This red, capsule pill imprinted with TEVA 5507 is a fluoxetine 50 MG (as fluoxetine hydrochloride) / olanzapine 12 MG Oral Capsule, per the NIH.
Olanzapine and Fluoxetine is a human prescription drug. The active pharmaceutical ingredient is fluoxetine hydrochloride; olanzapine and is classified as, "Atypical Antipsychotic [EPC], Serotonin Reuptake Inhibitor [EPC], Serotonin Uptake Inhibitors [MoA]."
This pill is made by Teva Pharmaceuticals USA Inc.
There are 2 other red pills that with a similar imprint: "TEVA 5507". They may be a different dosage of the same drug or a different drug entirely.