The Companion Animal Multivitamins and Supplements ecosystem spans upstream raw‑material sourcing, midstream formulation and manufacturing, and downstream distribution to veterinary practices and pet‑owner channels. Upstream participants deliver pharmaceutical‑grade vitamins, minerals, and functional botanicals that must satisfy feed‑additive regulations. Midstream actors—contract manufacturers, technology providers, and regulatory consultants—transform inputs into stable, palatable dosage forms while ensuring compliance with safety standards. Downstream, distributors, specialty retailers, and e‑commerce platforms convey finished products to end users, where veterinarians and pet owners evaluate efficacy, safety, and convenience. Value is created through the integration of compliant ingredients, scalable production technology, and channel‑specific positioning, and captured via brand premiums, repeat‑purchase contracts, and veterinary endorsements.