Quick math example
A 5 mg vial mixed with 2 mL gives 2,500 mcg/mL. A 2.5 mg dose is 1.0 mL, or 100 units on a U-100 syringe.
How the TB-500 calculation works
TB-500 is usually labeled in milligrams per vial while target amounts are often discussed in milligrams or micrograms. The calculator keeps the conversions explicit so the syringe reading is unambiguous.
After concentration is known, every dose becomes target mcg divided by mcg per mL.
- 5 mg vial = 5,000 mcg total
- 2 mL water = 2,500 mcg per mL
- 2,500 mcg target = 1.0 mL draw
Stacking and protocol tracking
Recovery protocols often pair TB-500 with BPC-157 on overlapping schedules. Tracking each compound's vial date, draw amount, and doses remaining separately reduces avoidable errors.
Sources used
Frequently asked questions
Is TB-500 approved as a medicine?+
Approval status varies by jurisdiction and use case. This page only explains calculator math and does not make treatment recommendations.
How do I calculate a BPC-157 and TB-500 stack?+
Calculate each compound separately so the per-draw volume for each is clear. PepSync's stack view keeps both schedules visible without combining the math.
What if my TB-500 vial uses more water?+
Enter your actual BAC water volume. Increasing water lowers concentration, which increases the syringe units to draw for the same target dose.