Taking Charge of Your Fertility

The book that taught a generation how to read their own cycle. Evidence-based, empowering, and still the best place to start.

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Maria Approved

Assessed across the five dimensions of our standard: heightened safety, designed with women, ingredient honesty, ethical production, and editorial review. Anything still open on this product is listed under verification below.

Made by Women

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Made by Women: Founded by a woman or women, or currently led by a woman as CEO or equivalent. Verified through public business records or brand attestation with documentation.