Thymosin Alpha-1 Rx
One of the few peptides in this category with substantial human clinical data, studied for immune regulation in a range of conditions.
- Immune modulation, not stimulation
- Real human clinical data
- T-cell function
- Flexible monthly plans
- US-licensed pharmacies
- Clinician-guided dosing
- Pause or cancel anytime
Starting at$139 / mo
- HSA / FSA eligible
- Ongoing, expert support
- Free, discreet shipping
- 100% online
- Does this boost my immune system?
- "Modulate" is the more accurate word. The research describes better regulation — appropriate responses — rather than blanket amplification, which is why it isn't automatically good to have more of.
- Can I take it with an autoimmune condition?
- Not without specialist input. Modulating immune function when it's already dysregulated requires someone who manages your condition to weigh in.
- How long is a cycle?
- Typically eight to twelve weeks, then a reassessment with repeat bloodwork before deciding whether to continue.
Injection-site reactions are the most common. Transient flu-like symptoms occur occasionally in the first week. Anyone with an autoimmune condition needs specialist input before starting.
Who this is not for
- Not FDA-approved in the United States
- Not appropriate with an autoimmune condition without specialist input
- Contraindicated with immunosuppressive therapy
- Not evaluated in pregnancy or breastfeeding
Regulatory status: Compounded. Read our full medical disclaimer.
Disclaimer
Prescription products require an online evaluation with a licensed medical professional who will determine if a prescription is appropriate. This product is compounded by a licensed pharmacy. The FDA has not reviewed or approved compounded products for any use for safety, efficacy, or quality. Actual product packaging may appear differently than shown.
What is Thymosin Alpha-1?
Thymosin alpha-1 is a peptide produced by the thymus, the organ responsible for T-cell maturation.
Thymic function declines steadily from adolescence onward — one of the more measurable components of immune aging.
Individual results vary. Figures shown are modelled from published literature and aggregated, self-reported member check-ins; they are illustrative and are not a guarantee of outcome. See the evidence tier for this treatment.
days to a fair assessment
90How Thymosin Alpha-1 works
Week 1
Onboarding, first dose and a check-in on tolerability. Most protocols start below the standard dose so your body has time to adjust.
30 Days
Your first real signal. We review side effects, adherence and any early changes before deciding whether to adjust anything.
3 Months
The window where most measurable change shows up. Repeat labs where the protocol calls for them, and a dose review either way.
6 Months
Trend lines rather than single readings. We compare against your baseline panel and decide whether to continue, adjust or stop.
1 Year and Beyond
Maintenance. The goal is the lowest effective dose you can hold, with twice-yearly labs keeping the protocol honest.
Our research is shaping what comes next
Most providers in this category focus on doing more. We study what happens when the goal is finding the right amount. With a fully in-house care team, longevity researchers, and 17+ protocols graded by evidence tier, we're built to support the bigger picture of your health.
Thymosin alpha-1: from bench to bedside
Annals of the New York Academy of Sciences · 2010
Thymosin alpha 1 in sepsis: a randomized controlled trial
Critical Care · 2013
Thymic involution and immunosenescence
Nature Reviews Immunology · 2021
Thymosin Alpha-1
treatment insights
Modelled response patterns are trending in the optimal range
Read our clinical trials
Immune and longevity
Our researchers are studying thymosin alpha-1 through a longevity-focused lens, exploring how lower-dose protocols may be used in long-horizon care beyond the primary indication.
Read our researchSubscribe & save
Care that starts
with you
$139/month
What's included
- Personalized, clinician-guided plan
- Flexible monthly plans
- Dispensed by a US-licensed pharmacy
- Unlimited protocol adjustments and messaging
- Ongoing support and check-ins
- Pause or cancel anytime
- Third-party potency and sterility testing
How it works
Choosing how you age starts here
- Certified1
Clinician-led
Connect with a clinician
Connect with one of our US-licensed, in-house medical providers with 199+ years of combined clinical experience to make sure treatment is right for you. 100% online. No in-person visit required.
- 2
Fast, discreet shipping
Get your discreet shipment
If approved, your treatment is compounded by a US-licensed pharmacy, third-party tested by lot, and shipped to your door in unbranded packaging — cold-chain where the formulation requires it.
- 3
Ongoing support
Adjust as you go
Message your care team whenever something changes. Dose adjustments, side-effect questions and protocol changes are included in your membership — never another appointment, never another fee.
The protocol
- Typical dose
- 1.6 mg, 2× weekly
- Route
- Subcutaneous injection
- Cycle length
- 8–12 weeks, then reassess
- Monitoring
- CBC with differential at baseline
- Shipping
- Monthly, refrigerated
A good fit if
- Frequent infections or slow recovery from them
- Immune aging as part of a longevity protocol
- You want a peptide with actual human clinical data
- You'll do the baseline bloodwork
Worth knowing
- Not FDA-approved in the United States
- Not appropriate with an autoimmune condition without specialist input
- Contraindicated with immunosuppressive therapy
- Not evaluated in pregnancy or breastfeeding
Ready when you are
Start Thymosin Alpha-1 today
Complete a ten-minute intake, get a licensed clinician's review, and find out whether this is right for you — before you pay for anything.