This red, capsule pill imprinted with LANNETT 1315 is a Rifampin 300 MG Oral Capsule, per the NIH.
Rifampin is a human prescription drug. The active pharmaceutical ingredient is rifampin and is classified as, "Rifamycin Antibacterial [EPC], Rifamycins [Chemical/Ingredient]."
This pill is made by a total of 4 firms: (1) Lannett Company, Inc., (2) American Health Packaging, (3) Rebel Distributors Corp, and (4) Physicians Total Care, Inc.
There is 1 other red pill that with a similar imprint: "LANNETT 1315". They may be a different dosage of the same drug or a different drug entirely.