
RxLongevity · cGMP
Thymosin Alpha-1
A 28-amino-acid peptide from the thymus, involved in immune signalling.
- 01Ships only after a physician approves it
- 02Not FDA-approved · Safety information
- 03Secure checkout on our store · View ↗

- Protocol
- Thymosin Alpha-1
- Care path
- Longevity
- Strength
- 10 mg · 3 mL
- Form
- Lyophilized
- Source
- cGMP
- Dispensing
- Rx only
The process · Thymosin Alpha-1
Your first
90 days.
From consult to refill: what happens, in order, and who decides. Timing depends on your physician and your protocol.
Physician’s decision
Step 01 of 07: Consult · async $39 · sync $49
Consult a physician
Start with an async consult ($39): a physician reviews your intake and history, no appointment needed.
State rules decide what can be prescribed where you live.Which consult?
Step 02 of 07: Decision · your physician
Physician review
Your physician reviews your history and decides whether Thymosin Alpha-1 is right for you. Prescription items ship only after a physician approves them.
Much of the research is preclinical or limited. Your physician explains what is known before prescribing.
Step 03 of 07: Pharmacy · cGMP
Made to cGMP
Thymosin Alpha-1 comes from a U.S.-licensed manufacturer working under current Good Manufacturing Practice (cGMP). It is not an FDA-approved drug product.
Step 03 of 07: Pharmacy · 503A
Compounded for you
A state-licensed 503A compounding pharmacy prepares Thymosin Alpha-1 for you, under your physician’s prescription. Compounded medications are made for an individual patient and are not FDA-approved drug products.
Step 04 of 07: Shipping · to your door
Shipped to your door
Once your physician approves it, your order ships to your door. Storage and handling instructions come with your prescription.
Step 05 of 07: First dose · lyophilized
Reconstitute, then dose
The vial arrives freeze-dried, as a dry cake, and is reconstituted with bacteriostatic water before the first dose.
Syringes, swabs and bacteriostatic water are on the store as a $20 starter kit.Starter kit ↗
Step 05 of 07: First dose · liquid
Ready to measure
The liquid form arrives ready to use, in a multi-dose vial: nothing to reconstitute.
Syringes and swabs are on the store as a $20 starter kit.Starter kit ↗
Step 06 of 07: Check-in · physician’s decision
Your physician, throughout
Your physician stays with you for adjustments. Any change to your dose is your physician’s decision.
Never change a dose without talking to your physician.
Step 07 of 07: Refill · Patient Support
Your next vial
How long a vial lasts depends on the dose and schedule your physician sets.
01Overview
Thymosin alpha-1 is a 28-amino-acid peptide first isolated from the thymus, where it takes part in T-cell maturation and immune signalling.
A version called thymalfasin is approved in some countries outside the U.S.; in the U.S. it is not FDA-approved. Your physician will discuss what is known.
- Dispensed as
- Thymosin Alpha-1
- Strengths
- 10 mg · 3 mL (lyophilized)
10 mg · 5 mL (liquid) - Route
- Subcutaneous injection
- Sourcing
- Made by a U.S.-licensed cGMP manufacturer · Prepared by a state-licensed 503A compounding pharmacy
- Access
- Prescription only, after a physician consult
02How it’s taken
Subcutaneous injection. Your physician sets the dose and the schedule, and explains how to prepare and give each dose. Never change a dose without talking to your physician.
The freeze-dried vial is reconstituted with bacteriostatic water before the first dose, which keeps the compound stable until you need it. Syringes, swabs and bacteriostatic water are on the store as a $20 starter kit ↗.
The liquid form arrives ready to use: nothing to reconstitute.
Storage and handling instructions come with your prescription.
03How you get it
- Select your state. State rules decide what can be prescribed where you live.
- Consult a physician. Start with an async consult ($39) or a live consult ($49).
- Physician review. Your physician decides whether Thymosin Alpha-1 is right for you and writes the prescription.
- Shipped to your door. Once approved, your order ships. Patient Support is at +1 (888) 471-9962.
04Sourcing
Produced by a U.S.-licensed manufacturer under current Good Manufacturing Practice (cGMP). It is not an FDA-approved drug product.
A state-licensed 503A compounding pharmacy prepares the medication for you, under your physician’s prescription. Compounded medications are made for an individual patient and are not FDA-approved drug products.
05Questions
Do I need a prescription for Thymosin Alpha-1?
Yes. Thymosin Alpha-1 is prescription-only. Start with an async consult ($39) or a live consult ($49). A licensed physician reviews your history and decides whether it is right for you.
Which strengths are available?
On our store: 10 mg · 3 mL lyophilized, $150; 10 mg · 5 mL liquid, $175. Your physician decides which strength and schedule fit your protocol.
How does it arrive?
As a lyophilized (freeze-dried) cake in a sealed vial with a flip-off cap, reconstituted with bacteriostatic water before the first dose or as a ready-to-use liquid in a sealed multi-dose vial; your prescription explains how.
Who makes it?
Produced by a U.S.-licensed manufacturer under current Good Manufacturing Practice (cGMP). It is not an FDA-approved drug product. A state-licensed 503A compounding pharmacy prepares the medication for you, under your physician’s prescription. Compounded medications are made for an individual patient and are not FDA-approved drug products.
How long does a vial last?
It depends on the dose and schedule your physician sets. Patient Support can help at +1 (888) 471-9962.
06Safety
Important safety information
Thymosin alpha-1 is not FDA-approved in the U.S., and its safety and effectiveness for these uses have not been established.
Possible side effects include redness or discomfort where it is injected. Tell your physician if you have an autoimmune condition, an organ transplant or take immune-suppressing medicines. Not for use during pregnancy or breastfeeding.
Tell your physician about every condition and medicine before starting, and report any new symptom.
Compounded medications are prepared by state-licensed pharmacies for individual patients. They are not FDA-approved and have not been evaluated by the FDA for safety, effectiveness or quality. This page is general information and does not replace a consultation with a licensed physician, who decides whether a treatment is appropriate for you.





