Kaia Relief - Cycle System for PMS

This is a single-group, open-label, decentralized clinical trial evaluating the effects of the Kaia Relief - Cycle System (a commercial dietary supplement consisting of Day and Night capsules) on premenstrual symptom severity, menstrual discomfort, and overall well-being in premenopausal women. Forty-five healthy premenopausal women aged 18-45 with regular menstrual cycles and self-reported recurrent premenstrual symptoms will be enrolled.

The study spans approximately 12 weeks across three consecutive menstrual cycles. Cycle 1 serves as a no-product baseline cycle during which participants complete validated questionnaires on Day 5. During Cycles 2 and 3, participants take two Day capsules each morning and two Night capsules each evening, beginning 7 days before their anticipated period and continuing through Day 2 of their cycle. Questionnaires are completed on Day 5 of each product cycle. All study activities are conducted remotely via the Citruslabs digital study platform; there are no in-person visits, blood draws, or laboratory procedures.