication for your goals.

No lab work is required to start. Your provider reviews your health history during the online visit and may ask for recent results if something in your history warrants it. For a few peptides your provider may suggest baseline bloodwork so progress can be measured, for example fasting glucose or inflammatory markers; that is optional and you can use your own doctor's results.

Your medication ships free from the pharmacy in insulated, cold-chain packaging in as little as 3 days after provider approval; most orders arrive within two to five business days. Injectable peptides arrive as a sterile vial, either ready to use or as a powder with the water needed to mix it, and should be kept in the refrigerator. Nasal sprays are stored according to the label. Full storage and mixing instructions are in your kit and in the patient portal.

Each peptide page shows its plan prices up front. The price you see is the price you pay: it includes the online visit, provider follow-ups, the medication, your supply kit, and shipping. There is no membership fee, no insurance requirement, and no auto-renewal, and you are not charged until your medication ships.

The peptides GobyMeds offers are copies or fragments of molecules your body already makes, and most people experience few side effects. The most common are mild and temporary: redness or a small bump at the injection site, brief flushing, headache, or nausea. Human research on most peptides is still limited, which is why a provider screens your history first and why we are candid about what the evidence does and does not show. Compounded peptides are not FDA-approved. Report side effects to your care team and to the FDA at 1-800-FDA-1088.

If a GobyMeds provider decides a prescription isn't appropriate for you, you receive a 100% refund of the medication price (lab fees, where they apply, are not refunded). Once your order has been sent to our medical partners or to the pharmacy for fulfillment we will do our best to accommodate changes or cancellations, but we can't guarantee them, and in some cases an adjustment or cancellation carries a $50 medical consultation fee.

Because of regulations covering prescription medication, we are unable to accept returned medication for a refund.

No insurance is needed and GobyMeds does not bill insurance. The price you see is the price you pay, with provider consultation and shipping included and no membership fee.

HSA and FSA cards are accepted at checkout, and we can provide a letter of medical necessity if your plan administrator asks for one.

You answer a short health questionnaire and upload a photo ID. A licensed U.S. provider reviews your history, usually within one business day, confirms the treatment is appropriate, and writes the prescription. There is no video call to schedule unless your provider or your state requires one, and unlimited follow-up messaging with your care team in the patient portal is included with every plan.

If you're not a candidate, you'll be told why and refunded in full.