Pill with imprint L 591 is Pink, Capsule-shape and has been identified as Azithromycin Dihydrate 500 mg. It is supplied by Alembic Pharmaceuticals Limited.

Azithromycin is used in the treatment of Bacterial Infection; Babesiosis; Bacterial Endocarditis Prevention; Bartonellosis; Typhoid Fever and belongs to the drug class macrolides. There is no proven risk in humans during pregnancy. Azithromycin 500 mg is not a controlled substance under the Controlled Substances Act (CSA).