Buy TB 500 from Axiolabs at Best Anabolic Steroids. One lyophilised vial of a synthetic thymosin beta-4 fragment is what the pack contains, the small protein involved in actin regulation and cell movement. The powder is dissolved in bacteriostatic water before use and kept cold afterwards.
The card is deliberately blunt about the state of the evidence. In humans there is no agreed half-life, no agreed dose and no completed safety file; the numbers quoted below come from vendor protocols and from veterinary work in which an acetylated metabolite of the peptide was traced in horses. Anyone comparing this vial with a licensed medicine is comparing two different things.
Product Overview
Thymosin beta-4 occurs naturally in most mammalian cells, where it binds actin and helps cells move and repair. TB-500 is a shortened synthetic version of that protein built for the research market, and the interest around it concerns soft tissue: cell migration, blood vessel formation and the early phases of wound repair.
The pharmacokinetic picture is the weak point. Reference material states outright that no human half-life is established, and vendor documentation repeats that same wording rather than quoting a number. Detection is similar: assays in veterinary studies followed an acetylated fragment in urine and plasma of horses, but nothing equivalent has been validated for people, so no honest test window can be printed here. In sport the substance sits in the S2 class of peptide hormones and growth factors, where it is prohibited at all times.
Dosage Protocol
The only structured schedule available is the vendor protocol, which splits into a loading stretch and a maintenance stretch. Amounts are milligrams and are mixed from a lyophilised vial, so the arithmetic has to be written down before the first injection.
| Loading phase | Two injections a week at 2.0-2.5 mg each, so 4.0-5.0 mg per week, across weeks one to four |
| Maintenance phase | One shot of 2.0-2.5 mg each week after the loading stretch |
| Course length | Six to eight weeks, then a break of comparable length before repeating |
| Women | No separate female schedule exists; nothing is confirmed in the sources |
| Route | Subcutaneous or intramuscular, with bacteriostatic water as the diluent |
What one vial covers
A 5 mg vial covers roughly one week of the loading phase at 2.0-2.5 mg per injection, or about two to two and a half weeks of maintenance at the same amount once a week. Working out how many milligrams sit in each millilitre at the volume chosen, and how that translates into units on a U-100 syringe, is the step that prevents an accidental overdose of a material with no human dose-finding data.
Suggested Protocols
TB-500 is handled systematically rather than locally, which is the main practical difference between it and the other repair peptide in this catalogue. The schedule is weekly rather than daily, and the loading phase does most of the work before the maintenance stretch flattens it out.
Nothing here connects to the hormonal side of the catalogue, so there is no base, no inhibitor and no recovery drug to schedule around it. Where a peptide like this is used next to a steroid cycle, the cycle keeps its own planning: a long base such as Testaplex C 250 on its twice-weekly rhythm, estradiol control through Exeplex only when a blood result asks for it, and the recovery pair Tamoxiplex 20 plus Clomiplex 50 reserved for the weeks after the last injection.
What to Expect
- Vendor timelines only. Descriptions of easier movement and less discomfort in the first one to three weeks come from supplier material, not from controlled human studies, and should be read as such.
- Nothing measurable in a blood test. There is no marker that rises or falls with this peptide, so progress is judged from symptoms rather than from a panel.
- The full course is the unit. The protocol is written for six to eight weeks including loading, and single injections have no documented timeline at all.
- Absence of data is the headline. Human half-life, human dose and human safety are all listed as unconfirmed in the reference sheets.
- Cold chain decides quality. A mixed vial that has been warm or refrozen is a different product from the one that was shipped, and no shelf life for our specific vial is confirmed.
- Competitive sport rules it out. Growth factor and peptide hormone class, prohibited at all times, with a therapeutic exemption that is realistically unobtainable.
Side Effects and Management
After the Course and Follow-Up
There is no post-cycle therapy on this card, and that is a pharmacological statement rather than an omission. The fragment does not touch the hypothalamic-pituitary-gonadal axis, so natural testosterone production is not suppressed and no SERM has anything to restart. The routines that do matter are about handling the material correctly.
The rest of the shelf, from growth hormone products such as AxoTropin to anti-estrogens such as Arimiplex for anyone running a separate cycle, sits in the Axiolabs catalogue.
