Shop › TZ - 15 MG (for research purposes only) Image 1 of 1 TZ - 15 MG (for research purposes only) $130.00 TZ (Tirzepatide) - 15mg - Research Only Peptides. Not for Human Consumption. Quantity: Add To Cart Added! TZ (Tirzepatide) - 15mg - Research Only Peptides. Not for Human Consumption.