Prescription items are NON-RETURNABLE and NON REFUNDABLE Tylan Soluble Powder 100gm Tylan is an antibiotic food additive used in veterinary medicine to treat bacterial infections in a wide range of species, including farm animals. Veterinarians often use this powder to treat the symptoms of colitis and diarrhea in companion animals. Cautions : Adverse reactions, including shock and death may result from over-dosage in baby pigs. Warnings : Talk to your veterinarian about any other drugs your dog is taking before starting this medication. Storage : Store at or below 77??F. 012ELC02P-100 727804300302