ProBoost Thymic Protein A: 30-ct BoxProduct Description ProBoost Thymic Protein A: 30 pack. Our original and best selling product contains 30 single serving powder packets of ProBoost. Each packet has 4 micrograms (12 Trillion active molecules) of Thymic Protein A per serving. For over 26 years, people have been using ProBoost as their go to supplement to help support their immune system. ProBoost brand products are still the only products to feature our patented active ingredient,

Same protein in every format

Just a cleaner

and you're done

Instead of stimulating your immune system indiscriminately

35+ years of use

4mcg/serving ProBoost capsules with our low-dose

Same 4 mcg dose as the powder

Thymic Protein A has been recognized for its immune-modulating capabilities and has been called “the best single immune system supplement available

It's keeping it going

Not feeling your best a need a little (or a lot of) extra help

The original

The capsule is delayed-release