Menstrual Products

Trial participants receive free menstrual products for six cycles, including a menstrual cup usable after the study. Prior Isala evidence correlated tampon and cup use with a more protective microbial profile. Scientific evidence on how menstrual products affect the vaginal microbiome remains limited. Monthly kits provide swabs, menstrual products, pH strips, and instructions so participants do not have to arrange their own supplies. Prior Isala evidence associated menstrual pad use with bacteria linked to bacterial vaginosis.