PetMed Express, Inc., together with its subsidiaries, operates as a pet pharmacy in the United States. The company markets prescription and non-prescription pet medications, health products, and other supplies for dogs, cats, and horses. It offers non-prescription medications and supplies, such as flea and tick control products, bone and joint care products, vitamins, treats, nutritional supplements, hygiene products, and household pet supplies; and prescription medications, including heartworm preventatives, flea and tick preventatives, arthritis, dermatitis, thyroid, diabetes, pain medications, heart/blood pressure, and other specialty medications, as well as generic substitutes. The company also sells food, beds, crates, stairs, and other pet supplies.