Kelnor 1/35
Ingredients: Ethynodiol diacetate 1 mg and ethinyl estradiol 0.035 mg
Pack: 28 tablets: 21 light-yellow active tablets, then 7 white placebo tablets.
Label update: October 19, 2022
View the Kelnor 1/35 referenceUS formulation reference
Ethynodiol diacetate and ethinyl estradiol birth control pill reference
This reference groups selected US products whose labels list ethynodiol diacetate and ethinyl estradiol. Matching ingredients and strengths do not establish interchangeability. Use the exact pack label and ask a pharmacist about substitution.
Selected official-label products
Each card below links to a US DailyMed label. The grouping reflects the ingredient or pack family named in that label, not a clinical recommendation or substitution decision.
Zovia 1/35
Ingredients: Ethynodiol diacetate 1 mg and ethinyl estradiol 0.035 mg
Pack: 28 tablets: 21 pale-pink active tablets, then 7 white placebo tablets.
Label update: June 1, 2024
View the Zovia 1/35 referenceDo not use this page to self-substitute
A shared ingredient family does not settle a pharmacy substitution or personal treatment decision. Check the exact name, strength, tablet sequence, and leaflet for the pack in your hand. Ask the dispensing pharmacist to explain any change.
Read the US pharmacy brand-switch guideFrequently Asked Questions
Does sharing an ingredient family mean two birth control pills are interchangeable?
No. Ingredient names, strengths, tablet sequence, labeling, packaging, and patient instructions must all be considered for the exact product. A pharmacist should answer an interchangeability or substitution question.
Where can I find instructions for my exact birth control pill pack?
Open the official label for the exact product and market, read the leaflet supplied with your medicine, and ask a pharmacist or qualified healthcare professional for personal guidance.
Sources
- Kelnor 1/35 official product label, DailyMed, US National Library of Medicine.
- Zovia 1/35 official product label, DailyMed, US National Library of Medicine.
- Source review date: September 24, 2026.
Keep your routine together
Use Estroclic to record your current pill, schedule, and personal timeline.
Estroclic is a personal tracking app. It can help you organize information, but your patient leaflet, pharmacist, or clinician remains the right source for personal medical guidance.
Estroclic provides general information and personal tracking tools, not medical, pharmaceutical, or clinical advice. Check the patient information leaflet for your exact medicine and speak with a pharmacist or qualified healthcare professional when you need individual guidance.