CIDR (Progesterone Intravaginal Insert) for Cattle
CIDR (Progesterone Intravaginal Insert) is used in cattle for Estrus synchronization. Routes documented in cattle: Intravaginal. ExoticRx tracks CIDR (Progesterone Intravaginal Insert) dosing for cattle from primary veterinary literature; sign in to view the full rule set. Verify against current literature before clinical use.
Trade names: CIDR, Eazi-Breed CIDR
Dose rules — sign in to view
Cited dose rules for CIDR (Progesterone Intravaginal Insert) in cattle 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
Controlled internal drug release device containing progesterone. Provides sustained progesterone release to suppress estrus and ovulation, used in estrus synchronization protocols.
Side effects & warnings
Intravaginal insert for cattle (also used extra-label in sheep and goats). Inserted for 5-7 days as part of synchronization protocol. May cause vaginitis. Handle with gloves. No withdrawal period.
Species-specific contraindications and adverse-reaction reports for cattle may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? CIDR (Progesterone Intravaginal Insert) pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cattle — 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.