Made for you by a licensed pharmacy
Prepared by a licensed 503A compounding pharmacy, not sold as a research chemical.
- Form
- Injection vial
- Strength
- 25 mg per vial
- Concentration
- 5 mg/mL, 5 mL
- Plans
- 1 to 12 months
RxImmune peptide
Thymosin Alpha-1
Prescribed online. Made by a licensed US pharmacy.
Thymosin alpha-1 has been tested in randomized hospital trials for sepsis, the largest a placebo-controlled trial of 1,106 adults. A licensed provider reviews your order, then a licensed 503A pharmacy prepares your 25 mg vial and ships it free.
- 25 mg vial
- 5 mg/mL, 5 mL
- Licensed 503A pharmacy
- Provider reviewed
- Free shipping
What's included
- Provider review. A licensed provider reads your health intake and decides if thymosin alpha-1 is right for you.
- Your thymosin alpha-1. A 25 mg vial at 5 mg/mL, prepared by a licensed compounding pharmacy after approval.
- Discreet shipping. Delivered to your door at no added cost.
- Refills on your terms. Auto-refill takes 10% off. Change or cancel future refills anytime.
- Free guides. Worksheets to compare products and read a study, plus a printable decision pack.
- Order support. Help with your order and delivery when you need it.
How would you like to pay?
Choose your plan
3-month plan$618.30
- $618.30 billed today
$687 - Then $618.30 every 3 months
- Change or cancel refills anytime
- Licensed provider review
- Free discreet shipping
- Cancel refills anytime
Prescription treatment requires an online medical evaluation. A provider decides whether treatment is appropriate; approval is not guaranteed.
- TodayChoose your plan and pay securely in a couple of minutes.
- Provider reviewA licensed provider reviews your order before anything ships.
- At your doorTypically 3 to 7 business days from order, in plain packaging.
Licensed providersEvery order is reviewed by a US-licensed provider.
503A pharmacyPrepared for you by a state-licensed compounding pharmacy.
Free, discreet shippingPlain packaging, no extra cost.
Cancel anytimeChange or cancel future refills whenever you like.
How much does thymosin alpha-1 cost?
$249 for one month, or $687 for three months. Auto-refill takes 10% off: $224.10 a month, or $618.30 every three months ($206.10 a month). 6- and 12-month plans cost the same per month as 3 months. Shipping is included.
Do you sell thymosin beta-4 or TB-500?
No. We sell thymosin alpha-1, a different peptide. TB-500 is a fragment of thymosin beta-4, and research on beta-4 or TB-500 does not apply to alpha-1.
What's in each vial?
25 mg of thymosin alpha-1 at 5 mg/mL in a 5 mL vial. Your provider sets your dose and schedule.
Do I need a prescription?
Yes. You complete an online health intake and a licensed provider decides whether thymosin alpha-1 is right for you. Choosing a plan does not guarantee a prescription.
Licensed 503A pharmacyPrepares every orderIndependent providersUS-licensed reviewFree discreet shippingPlain packagingCancel anytimeNo long contractsHIPAA-compliantYour data stays privateLicensed 503A pharmacyPrepares every orderIndependent providersUS-licensed reviewFree discreet shippingPlain packagingCancel anytimeNo long contractsHIPAA-compliantYour data stays private
Made for steady health
Thymosin alpha-1, without the guesswork.
Pharmacy-made thymosin alpha-1 with a clear strength on the label and a licensed provider behind every order.
- 01Licensed 503A pharmacy
- 0225 mg per vial
- 03Provider reviewed
- 04Ships free
Why us
Why Thymosin Rx
Tested in large human trials
Randomized sepsis trials, including a placebo-controlled trial of 1,106 adults, linked below with their results.
A provider in your corner
A licensed provider reviews your order before it ships, with no office visit.
Clear price, no surprises
From $206 a month with auto-refill. Free shipping, and you can cancel refills anytime.
How we compare
Thymosin alpha-1, done properly.
| Feature | Thymosin Rx | Research-use sellers | In-person clinic |
|---|---|---|---|
| Licensed provider reviews your order | × | ||
| Made by a licensed 503A pharmacy | × | Varies | |
| No office visit | × | ||
| Price shown before you pay | Varies | ||
| Free shipping | Varies | n/a |
How it works
A straightforward path to care
- 1
Choose your plan
Pick 1, 3, 6 or 12 months. Turn on auto-refill to save 10%.
- 2
Complete your health intake
Answer a private online questionnaire. A licensed provider reviews it.
- 3
Get it delivered
If prescribed, the pharmacy prepares your thymosin alpha-1 and ships it to you.
About thymosin alpha-1
Thymosin alpha-1 is a peptide tested in randomized hospital trials for sepsis. It is a different peptide from thymosin beta-4 and its fragment TB-500, so research on those does not apply to it.
- Tested in 2 randomized sepsis trials
- Largest trial: 1,106 adults at 22 centers
- Not thymosin beta-4 or TB-500
- Your vial: 25 mg at 5 mg/mL
- Tested in peopleRandomized sepsis trials, the largest in China
- Different fromThymosin beta-4 or its fragment TB-500
- Your vialPrepared by a licensed 503A pharmacy after provider review
Prepared for you by a licensed pharmacy, after a provider review.
Why people choose it
What Thymosin is studied for
Each card links to the original study, with a tag for the kind of evidence behind it.
Controlled human trial
Sepsis survival
In TESTS, a placebo-controlled trial of 1,106 adults with sepsis at 22 centers in China, thymosin alpha-1 did not clearly lower deaths at 28 days.
Read the study Controlled human trialOrgan function in sepsis
In Reset-alpha, a smaller randomized sepsis trial, the 120 people who completed it had improved organ-function (SOFA) scores with alpha-1 added to standard care.
Read the study Controlled human trialSafety in a large trial
In the same 1,106-person trial, safety outcomes did not differ significantly between thymosin alpha-1 and placebo.
Read the studyThe honest version
What the research does and doesn't show yet
Thymosin alpha-1 has been tested in randomized human trials, in hospital patients with sepsis. Here is what they found and what they leave open.
See every study we trackTESTS reported 28-day deaths of 23.4% with alpha-1 and 24.1% with placebo. The corrected hazard ratio is 0.97 (95% CI 0.76 to 1.24), with no clear survival benefit.
SourceReset-alpha is a short conference report, with less detail and fewer people than TESTS.
SourceBoth trials studied people in hospital with sepsis. Neither tested routine wellness use.
Source
Shop Thymosin Rx
Choose your peptide plan
Each product is reviewed by a licensed provider and shipped free from a licensed pharmacy.
Injection
Thymosin Alpha-1
25 mg vial · alpha-1, not beta-4 or TB-500
From $206/mo
Injection
LL-37
10 mg vial · 2 mg/mL
From $161/mo
Injection
Glutathione Injectable
2,000 mg vial · 200 mg/mL
From $80/mo
Free resources
Check the evidence yourself
Free, with no sign-up.
Research library
Read before you decide
Research Guides
Thymosin beta-4 trials: keep eye drops, wound treatment and fragments separate
A route-specific look at two early beta-4 studies, including negative primary endpoints in the dry-eye trial.
Research GuidesTESTS: the large Thymosin alpha-1 sepsis trial was negative overall
Read the randomized trial with its May 2025 correction, including corrected mortality hazard ratios and limits.
FAQ
Questions, answered
The things people ask most before starting Thymosin Alpha-1.
How much does thymosin alpha-1 cost?
$249 for one month, or $687 for three months. Auto-refill takes 10% off: $224.10 a month, or $618.30 every three months ($206.10 a month). 6- and 12-month plans cost the same per month as 3 months. Shipping is included.
Do you sell thymosin beta-4 or TB-500?
No. We sell thymosin alpha-1, a different peptide. TB-500 is a fragment of thymosin beta-4, and research on beta-4 or TB-500 does not apply to alpha-1.
What's in each vial?
25 mg of thymosin alpha-1 at 5 mg/mL in a 5 mL vial. Your provider sets your dose and schedule.
Do I need a prescription?
Yes. You complete an online health intake and a licensed provider decides whether thymosin alpha-1 is right for you. Choosing a plan does not guarantee a prescription.
How do I take it?
Thymosin alpha-1 in this plan is an injection. Your provider explains your dose, schedule and storage.
How long until I notice a difference?
The trials so far studied people in hospital with sepsis, not everyday use, so there is no timing data for you. Your provider sets your plan.
Is thymosin alpha-1 FDA approved?
No. Compounded thymosin alpha-1 is not FDA approved. Results vary from person to person.
Can I cancel?
Yes. You can change or cancel future refills anytime.
Start your thymosin alpha-1 visit today.
Plans from $206/mo. Shipping included. Cancel refills anytime.
Choose your plan