Amounts tested in animals, not advice
What do animal thymulin dosage figures mean for you?
You'll see each amount, where researchers put it, and why none can become your dose.
What can animal thymulin amounts tell you?
A tiny amount on a study page can look like a dose for you. It isn't. No thymulin dose has been set for people.
Some rodent studies used nanograms, or billionths of a gram. Others used a few micrograms, or millionths of a gram. Researchers put thymulin into the belly, brain fluid, or under the skin. One rat study used about 100 nanograms for each kilogram of body weight per day.
Some gene studies didn't give thymulin itself. One treatment put DNA instructions into animal cells, which then made the hormone. These figures tell you only what researchers tested in animals. They aren't a schedule, advice, or a safe amount for a person.
Which thymulin peptide dosage amounts were tested?
Rodent pain tests used 0.1-1 micrograms, or millionths of a gram, in fluid around the brain, while other rodents got 1-1000 nanograms, or billionths of a gram, in the belly. A rat study used about 100 nanograms per kilogram of body weight per day under the skin [4]. That amount lowered high blood pressure in vessels carrying blood through the rats' lungs.
Another mouse study gave each animal 50 micrograms of serum thymic factor, the early name for thymulin without zinc, before a germ toxin [15]. The treatment helped protect cells in the pancreas. A separate study gave mice thymulin each day for two weeks, but its short summary didn't state the amount [6]. These animal findings can't be turned into a dose for yourself.
Have doctors set a thymulin peptide dose for people?
No thymulin dose has been set for people, although animal studies used 0.1-1 micrograms in brain fluid, 1-1000 nanograms in the belly, or about 100 nanograms per kilogram per day under the skin [4]. Each place let researchers study pain, swelling, or lung blood pressure in an animal. Gene work gave cells one set of DNA instructions instead of giving thymulin itself [5]. None of this tells you a safe or useful human dose.
How much thymulin did the animals get?
Rodent pain studies used 0.1-1 micrograms in brain fluid or 1-1000 nanograms in the belly, while one rat study used about 100 nanograms per kilogram per day under the skin [4]. Another study gave mice 50 micrograms of serum thymic factor before a germ toxin [15]. Gene studies gave one set of DNA instructions instead of thymulin itself [5][7]. These figures describe animal tests, not a dose for you.
Why was thymulin placed in different parts of the body?
Researchers put thymulin in different places to study different body changes, using the belly, brain fluid, or a shot under the skin in animal tests [5][7]. A small human hair study spread zinc-thymulin on the scalp. Belly shots let it move through the body during swelling studies [6][7]. Mouse asthma work put thymulin-making DNA in the airway to reach lung cells, but none of these methods is approved for you.
Were thymulin study shots meant for people?
The thymulin shots went to study animals, with researchers placing them in the belly, under the skin, or in fluid around the brain [7]. A small human hair study used scalp lotion instead. There isn't an approved thymulin shot for people. An animal shot tells you how that one test was done, not what is safe for you.
How long does thymulin stay in your blood?
Thymulin leaves the blood fairly fast, but researchers don't know the exact time in people [5]. Animal gene studies tried to keep thymulin present by giving cells DNA instructions to make it [5][7]. This avoided giving the hormone again and again. It doesn't prove that the DNA method is safe or useful in people.
What is known about thymulin side effects?
There is very little human safety information for thymulin as the body makes it. Thymulin isn't an FDA-approved drug or a vitamin supplement. Several older human studies tested a man-made stand-in called nonathymulin [5]. Its results can't settle the safety of thymulin itself.
Mouse studies looked for hoped-for effects, not every possible harm [6][7]. Zinc also changes whether thymulin works, so it is hard to tell which one caused an unwanted effect. Doctors don't have a full human side-effect list or an agreed dose. If your health is at stake, this page can't replace a doctor who knows you.