Oxytocin is a hormone released by the posterior pituitary gland. It has stimulant effects on the smooth muscle of the uterus and mammary gland, which is both selective and potent. In domestic animals the uterine stimulation caused by the release of oxytocin facilitates the ascent of spermatozoa. In the mammary gland contraction of smooth muscle of the myoepithelium forces milk from the alveolar channels into the larger sinuses (milk let down) where it is available for sucking.
SYNTOCIN causes peristaltic waves of contraction in the uterus, provided that the uterus has been suitably primed by hormones. Works only during primary, secondary and tertiary labour and for about 2 days thereafter. Causes milk let down within 15 minutes of subcutaneous injection. Best given intravenously where prompt assistance in giving birth is required, otherwise action occurs 15 minutes after subcutaneous injection and is weaker.
For stimulation of uterine contractions and as an aid in the control of minor post partum haemorrhage and the removal of retained placenta.
Directions for use
Administer by either s.c., i.v., or i.m.
Horses & Cattle: 1 - 4 mL
Sheep & Pigs: 0.2 - 1mL
Dogs & Cats: 0.2 - 1mL
Dystocia due to abnormal presentation of the foetus prior to correction being accomplished.
Store below 25ºC (air conditioning). Protect from light.