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Treatment of Bleeding in users of Contraceptive Implants (Implanon) with Ulipristal Acetate

Randomized, experimental study of the use of oral Ulipristal Acetate as a treatment for Abnormal Uterine Bleeding in women using the Etonogestrel Contraceptive Implant (Implanon)

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
REBEC
Registry ID
RBR-38vmd97
Enrollment
Unknown
Registered
2025-12-18
Start date
2026-01-01
Completion date
Unknown
Last updated
2026-01-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Long-Acting Reversible Contraception

Interventions

This is an experimental, randomized, double-blind, placebo-controlled study that will evaluate the effect of Ulipristal Acetate in users of Etonogestrel implants with abnormal uterine bleeding. A tota

Sponsors

Hospital da Mulher Professor Doutor José Aristodemo Pinotti - Centro de Atenção Integral à Saúde da Mulher - CAISM/ Unicamp
Lead Sponsor
UNICAMP - Universidade Estadual de Campinas
Collaborator

Eligibility

Sex/Gender
Female
Age
18 Years to 45 Years

Inclusion criteria

Inclusion criteria: Women aged 18-45; etonogestrel implant users who experience prolonged or recurrent abnormal bleeding (bleeding lasting more than 14 days or episodes with intervals of less than 24 days)

Exclusion criteria

Exclusion criteria: Pregnant women; women who have given birth within the last six months, breastfeeding women; women with abnormal uterine bleeding of unknown cause prior to placement of the ENG implant; women with known pre-existing liver disease, women with blood dyscrasias; users of anticoagulants; users of medication that contraindicates the use of Ulipristal Acetate (vinblastine, digoxin, quinidine, dabigatran etexilate, phenytoin, barbiturates, loperamide, oxycarbamazepine, carbamazepine, rifampicin, griseofulvin, topiramate)

Design outcomes

Primary

MeasureTime frame
It is expected that the use of Ulipristal Acetate will be able to inhibit abnormal bleeding (number of days and number of episodes) in users of the implant with Etonogestrel by up to 6 days, whereas the placebo will not, as verified through menstrual diaries

Secondary

MeasureTime frame
It is expected that the use of ulipristal acetate will be able to reduce the endometrial thickness measured by transvaginal ultrasound to 4 millimeters or less after the end of treatment in users of the Etonogestrel implant, whereas the placebo will not, as verified by transvaginal ultrasound during the 30- and 180-day visits;The use of ulipristal acetate is not expected to cause clinically significant laboratory changes after the end of treatment in users of the implant with Etonogestrel within 6 days, as verified by laboratory tests collected at the baseline visit and at the 30-day visit

Countries

Brazil

Contacts

Public ContactLuis Bahamondes

Hospital da Mulher Professor Doutor José Aristodemo Pinotti - Centro de Atenção Integral à Saúde da Mulher - CAISM/ Unicamp

bahamond@caism.unicamp.br+55(19)32892856

Outcome results

None listed

Source: REBEC (via WHO ICTRP)