Using hyoscine butylbromide to shorten the first stage of labor

Effect of Hyoscine- Bromide on Duration of the First Stage of Labor

Not applicable Interventional Ain Shams University · NCT06056869

This study is testing if a medication called hyoscine butylbromide can help first-time pregnant women have a shorter first stage of labor.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages20 Years to 40 Years
SexFemale
SponsorAin Shams University Academic / other
Locations1 site (Cairo, Cairo/القاهرة)
Trial IDNCT06056869 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of hyoscine butylbromide (HBB), a spasmolytic drug, in reducing the duration of the first stage of labor in first-time pregnant women. It is a randomized, double-blind, placebo-controlled trial where participants will receive either HBB or a placebo (normal saline) during active labor. The study focuses on women who are between 37 and 42 weeks of gestation and are experiencing cervical dilation of 4-5 cm. The goal is to determine if HBB can significantly shorten labor time compared to the placebo.

Who should consider this trial

Good fit: Ideal candidates for this study are first-time pregnant women with singleton pregnancies who are in active labor.

Not a fit: Patients with previous uterine scarring, malpresentation, or contraindications to vaginal delivery or hyoscine will not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could lead to shorter labor durations and improved delivery experiences for first-time mothers.

How similar studies have performed: While the use of spasmolytic drugs in labor is common, the specific efficacy of hyoscine butylbromide in this context has not been extensively studied, making this approach relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Primigravid women.
2. Singleton pregnancy.
3. Presenting by the vertex.
4. Gestational age between 37 and 42 weeks
5. In active phase of labor with a cervical dilatation between 4-5 cm, with either intact membranes or spontaneous rupture of membranes for less than 12 h

Exclusion Criteria:

1. Previous uterine scarring.
2. Malpresentation.
3. Antepartum hemorrhage.
4. Labor induction
5. Contraindication to vaginal delivery.
6. Contraindication to hyoscine.

Where this trial is running

Cairo, Cairo/القاهرة

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Labor
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.