Activate Humankind.

What is Thymic Protein A?

To put it simply, Thymic Protein A (TPA) is one of the most essential components of your immune system—helping in the formation and activation of your body’s T-cells. Fortunately, your thymus gland starts producing TPA even before you’re born. Unfortunately, however, your thymus begins shrinking after puberty, producing less Thymic Protein A as you age.

ProBoost exists to take over where your thymus gland stops—providing complete, fully-intact Thymic Protein A to keep your immune system functioning properly.

THYMIC PROTEIN A · REFINED FORMULA

New TPA Capsules

ProBoost 4mcg TPA Capsules. Our updated capsule delivers the same purified 4mcg Thymic Protein A found in our original powder packet — now in a convenient, swallowable format with a simplified, plant-based carrier.

Each capsule contains 4 micrograms of Thymic Protein A and organic rice flour, selected for its clean profile and consistent performance. The active protein remains unchanged in source, purity, and dosage.

Thymic Protein A has been called “the best single immune system supplement available,” recognized for its advanced immune-modulating capabilities. Backed by over 30 years of trusted use, ProBoost continues to deliver the original intact protein — now with a refined formulation designed for clarity and precision.

TPA in Two Minutes:

How Thymic Protein A Works

Since 2000, I have been using ProBoost Thymic Protein A with my patients with great results. It is MY GO-TO SUPPLEMENT for patients needing immune support. ProBoost helps restore proper immune function.

- DR. JAMES HOWARD, ND

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These statements have not been evaluated by the U.S. Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.