Ethynodiol: Side Effects, Uses & Monitoring
Zovia 1/35E and Zovia 1/50E are indicated for the prevention of pregnancy in women who elect to use oral contraceptives as a method of contraception.
- Data source
- FDA labeling via NIH DailyMed (label e7d7b18e…)
- Label version
- current
- Last reviewed
- 2026
Reported adverse reactions
Reactions listed in current FDA labeling, with the highest frequency reported across summarized placebo-controlled trials.
No structured frequency data available in current labeling. Consult the official label.
Labeled uses (from FDA prescribing information)
Zovia 1/35E and Zovia 1/50E are indicated for the prevention of pregnancy in women who elect to use oral contraceptives as a method of contraception. Oral contraceptive products such as Zovia 1/50E, which contain 50 mcg of estrogen, should not be used unless medically indicated. Oral contraceptives are highly effective. Table 1 lists the typical accidental pregnancy rates for users of combination oral contraceptives and other methods of contraception. The efficacy of these contraceptive methods, except sterilization and progestogen implants and injections, depends upon the reliability with which they are used. Correct and consistent use of methods can result in lower failure rates. Table 1. Percentage of women experiencing an unintended pregnancy during the first year of typical use and the first year of perfect use of contraception and the percentage continuing use at the end of the first year. United States. | % of women experiencing | % of women | | an unintended pregnancy | continuing | | within the first year of use | use at one | | | | year (C) | | | | | Method | Typical use (A) | Perfect use (B) | | (1) | (2) | (3) | (4) | Source: Trussel…
Frequently Asked Questions
What is Ethynodiol used for?
FDA labeling lists the approved uses shown above under "Labeled uses." This summary is informational; only a qualified prescriber can determine whether a medication is appropriate for you.
What are the most commonly reported side effects of Ethynodiol?
Current labeling for this ingredient does not include a structured frequency table that we can reproduce. Review the official label linked below.
Does Ethynodiol require lab monitoring?
Monitoring needs vary. Ask your healthcare provider whether any lab tests apply while taking Ethynodiol.
Where does this information come from?
All clinical facts on this page were extracted from the current FDA-registered product labeling for this ingredient, published by manufacturers through NIH DailyMed. See the source link below.
Medical disclaimer: Educational content extracted from public FDA labeling. Not medical advice. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.