Ocitocina Biol

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Ocitocina Biol

Quick Facts

  • Active Ingredient: Oxytocin
  • Drug Class: Oxytocic hormone (Uterotonic agent)
  • Primary Medical Use: Induction/augmentation of labor, control of postpartum bleeding

Ocitocina Biol is a pharmaceutical product containing the synthetic form of the hormone oxytocin. Naturally produced by the hypothalamus and released by the posterior pituitary gland, oxytocin is a nonapeptide hormone (composed of nine amino acids) that plays a critical role in the female reproductive system. The name oxytocin itself derives from the Greek words meaning "swift birth."

As an oxytocic agent, Ocitocina Biol is primarily used in obstetrics to stimulate or strengthen uterine contractions. Its main medical applications include the induction of labor (to start the birth process) or the augmentation of labor (to strengthen contractions) when medically necessary, such as in cases of certain maternal or fetal conditions.

Additionally, Ocitocina Biol is essential in the postpartum period. It is administered immediately after delivery to help the uterus contract firmly. This action is crucial for preventing or controlling postpartum hemorrhage (excessive bleeding after childbirth), a leading cause of maternal mortality worldwide. The medicine works by binding to oxytocin receptors in the uterine smooth muscle, causing rhythmic contractions. It is administered by a healthcare professional, typically via intravenous infusion or intramuscular injection, in a hospital or clinical setting.

Regulatory References

  1. Postpartum Hemorrhage (NIH StatPearls)

What side effects are possible with Ocitocina Biol?

Possible side effects and safety information

Ocitocina Biol’s safety profile, as documented in official government regulatory information, is characterized by effects on uterine function, the cardiovascular system, and fluid balance. The occurrence of adverse reactions is classified by regulatory authorities based on frequency.

Frequency-Classified Adverse Reactions

Frequency Category Examples of Adverse Reactions (Regulatory Classification)
Common Headache, Nausea, Vomiting
Uncommon Cardiac arrhythmia
Rare Anaphylactic reaction, Uterine rupture
Frequency Not Known Hypotension, Hyponatremia, Water intoxication, Fetal bradycardia

Adverse reactions are officially grouped into System-Organ Classes including Cardiac Disorders, Vascular Disorders, Gastrointestinal Disorders, and those related to Pregnancy, Puerperium and Perinatal Conditions.

Serious Adverse Reactions and Constraints

Official labeling highlights the risks of uterine hypertonicity (excessive uterine contraction) and, rarely, uterine rupture, both associated with overstimulation. Serious metabolic risks include water intoxication and severe hyponatremia, which are linked to prolonged, high-dose intravenous administration. Additionally, the label notes the potential for permanent fetal central nervous system damage or death associated with hypertonic uterine activity. Certain safety risks, such as hypotension and arrhythmias, are noted to be associated with rapid intravenous injection.

Caution is officially advised for use in patients with pre-existing cardiac conditions and for those with renal impairment, as the medicine possesses antidiuretic properties.

Overdose and Emergency Response

Ocitocina Biol Overdose and when to seek help

Element Official Regulatory Documentation
Documented overdose presentations Uterine hypertonicity, sustained (tetanic) uterine contractions, fetal distress, water intoxication, and hyponatremia.
Physiological systems affected Uterine muscle (hyperactivity), Central Nervous System (convulsions, coma), and Renal/Electrolyte systems.
Dose-related factors Overdose is linked to excessive oxytocin dosage causing uterine hyperactivity and high doses infused over extended periods causing water intoxication.
Emergency-response statements Management consists of immediate discontinuation of the oxytocin infusion and the initiation of symptomatic and supportive therapy.
When immediate medical help is required Urgent medical attention is required when signs of severe outcomes are present, including uterine rupture, severe hyponatremia, convulsions, coma, or persistent fetal distress.

Official Overdose Statements

Overdosage is officially documented in regulatory information to present primarily as uterine hyperstimulation, characterized by abnormally strong or prolonged contractions and an elevated resting uterine tone. Systemically, excessive doses infused over extended periods may lead to water intoxication and hyponatremia (low sodium levels), potentially affecting the central nervous system and causing severe events like convulsions or coma.

Documented severe outcomes include the risk of uterine rupture, fetal death, and maternal death secondary to complications from severe water intoxication. Regulatory documents state that no specific antidote is known for oxytocin. In all cases of suspected overdosage, the required action is the immediate discontinuation of the infusion, followed by the initiation of symptomatic and supportive therapy. Urgent medical assistance is required immediately if manifestations such as persistent fetal distress or uterine rupture are suspected.

Therapeutic Uses of Ocitocina Biol

What Ocitocina Biol Treats: Main Uses and Benefits

Ocitocina Biol is primarily applied in domains where acute obstetric symptoms require immediate and supportive symptom management. The medication is commonly used to help with the induction or augmentation of labor in situations marked by insufficient uterine contractions, and is used for managing symptoms of acute postpartum bleeding caused by uterine atony. It is also relevant in contexts involving supportive care, such as facilitating the milk-ejection reflex and assisting with the management of symptoms associated with miscarriage. This approach assists with maintaining functional stability and may support a more manageable course through these acute episodes. These uses fall into the key areas of labor management, management of symptoms of postpartum bleeding, and supportive care for miscarriage and lactation.

Quick Fact: Relief for Acute Bleeding The drug plays a role in managing the symptom of excessive blood loss after delivery, which is often associated with the condition of uterine atony.

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Ocitocina Biol — Official Regulatory Information

The following is a summary of the officially documented population eligibility and non-eligibility for this medicine, as specified in regulatory documents.

Eligibility Scope

Classification Population Group or Condition
Populations Allowed Adult women with a medical indication for the initiation or augmentation of labor, or for controlling postpartum hemorrhage.
Contraindicated Women with significant cephalopelvic disproportion, hypertonic uterine patterns, or unfavorable fetal positions (e.g., transverse lies).
Contraindicated Any case where vaginal delivery is prohibited, such as total placenta previa or cord prolapse [1.1].
Restricted Use History of major surgery on the uterus (e.g., Caesarean section), grand multiparity, or overdistention of the uterus (use only in unusual circumstances) [1.7].
Age-Related Use is not established in the pediatric population (under 18) and there are no indications for use in the elderly (over 65) [3.3].
Condition-Specific Caution required for patients with severe renal impairment or a predisposition to myocardial ischaemia [3.2].
Lactation The medicine may be present in small quantities in breast milk [2.1].

Eligibility Classifications (High-Level)

Classification Severity Regulatory Basis
Contraindicated (Absolute prohibition) FDA Prescribing Information, SmPC Documents [1.1].
Restricted / Caution (Conditional use) SmPC Documents, NIH [1.7, 3.2].
Not Established (Insufficient data) SmPC Documents, FDA [1.4, 3.3].

Connection to the overall eligibility profile: Regulatory documents primarily define eligibility by establishing absolute exclusions (contraindications) based on immediate obstetric risks and ruling out non-obstetric age groups (pediatric and geriatric) where use is not established [1.1, 3.3]. Further restrictions limit use to conditional circumstances for patients with compromised uterine integrity or pre-existing severe cardiovascular or renal conditions [1.7, 3.2].

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products

The interaction profile of Ocitocina Biol (Oxytocin) is defined by its strong effects on uterine smooth muscle and the cardiovascular system, as documented in official government prescribing information.

Official Interaction Statements

Interaction Type Interacting Agents Regulatory Constraint
Potentiation Prostaglandins and their analogues, other uterotonics Co-administration is not recommended due to increased risk of excessive uterine activity.
Cardiovascular Vasoconstrictors (Sympathomimetics) Can lead to severe hypertension when administered following caudal block anesthesia.
Cardiovascular Inhalation Anaesthetics (e.g., Cyclopropane) May enhance hypotension and, with cyclopropane, cause maternal sinus bradycardia.

Timing and Separation Requirements

Regulatory documents specify necessary time separation for certain co-administrations:

  • Ocitocina Biol administration must be delayed for at least 6 hours following the administration of vaginal prostaglandins.

Pharmacodynamic Focus

The documented interactions are primarily pharmacodynamic, meaning they result from the combined effects of the medicines on the body, rather than alterations in how Ocitocina Biol is cleared. The product is also noted to be potentially arrhythmogenic in patients receiving QT-prolonging drugs or those with a history of Long QT Syndrome. Official labeling does not list interactions with food, alcohol, or herbal products.

Mechanism of Action

Ocitocina Biol, a peptide molecule, functions as an agonist at the Oxytocin Receptor (OXTR). This receptor is a member of the G-protein-coupled receptor (GPCR) superfamily, primarily coupled to the Gq protein signaling cascade. The drug exhibits high affinity for OXTRs, which are widely distributed but selectively upregulated in specific tissues, such as the myometrium of the uterus and myoepithelial cells of the mammary gland, particularly during late gestation.

Upon Ocitocina Biol binding, the activated OXTR initiates the Gq-dependent signaling pathway. This action stimulates Phospholipase C-beta (PLC-β), leading to the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) into Inositol 1,4,5-trisphosphate (IP3) and Diacylglycerol (DAG). IP3 mediates the release of calcium ions (Ca^2+) from the intracellular sarcoplasmic reticulum stores, significantly increasing the intracellular Ca^2+ concentration. DAG, along with Ca^2+, activates Protein Kinase C (PKC). The resulting surge in intracellular Ca^2+ levels facilitates the binding of calcium to calmodulin, leading to the activation of myosin light-chain kinase (MLCK). Activated MLCK phosphorylates myosin light chains, which is the requisite molecular step for the interaction of actin and myosin filaments. This process culminates in smooth muscle cell contraction within the targeted tissue. Furthermore, OXTR activation in the uterus stimulates the release of prostaglandins, which further modulate myometrial activity. System-level physiological consequences include generalized smooth muscle contraction and vasodilation, contributing to circulatory system regulation and fluid homeostasis.

Dosage and Administration Information

Ocitocina Biol (oxytocin injection) is an acute-care medication administered only by trained healthcare professionals in a controlled, supervised setting, such as a hospital. The specific method and dosage regimen depend on the indication, as established in prescribing information.

Official Routes of Administration and Dosing

Primary Use Context Labeled Route Dosing Regimen (Ranges)
Labor Induction/Augmentation Intravenous (IV) Infusion Initial rate of 0.5 to 2 milliUnits/minute (mU/min), titrated gradually.
Postpartum Hemorrhage Intramuscular (IM) Injection or IV Infusion 10 units IM after placental delivery, OR 10 to 40 units diluted for IV infusion.
Abortion Management Intravenous (IV) Infusion Infusion rate of 10 to 40 mU/min; total dose should not exceed 30 units in a 12-hour period.

Administration and Procedural Rules

IV Infusion Protocol: For labor management, the drug must be administered as a continuous IV infusion using an infusion pump to ensure accurate rate control. The injectable solution must be diluted using a physiologic electrolyte solution (e.g., 0.9% Sodium Chloride). The infusion rate is increased gradually in small increments (e.g., 1 to 2 mU/min) over specified intervals (e.g., 30 to 60 minutes or not shorter than 20 minutes) until the desired uterine activity is established.

Timing Restriction: Oxytocin should not be initiated for at least 6 hours following the administration of vaginal prostaglandins, which is a key administration constraint. There are no explicit dose adjustments specified for older adults, or patients with renal or hepatic impairment, as it is not indicated for these populations.

These instructions establish a standardized, highly controlled procedural protocol for administration, defining the required routes, dosage ranges, preparation methods, and time constraints for use in obstetric care.

Recent Clinical Evidence

Evidence for Use in Labor Induction and Augmentation

The medicine's use for starting labor (induction) or strengthening contractions (augmentation) was studied in Randomized Controlled Trials (RCTs) and meta-analyses. The studies explored outcomes related to functional balance during labor, monitoring uterine activity and the duration of labor. Research highlighted a difference in measured duration of labor between the intervention and control groups. However, findings varied across studies regarding the measurements of the rate of Cesarean delivery, and short-term effects on neonatal status were examined.


Evidence for Preventing Postpartum Hemorrhage

Research examined the medicine's role in the context of excessive blood loss after delivery (Postpartum Hemorrhage or PPH). The evidence consists of systematic reviews and extensive meta-analyses comparing groups receiving the medicine to controls. Research monitored blood loss volumes (specifically exceeding 500 mL and 1,000 mL), uterine tone, and the need for blood transfusion. Findings describe patterns where measurements of blood loss over 500 mL were less frequent in the groups studied, and studies reported patterns of uterine tone measurements following delivery.


Evidence for Management Associated with Miscarriage

Research explored the use of the medicine for managing symptoms associated with second-trimester miscarriage. Studies often took the form of comparative trials that examined outcomes related to uterine evacuation and the eventual need for subsequent surgical procedures. Findings indicate the medicine was observed in some studies during procedures that examined successful emptying of the uterus, reflecting established clinical practice protocols.


Remaining Gaps and Uncertainties in the Evidence

Areas where certainty remains low include outcomes related to the most severe blood loss (exceeding 1,000 mL) and the optimal dosing protocols, which show variability across studies. Long-term effects for either the mother or the child are not fully established, as follow-up durations in most research were limited to the acute period. Additionally, data for certain population subgroups remain insufficient to draw broad conclusions.

Frequently Asked Questions (FAQ)

Common questions about Ocitocina Biol (FAQ)

Q: Can Ocitocina Biol cause long-term side effects?

A: Official regulatory documents describe that long-term safety for the mother and child is not fully established, as most research follow-up was limited to the acute period of use. Regulatory documents do note the potential for permanent fetal central nervous system damage or death associated with uterine hypertonicity (excessive contraction) during administration.

Q: What are the guidelines for using Ocitocina Biol during pregnancy or breastfeeding?

A: The medicine’s primary indication is for use during specific times in late pregnancy (such as labor induction) and immediately postpartum (such as hemorrhage control). Regarding breastfeeding, regulatory documents indicate that the medicine may be present in small quantities in breast milk following administration.

Q: Why is Ocitocina Biol sometimes available in different formulations (e.g., tablet vs. liquid)?

A: Official drug information describes the product as a sterile aqueous solution for intravenous infusion or intramuscular injection. Its primary approved uses involve highly controlled administration in a clinical setting exclusively via these injectable routes.

Q: What are the official signs of a possible allergic reaction to Ocitocina Biol?

A: Official safety information notes the risk of a rare but serious anaphylactic reaction (a severe allergic reaction). Signs associated with this type of reaction may include hives, rash, swelling of the face or throat, chest tightness, or trouble breathing.

Q: What are the official signs of an overdose listed in the product information?

A: While the specific word 'overdose' may not be consistently used, official labeling describes risks associated with excessive administration, which are classified as serious adverse reactions. These include uterine hypertonicity (excessive, prolonged contractions), uterine rupture, and risks related to fluid imbalance like severe hyponatremia and water intoxication.

Q: How is the absorption of Ocitocina Biol described?

A: The rate of effect depends on the route of administration. Following intravenous administration, the uterine response occurs almost immediately and subsides within one hour. Following intramuscular injection, the response occurs within 3 to 5 minutes and persists for two to three hours.

Q: Is it normal to feel tired or dizzy after starting Ocitocina Biol?

A: Official adverse reaction lists include headache as a Common side effect. However, other central nervous system or fatigue-related effects such as tiredness or dizziness are not listed as common or uncommon side effects in regulatory documents.

Q: Does Ocitocina Biol affect my ability to drive or operate machinery?

A: There is no explicit statement in the regulatory documents regarding specific restrictions on driving or operating machinery for Ocitocina Biol. The common side effects are noted as headache, nausea, and vomiting.

Q: How quickly should I expect to notice the effects of Ocitocina Biol?

A: The effect of the medicine is very rapid. According to official product information, after intravenous administration, the desired uterine response occurs almost immediately.

Q: What is the typical duration of Ocitocina Biol's effects after one use?

A: The typical duration of the effect is short due to the drug’s rapid clearance. The effect of the intravenous dose subsides within one hour, while the effect of an intramuscular dose persists for two to three hours.

Q: Can I take common pain relievers like paracetamol or ibuprofen with Ocitocina Biol?

A: Official regulatory documents do not list specific interactions with common non-opioid pain relievers such as Paracetamol (Acetaminophen) or Ibuprofen. The documented interaction profile focuses on other uterotonics, vasoconstrictors, and inhalation anesthetics.

Q: Are there any warnings about stopping Ocitocina Biol suddenly?

A: Due to the medicine’s short plasma half-life (approximately 3 to 5 minutes) and rapid clearance from the body, its effects quickly diminish after discontinuation of the infusion. This rapid reduction in effect is a key characteristic noted in clinical documentation.

Q: Can Ocitocina Biol interact with contraceptive medications?

A: Official regulatory documents for Ocitocina Biol do not list specific interactions with contraceptive medications. The documented interaction profile primarily focuses on other drugs that affect uterine muscle contraction and cardiovascular agents.

Q: Is there a generic version of Ocitocina Biol available for sale?

A: Regulatory information confirms that the active ingredient oxytocin is available. The FDA has approved generic versions of oxytocin injections.

Q: What is the half-life of Ocitocina Biol?

A: The plasma half-life of Ocitocina Biol (oxytocin) following intravenous administration is typically reported as being very short, at 3 to 5 minutes.

Q: Is Ocitocina Biol a high-alert medication?

A: Yes, Ocitocina Biol (oxytocin) has been added to the Institute for Safe Medication Practices' (ISMP) list of High Alert Medications in Acute Care Settings. This classification is based on the high risk of causing significant harm if the medicine is administered incorrectly.

How should Ocitocina Biol be stored and disposed of?

Storage and Disposal of Oxytocin Injection

Oxytocin injection must be stored under specific, strictly controlled conditions as detailed in official regulatory labeling to ensure its stability.

Storage Requirement Condition
Temperature Store in a refrigerator (2 C to 8 C).
Freezing Do not freeze the product.
Protection Store in the original carton to protect the contents from light.
Child Safety Keep out of the sight and reach of children.
Diluted Stability The diluted solution is typically stable for 24 hours at room temperature.

Unused or expired product must be handled as pharmaceutical waste. Do not dispose of the medicine via general household waste or wastewater. Dispose of all materials according to local regulatory requirements.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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