San Diego's oldest continuously operating compounding pharmacy, Alvarado Compounding & Retail Pharmacy in Allied Gardens, has filled custom prescriptions from 5555 Reservoir Dr, Suite 114, San Diego, CA 92120 since its original compounding license was established in 1984. The business identifies as women-owned and pharmacist-owned, and holds PCAA accreditation from the Pharmacy Compounding Accreditation Board, a credential requiring on-site inspections of sterile and non-sterile compounding procedures, ingredient sourcing documentation, and potency-testing protocols. Compounding specialties include bioidentical hormone replacement therapy, dermatological preparations that pair with treatment plans from dermatology practices such as Dermatology & Laser Center of San Diego on the Grantville side of the 92120 ZIP, and veterinary compounding for pet medications requiring custom dosing, flavoring, or transdermal delivery. Pain management compounds, dental compounding for custom topical anesthetics, and weight-management formulations round out the non-retail dispensing side of the pharmacy. Same-day turnaround is standard for most non-sterile compound orders placed before midday. The retail counter handles conventional prescriptions, vitamin and supplement inventory, over-the-counter medications, and point-of-care testing for COVID-19, influenza, and strep throat. Vaccine administration covers routine CDC-recommended immunizations as well as travel and specialty vaccines. The Reservoir Drive address sits on the Alvarado Hospital campus, less than a mile from Kaiser Permanente Zion Medical Center on Zion Avenue in Allied Gardens, positioning the pharmacy to process prescriptions from both hospital systems. Free parking fronts the suite entrance, and the 115 and 14 bus lines stop within a five-minute walk.