Macrosyn Inj
Call to order(859) 281-9511General Drug Information and Indications
Cloprostenol (synthetic prostaglandin) for estrus synchronization and luteolysis in mares and cattle.
Synthetic prostaglandin F2α analogue (cloprostenol sodium). Mechanism: binds FP prostaglandin receptors on corpus luteum → luteolysis and progesterone decline; potent uterine smooth muscle contractor. More potent and longer-acting than natural PGF2α. Used for synchronization, luteolysis, and abortion in mares and cattle. IM injection.
Key information
Sodium hyaluronate IV for horses. Refrigerate. IV or intra-articular use. Strict aseptic technique. Single-use.
How to Give this Medication
IM injection (horses and cattle): administer deep IM. NEVER administer IV. Wear chemical-resistant nitrile gloves. Observe horses for 60 min post-injection for adverse reactions. Store at room temperature; protect from light.
If a dose is missed
This medication is administered by a veterinarian or veterinary staff in a clinical setting. Missed doses are managed by your veterinary team — contact your veterinarian to reschedule.
Side Effects
GI: abdominal cramping, diarrhea. Sweating, restlessness, tachycardia (horses — transient within 1 hr). Abortion (any pregnant animal). Do not administer IV. Human contact hazard (reproductive/cardiovascular effects — use gloves).
Precautions
For animals
See cloprostenol. Avoid in pregnant animals. Do not administer IV. Monitor for adverse reactions 1 hr post-dose. IM/SQ only.
For people handling this medication
SERIOUS HUMAN HAZARD: Cloprostenol is readily absorbed through skin and causes serious reproductive harm. Pregnant women and women of childbearing age must NOT handle — can cause abortion or premature labor. Wear chemical-resistant (nitrile) gloves and protective clothing. If skin contact occurs, wash immediately. If eye contact occurs, flush for 15+ minutes and seek medical attention. Keep out of reach of children.
Overdose
Contact your veterinarian. HA IV/IA product — overdose managed by veterinary staff.
Macrosyn Inj dosage forms
| Product | Strength | Form | Size | Type |
|---|---|---|---|---|
| MACROSYN INJ - 100MG | 100 MG | Injectable | 1 | Commercial |
Sources
This information is provided for educational purposes and is not a substitute for advice from your veterinarian. Source: Merck Veterinary Manual – Systemic Pharmacotherapeutics of the Reproductive System (https://www.merckvetmanual.com/pharmacology/systemic-pharmacotherapeutics-of-the-reproductive-system/overview-of-systemic-pharmacotherapeutics-of-the-reproductive-system-in-animals); Plumb's Veterinary Drug Handbook (Plumb, D.C., app.plumbs.com)