— Pricing Guide · 2026
How Much Does Thymosin Alpha-1 Cost?
Thymosin Alpha-1 is a naturally occurring thymic peptide that regulates T-cell function. Its brand-name form (Zadaxin) is approved in over 30 countries; compounded thymosin alpha-1 is prescribed in the US for immune-support protocols. At Pepti, Thymosin Alpha-1 is $249 per monthly fill, all-in: the compounded medication from an FDA-registered US pharmacy, physician review and ongoing care, shipping, and unlimited messaging. There is no membership fee, no consult fee, and no visit fee on top. It is available as a standard vial for $249 or as a pre-filled pepti Pen for $339; the injector pen itself is included free with your first pen order. Thymosin alpha-1 is a longer, more expensive peptide to synthesize than most recovery peptides.
Thymosin Alpha-1
Multi-dose vial with sterile syringes and prep pads. One vial is your monthly supply.
— Insurance
Paying for Thymosin Alpha-1.
Compounded Thymosin Alpha-1 is a cash-pay prescription and is not covered by insurance or Medicare. HSA and FSA funds can usually be applied.
— Common questions
Thymosin Alpha-1 pricing,
answered.
Thymosin Alpha-1 costs $249 per month at Pepti as a vial, or $339 as a pre-filled pepti Pen. That price is all-in — it includes the compounded medication, the licensed physician who reviews your assessment and manages your care, shipping to your door, and unlimited messaging with your care team. Refills are the same price each month; there is no separate membership, consult, or visit fee.
The compounded Thymosin Alpha-1 from an FDA-registered 503A pharmacy, the vial with sterile syringes and alcohol prep pads, cold-chain shipping, the physician review of your assessment, ongoing physician care and dose adjustments, and unlimited messaging. If the physician does not approve you, the medication charge is refunded.
Yes. Thymosin Alpha-1 is prescription-only. At Pepti you complete a free online assessment, a licensed US physician reviews it, and if it is appropriate for you the prescription is sent to a partner pharmacy that compounds it and ships it to you. Compounded Thymosin Alpha-1 is not FDA-approved; it is prepared to a physician's prescription by a state-licensed, FDA-registered pharmacy.
No. Compounded Thymosin Alpha-1 is a cash-pay prescription and is not covered by insurance or Medicare. Most patients can use HSA or FSA funds, since it is a physician-prescribed medication. Pepti does not bill insurance, which is part of why there are no consult or visit fees.
Research-use-only peptides are sold without a prescription, without a physician, and without a pharmacy. They are labeled "not for human use" for a reason: no one is verifying the identity, purity, sterility, or dose of what is in the vial. Pepti's $249 covers a licensed physician, a state-licensed FDA-registered compounding pharmacy, and independent batch testing for identity, purity, potency, sterility, and endotoxins. You are paying for the medication to be what the label says it is.
Yes. Adding a second medication to the same plan takes 5% off every item, three takes 8% off, and four or more takes 10% off — on every refill, not just the first. A two-medication plan with Thymosin Alpha-1 brings it to $237 per month.
Once per fill. One vial is your monthly supply, and a fresh one ships about every 28 days depending on the dose your physician prescribes, billed at the same $249 each time. It renews until you cancel, and you can cancel anytime from your account. There is no contract and no cancellation fee.
Most peptide clinics price Thymosin Alpha-1 as a medication fee plus an initial consult, a membership or program fee, and follow-up visit fees, and many require in-person visits. Pepti charges one monthly price of $249 that already includes the physician and shipping, with no consult, membership, or visit fees. Some clinics also dispense research-use-only peptides; Pepti dispenses only physician-prescribed, pharmacy-compounded medication.
— More questions26 more questions about Pepti, answered.
Thymosin Alpha-1 is a naturally occurring peptide that plays a critical role in immune system regulation. It enhances the function of T-cells, dendritic cells, and natural killer cells. FDA-approved in over 35 countries for hepatitis B and C, and widely used off-label for immune support in chronic infections, autoimmune conditions, and as an adjunct to cancer immunotherapy. Thymosin Alpha-1 is prescription-only at Pepti: a licensed physician reviews your assessment and, if appropriate, prescribes it to be compounded by a state-licensed, FDA-registered pharmacy.
Thymosin Alpha-1 is $249 per month at Pepti as a vial, or $339 as a pre-filled pepti Pen. That is all-in: medication, physician review and ongoing care, shipping, and messaging. No membership, consult, or visit fees, and the price is the same in every state.
Thymosin Alpha-1 is commonly prescribed for: Adults whose physician is supporting immune function; Patients with recurring infections or chronic immune stress; People who want an immune peptide with a long clinical history. Whether it is appropriate for you is decided by the reviewing physician from your history, medications, and labs where required.
Yes. Thymosin Alpha-1 is prescription-only. The free online assessment takes about five minutes, a physician licensed in your state reviews it within 24 hours, and if approved the prescription goes to the pharmacy. If not approved, the medication charge is refunded.
No. Thymosin Alpha-1 can be prescribed from the assessment alone. Bloodwork is required only for the GLP-1s and growth-hormone secretagogues, and the intake tells you if a medication on your order needs it.
Thymosin Alpha-1 is a subcutaneous injection into the abdomen or thigh with a small insulin syringe. Your kit ships with sterile syringes and alcohol prep pads, and the exact dose and schedule are printed on the pharmacy label. Dosing videos are in your account. It is also available as a pre-filled pepti Pen for $339.
One vial is your monthly supply at the dose your physician prescribes. A fresh vial ships about every 28 days, and the date moves if your physician changes your dose. Store it as the pharmacy label directs, refrigerated.
The compounded Thymosin Alpha-1 with sterile syringes and alcohol prep pads, free tracked shipping in an unbranded box with insulated packaging, the physician review, ongoing physician care and dose adjustments, and unlimited messaging.
Reported side effects of Thymosin Alpha-1 are usually mild: mild injection site reactions. The physician screens your history, medications, and allergies before prescribing, the medication-specific consent lists the known risks, and you can message your physician about anything you notice. Seek emergency care for severe symptoms.
Response varies by person, goal, and dose, and Thymosin Alpha-1 is prescribed for ongoing use rather than a short trial. Your physician sets expectations at approval, tracks how you respond through your account, and adjusts the dose without an appointment.
Yes. Request it from your account or the app; your physician approves or declines. If approved you pay for the additional medication at the pharmacy's cost and the new dose applies to your next shipment.
Yes. Add Thymosin Alpha-1 to a plan with another treatment and every medication is 5% off, three are 8% off, and four or more are 10% off, on every refill. The physician reviews the combination and can adjust it.
No. Compounded Thymosin Alpha-1 is not FDA-approved. It is prepared to your physician's prescription by a state-licensed, FDA-registered 503A pharmacy and every batch is independently tested before release.
Yes, when prescribed by a licensed physician and dispensed by a licensed pharmacy, which is how Pepti provides it in every state it serves. Research-use-only Thymosin Alpha-1 sold without a prescription is labeled not for human use and is a different product.
Thymosin Alpha-1 is a 28-amino-acid peptide produced by the thymus gland. At Pepti it is prescribed to support boosts immune function, supports t-cell activity, used for chronic infections, anti-inflammatory, enhances vaccine response. Individual response varies, and your physician sets expectations at approval.
Thymosin Alpha-1 is a 28-amino-acid peptide produced by the thymus gland. It enhances T-cell maturation, dendritic cell function, and NK cell activity. Used in 35+ countries for immune modulation. Compounded Thymosin Alpha-1 is not FDA-approved; it is prescribed off-label by a licensed physician after reviewing your assessment.
Thymosin Alpha-1 is prescribed for boosts immune function, supports t-cell activity, used for chronic infections, anti-inflammatory, enhances vaccine response. It is commonly requested by adults whose physician is supporting immune function; patients with recurring infections or chronic immune stress; people who want an immune peptide with a long clinical history. Whether it is appropriate for you is the reviewing physician's decision.
Thymosin Alpha-1 is studied for boosts immune function, supports t-cell activity, used for chronic infections, anti-inflammatory, enhances vaccine response. Those are the goals it is prescribed to support at Pepti; results vary by person, dose, and consistency, and no outcome is guaranteed. Your physician tracks how you respond through your account.
Thymosin Alpha-1 has substantial human use: as thymalfasin (Zadaxin) it is approved in over 30 countries for chronic hepatitis B and C and as an immune adjuvant, and randomized trials have studied it in severe infections and sepsis with signals of benefit in immune-compromised patients. It is not FDA-approved in the US, where it is available through compounding pathways under physician direction. References are listed on this page.
Thymosin Alpha-1 is generally not prescribed with: active cancer or history of cancer (unless approved by oncologist); pregnancy or breastfeeding; severe kidney or liver disease; known allergy to the peptide or excipients; active autoimmune disease (use with physician guidance). The physician screens for these in your intake, and anything that rules Thymosin Alpha-1 out means it is not prescribed and is refunded.
At Pepti. Complete the free assessment, a physician licensed in your state reviews it within 24 hours, and if appropriate Thymosin Alpha-1 is compounded by a state-licensed, FDA-registered pharmacy and shipped free to your door for $249 per month, all-in. Not prescribed means refunded.
Injectable vial: 5 mL at 5 mg/mL, containing 25 mg Thymosin α-1. Pepti Pen cartridge: 3 mL cartridge (300 units) at 5 mg/mL, containing 15 mg Thymosin α-1. One vial is your monthly supply at the prescribed dose, and a fresh one ships about every 28 days.
Yes. Thymosin Alpha-1 is available as a pre-filled pepti Pen cartridge for $339 per month, versus $249 as a vial. Same medication, same pharmacy; the reusable injector is free with your first pen order. Choose the format in the cart or ask your physician.
$249 per month covers the compounded Thymosin Alpha-1, the physician review, ongoing physician care including dose adjustments and refill review, unlimited messaging, and free tracked shipping. There is no membership, consult, visit, or refill fee; the only separate charges are optional at-home lab panels and a physician-approved dose increase billed at pharmacy cost.
Yes. Thymosin Alpha-1 is on Pepti's live catalog, which lists only treatments a partner pharmacy can compound and ship today. If a physician prescribes it, it ships; if it ever cannot be dispensed, the charge is refunded.
Thymosin Alpha-1 ships to all 50 states and Washington, D.C, free and tracked, in insulated unbranded packaging. Eligibility is confirmed during the assessment from your shipping address.
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Free intake review by a licensed physician. Medication refunded if not approved.
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