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Oxytocin

Latest prescription information about Oxytocin. Learn how to pronounce the drug’s name, its indications, dosage, how to take, when to take, when not to take, side effects, special precautions, its storage instructions and warnings if any when taken during pregnancy. Also listed are the International and Indian trade name(s) of the drug and its price list.
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Generic Name : Oxytocin
Pronunciation : ox-i-TOE-sin
Therapeutic Classification : Hormones
ICD Code : Y42
Trade Name(s): 
India- Evatocin Inj, Foetocin Inj, Genox Inj, Gynotocin Inj, Indox Amp, Labtocin Amp, Nitocin Amp, Oxybro Inj Inj, Oxystar Inj, Oxytocin Inj Inj, Oxyton-5 Inj, Pitocin Amp, Saytocin Amp, Syntocinon Inj, Buctocin 50 Tab.
International- Pitocin.
Why it is prescribed (Indications) : 
This medication is a uterine stimulant, prescribed for the initiation of uterine contractions and induction of labor in women as well as stimulation of contractions in cases where the uterus does not contract enough during labor. It is also used to help abort the fetus in cases of incomplete abortion or miscarriage, and control bleeding after childbirth. It may be used for breast engorgement.  
When it is not to be taken (Contraindications): 
This medication is contraindicated in cases where there is Cephalopelvic disproportion(CPD) (when a baby’s head or body is too large to fit through the mother’s pelvis); abnormal presentation of the fetus, excessive amniotic fluid; in women who have had multiple pregnancies, previous caesarian section or other uterine surgery; hyperactive or hypertonic uterus, uterine rupture; in cases where vaginal delivery is contraindicated (such as invasive cervical cancer, active genital herpes, prolapse of the cord, cord presentation or total placenta previa); fetal distress where delivery is not imminent; severe pre-eclamptic toxaemia (pregnancy induced high blood pressure).

Pregnancy Category :

A B C D X
Category X : Studies in animals or humans have demonstrated fetal abnormalities and/or there is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience, and the risks involved in use of the drug in pregnant women clearly outweigh potential benefits.

Dosage & When it is to be taken : 
IV- The recommended dose is 1 to 2 mU/min. Dosage should be adjusted at half an hour to hourly intervals. Max 32 mU/min.
Postpartum haemorrhage: 10 to 40 mU by infusion at a rate to control uterine atony.
Adjunct in abortion: The recommended dose is 10 to 20 mU/min, max 30 IU.
How it should be taken : 
It is usually administered as an infusion at you doctor's office, hospital, or clinic. It is also available as a nasal spray.
Warnings and Precautions : 
*Stop the drug immediately if the uterus contracts excessively or the fetus is in distress.
*Intra muscular administration is not regularly used due to unpredictable effects of this medication.
*Do not use it for prolonged periods in resistant uterine inertia, severe pre-eclampsia (hypertension), or severe CV disorders, hyper hydration.
*Monitor neonates and mother’s heart rate, maternal BP and uterine motility, fluid intake and output during treatment.
Side Effects : 
Genitourinary- Rupture of uterus, increased tone of uterine muscle.
Fetus or neonate- Jaundice; abnormal heart rhythm, slow heart beat, brain, brain damage, seizure, eye bleeding, low Apgar score. (Activity, Pulse, Grimace, Appearance, and Respiration).
Mother- Low blood pressure, fast heart rate, nasal irritation, runny nose, tears (following nasal admin); uterine bleeding, violent contractions, increased tone of uterus and spasm, nausea, vomiting.
Heart- Premature ventricular contractions, hypertensive episodes.
Gastrointestinal- Nausea and vomiting.
Metabolic-Nutritional- Water intoxication with convulsion, coma, and death.
Miscellaneous- Severe allergic reactions, absence of fibrinogen in the plasma that could be fatal, blood clot in pelvic region.
Other Precautions : 
*Risk of water intoxication when used at high doses for prolonged periods.
Storage Conditions : 
Intravenous: Store at 2-8 °C. Nasal: Store at 2-8 °C. It is usually handled and stored by a health care provider.

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Reference  

  • Food and Drug Administration (FDA)
  • National Institutes of Health (NIH)
  • PubMed
  • CIMS
  • Indian Pharma Reference Guide 2012
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