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JL-Pro SR is a sustained-release formulation of natural micronized progesterone developed and marketed by Jay Ell Healthcare. Progesterone is an endogenous steroid hormone essential for the regulation of reproductive functions, including the maintenance of the endometrial lining and the support of pregnancy. The sustained-release (SR) delivery system is designed to provide consistent plasma levels with once-daily dosing, which helps minimize common side effects such as drowsiness associated with immediate-release oral progesterone. It is primarily utilized in clinical settings for the management of threatened or recurrent pregnancy loss, preterm birth prophylaxis, and as luteal phase support in assisted reproductive technology (ART), as well as in hormone replacement therapy.
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