Virginiamycin (Feed Additive) for Swine
Virginiamycin (Feed Additive) is used in swine for acidosis prevention, feed efficiency, Growth promotion, Liver abscess prevention. Routes documented in swine: PO. ExoticRx tracks Virginiamycin (Feed Additive) dosing for swine from primary veterinary literature; sign in to view the full rule set. Verify against current literature before clinical use.
Trade names: V-Max, Stafac
Dose rules — sign in to view
Cited dose rules for Virginiamycin (Feed Additive) in swine are available with a free ExoticRx account. Each row carries the route, dose range, frequency, indication, evidence level, and primary-source citation.
Mechanism of action
Streptogramin antibiotic that inhibits bacterial protein synthesis. Consists of two synergistic components (virginiamycin M1 and S1) that bind to the 50S ribosomal subunit.
Side effects & warnings
Feed additive use only. Used for growth promotion and prevention of liver abscesses in feedlot cattle. Cross-resistance with quinupristin-dalfopristin has raised public health concerns.
Species-specific contraindications and adverse-reaction reports for swine may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? Virginiamycin (Feed Additive) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in swine — the rules above are the citations specific to this species, not generic recommendations.
Sourced from primary literature; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.