Doctors have reported a rare case where the use of a menstrual cup was linked to kidney problems.
Source: https://www.bbc.com/news/articles/c5yv98r4d4eo

Doctors have reported a rare case where the use of a menstrual cup was linked to kidney problems.
Source: https://www.bbc.com/news/articles/c5yv98r4d4eo