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PGL4001, progestin, drug free period

PregLem SA · Phase 3 active Small molecule

PGL4001, progestin, drug free period is a Progestin / Selective Progesterone Receptor Modulator Small molecule drug developed by PregLem SA. It is currently in Phase 3 development for Hormonal contraception with scheduled menstrual cycling. Also known as: Ulipristal acetate.

PGL4001 is a selective progesterone receptor modulator that provides contraceptive and menstrual regulation effects through progestin activity with a structured drug-free period.

PGL4001 is a selective progesterone receptor modulator that provides contraceptive and menstrual regulation effects through progestin activity with a structured drug-free period. Used for Hormonal contraception with scheduled menstrual cycling.

At a glance

Generic namePGL4001, progestin, drug free period
Also known asUlipristal acetate
SponsorPregLem SA
Drug classProgestin / Selective Progesterone Receptor Modulator
TargetProgesterone receptor
ModalitySmall molecule
Therapeutic areaContraception / Women's Health
PhasePhase 3

Mechanism of action

PGL4001 acts as a progestin to suppress ovulation and alter endometrial conditions, preventing pregnancy. The drug-free period design allows for scheduled withdrawal bleeding, mimicking natural menstrual cycles while maintaining contraceptive efficacy. This approach combines hormonal contraception with a defined monthly cycle pattern.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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Frequently asked questions about PGL4001, progestin, drug free period

What is PGL4001, progestin, drug free period?

PGL4001, progestin, drug free period is a Progestin / Selective Progesterone Receptor Modulator drug developed by PregLem SA, indicated for Hormonal contraception with scheduled menstrual cycling.

How does PGL4001, progestin, drug free period work?

PGL4001 is a selective progesterone receptor modulator that provides contraceptive and menstrual regulation effects through progestin activity with a structured drug-free period.

What is PGL4001, progestin, drug free period used for?

PGL4001, progestin, drug free period is indicated for Hormonal contraception with scheduled menstrual cycling.

Who makes PGL4001, progestin, drug free period?

PGL4001, progestin, drug free period is developed by PregLem SA (see full PregLem SA pipeline at /company/preglem-sa).

Is PGL4001, progestin, drug free period also known as anything else?

PGL4001, progestin, drug free period is also known as Ulipristal acetate.

What drug class is PGL4001, progestin, drug free period in?

PGL4001, progestin, drug free period belongs to the Progestin / Selective Progesterone Receptor Modulator class. See all Progestin / Selective Progesterone Receptor Modulator drugs at /class/progestin-selective-progesterone-receptor-modulator.

What development phase is PGL4001, progestin, drug free period in?

PGL4001, progestin, drug free period is in Phase 3.

What are the side effects of PGL4001, progestin, drug free period?

Common side effects of PGL4001, progestin, drug free period include Headache, Nausea, Breast tenderness, Irregular bleeding patterns.

What does PGL4001, progestin, drug free period target?

PGL4001, progestin, drug free period targets Progesterone receptor and is a Progestin / Selective Progesterone Receptor Modulator.

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