WHAT EACH STUDY GAVE
TB-500 Dosage in Studies Isn't a Plan for You
Researchers gave these amounts to animals or healthy Phase 1 adults. The intact protein was used most often. None sets a human plan for the short chain.
What TB-500 dosage figures belong to animal studies
The TB-500 dosage numbers don't come from human tests of the seven-part chain. Most belong to full thymosin beta-4. Rodent heart and stroke work used about 6–12 milligrams for every kilogram the animal weighed. That means a larger animal got more.
One rat stroke study gave 2, 12, and 18 milligrams per kilogram into the belly [8]. The authors estimated that 3.75 milligrams for every kilogram might bring the largest change. No rat group got that exact amount. One mouse study used 150 micrograms twice each week for six months.
Cells can react to far smaller amounts in a dish. A picogram is a trillionth of a gram, and about 10 picograms made skin cells move [7]. A very small amount of thymosin beta-4 also woke cells near hair roots [5]. These dish amounts are not directions for you.
The rat stroke result is blunt: groups at 2 and 12 milligrams per kilogram improved. The group at 18 milligrams per kilogram didn't [8]. More wasn't better. A rat test of thymosin beta-4 can't set a human plan.
What the Phase 1 human study actually gave
The only human amount study used lab-made full thymosin beta-4. Some adults got a placebo, an inactive treatment, for comparison. In Phase 1, researchers used 42, 140, 420, and 1260 mg through a vein [10].
The study started with one amount and then gave daily amounts for 14 days. It enrolled 40 healthy adults in four groups of ten. No serious harm forced researchers to stop or lower the top amount [10]. At higher amounts, it took longer for half the protein to leave the blood.
Those amounts describe the study. They don't guide your care. Researchers tested the full protein, not TB-500 [10]. No human comparison trial supports the plans discussed in sports groups.
What each study did with the tested substance
Rodent studies often put the substance into the belly [8]. Heart studies sometimes used a vein. The human Phase 1 study also put full thymosin beta-4 into a vein [10].
Skin-wound researchers spread the whole protein over the wound. Dry-eye work used drops of thymosin beta-4 called RGN-259 [7][10]. Personal reports mention shots under skin and into muscle. Those reports aren't controlled human tests of benefit.
Research TB-500 is often sold as a dry powder. Sellers may say to mix it with treated or sterile water and keep it cold. That claim doesn't prove the vial is clean or holds the right chain.
Heat, repeated freezing, and the normal breakdown of protein can harm the contents. A vial may hold an unclean mix or the wrong chain. You can't read safety from its label alone.
What human studies haven't measured about TB-500 half-life
No human study has measured the half-life of TB-500, meaning how long the short chain stays in your blood [10]. The missing answer isn't a minor gap.
The only human work on this question used full thymosin beta-4. In that Phase 1 study, the half-life grew as the amount rose [10]. That doesn't give TB-500 a human half-life.
Lab tests found TB-500 and the pieces left after it broke down in horse urine and blood [1]. Those tests were made to catch banned use, not guide care. Any single human number is therefore guesswork.