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Kelnor 1/35 Disp Pack — prescription drug image

Kelnor 1/35

Kelnor 1/35 28 Tablets

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What is Kelnor 1/35?

Kelnor 1/35 is an oral contraceptive pill composed of a combination of ethinyl estradiol and ethynodiol diacetate. It is primarily used to prevent pregnancy and also prescribed for managing acne or regulating menstrual cycles in women. The formulation works by inhibiting ovulation, altering the cervical mucus, and changing the uterine lining to prevent fertilization and implantation.

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What is Kelnor 1/35 ?

Kelnor 1/35 is an oral contraceptive pill composed of a combination of ethinyl estradiol and ethynodiol diacetate. It is primarily used to prevent pregnancy and also prescribed for managing acne or regulating menstrual cycles in women. The formulation works by inhibiting ovulation, altering the cervical mucus, and changing the uterine lining to prevent fertilization and implantation.
  • Unusual or unexpected vaginal bleeding or heavy bleeding
  • Sudden severe headache, problems with vision, speech, or walking
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Breast lumps, tenderness, pain, swelling, or discharge
  • Chest pain or tightness, trouble breathing, or coughing up blood
  • Dark urine, pale stools, loss of appetite, yellow skin or eyes
  • Irregular, late, or missed menstrual periods
  • Numbness or weakness on one side of your body
  • Pain in your lower leg (calf)
  • Rapid weight gain, swelling in your hands, ankles, or feet
  • Sudden and severe stomach pain, nausea, vomiting, lightheadedness
  • Yellowing of your skin or the whites of your eyes.
  • It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant.
  • Tell your doctor if you are breastfeeding or if you have recently been pregnant. Tell your doctor if you have high blood pressure, high cholesterol in the blood, diabetes, breast lumps, migraine headaches, tuberculosis, or a history of depression, seizures, gallbladder disease, heart disease, kidney disease, or irregular monthly periods, or a family history of breast cancer.
  • This medicine may cause the following problems:Increased risk of heart attack, stroke, or blood clotsIncreased risk of cancer (including cancer of the breast, endometrium, ovaries, and cervix)Liver problemsEye or vision problemsGallbladder diseaseHigh cholesterol in the bloodHigh blood pressure
  • This medicine will not protect you from getting HIV/AIDS or other sexually transmitted diseases.
  • You might have some light bleeding or spotting when you first start using this medicine. However, if you have heavy bleeding or the bleeding lasts more than seven days in a row, call your doctor.
  • Tell any doctor or dentist who treats you that you are using this medicine. You may need to stop using this medicine several days before you have surgery or medical tests.
  • Tell any doctor or dentist who treats you that you are using this medicine. This medicine may affect certain medical test results.
  • Your doctor will check your progress and the effects of this medicine at regular visits. Keep all appointments.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • This medicine will not protect you from getting HIV/AIDS or other sexually transmitted diseases. If this is a concern for you, talk with your doctor.
  • Your doctor will check your progress and the effects of this medicine at regular visits. Keep all appointments.
  • Call your doctor for a pregnancy test if your menstrual period does not start while taking this pills.
What is Kelnor 1/35 used for?
Kelnor 1/35 is an FDA-approved combination birth control pill used to prevent pregnancy. Clinicians also sometimes prescribe combined pills like this one off-label to help manage abnormal uterine bleeding, acne, painful periods, or endometriosis-related pain, but pregnancy prevention is its approved use. It does not protect against HIV or other STIs.
What is the difference between Kelnor 1/35 and Kelnor 1/50?
The numbers in combination pill names generally refer to the hormone doses in the tablet, with the second number indicating the estrogen (ethinyl estradiol) dose in micrograms. Kelnor 1/35 contains 35 mcg of ethinyl estradiol. A '1/50' version would contain a higher estrogen dose. Because exact current formulations and availability can change, confirm the specific strength and whether it's the right choice for you with your pharmacist or prescriber.
Is there a generic version of Kelnor 1/35?
Yes. A generic version of ethynodiol diacetate and ethinyl estradiol (1 mg/35 mcg) is FDA-approved and available, and it's generally substitutable for brand-name Kelnor 1/35. Asking your pharmacist to fill the generic is usually the most effective way to lower your cost.
What happens if I miss a dose of Kelnor 1/35?
Missed-pill instructions for combination oral contraceptives depend on how many pills you've missed and where you are in your pack, and using backup contraception may be necessary. Because these instructions are specific and important to get right, check the patient information that comes with your prescription or call your pharmacist or prescriber right away for guidance rather than guessing.
Can I take Kelnor 1/35 if I smoke?
Smoking while taking Kelnor 1/35 significantly increases the risk of serious cardiovascular problems like heart attack, stroke, and blood clots, and this risk is higher the older you are and the more you smoke. Kelnor 1/35 is not recommended for women over 35 who smoke. If you smoke, talk with your prescriber about your personal risk and other birth control options.
How much does Kelnor 1/35 cost without insurance?
The price of Kelnor 1/35 without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save up to 31% off retail prices with a free Rx.com coupon.
What are the common side effects of Kelnor 1/35?
Common side effects of Kelnor 1/35 may include: Unusual or unexpected vaginal bleeding or heavy bleeding, Sudden severe headache, problems with vision, speech, or walking, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Breast lumps, tenderness, pain, swelling, or discharge, Chest pain or tightness, trouble breathing, or coughing up blood. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Kelnor 1/35?
Generic versions may be available for Kelnor 1/35. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Kelnor 1/35 on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Kelnor 1/35?
The cheapest pharmacy for Kelnor 1/35 depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Kelnor 1/35 near you.

Kelnor 1/35 Coupons & Prices

Kelnor 1/35 28 Tablets

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Kelnor 1/35 Disp Pack — prescription drug image
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Kelnor 1/35 1 package (28 tablets), 1-35mg-mcg (1)
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Looking for a Kelnor 1/35 coupon? Kelnor 1/35 is a combination oral contraceptive (1 mg ethynodiol diacetate and 35 mcg ethinyl estradiol) used to prevent pregnancy, and because a generic version of this exact formulation is available, comparing pharmacy prices is often the biggest lever for lowering what you pay — enter your ZIP above to see today's price at pharmacies near you.

What Is Kelnor 1/35 and How Does It Work?

Kelnor 1/35 is a monophasic combined hormonal birth control pill, meaning every active tablet contains the same dose of hormone: 1 mg ethynodiol diacetate (a progestin) and 35 mcg ethinyl estradiol (an estrogen). It's FDA-approved for the prevention of pregnancy in women who choose oral contraceptives as their method of birth control, and is typically taken as 21 active (light yellow) tablets followed by a placebo or hormone-free interval in a 28-day pack. Like other combined hormonal contraceptives, it does not protect against HIV or other sexually transmitted infections.

Combined pills in this class are also commonly prescribed off-label by clinicians to help manage abnormal uterine bleeding, acne, painful periods (dysmenorrhea), and endometriosis-related pain, though pregnancy prevention remains the FDA-approved use. Talk with your prescriber about whether Kelnor 1/35 is appropriate for any off-label reason.

Kelnor 1/35 Coupon: Manufacturer Card vs. Rx.com Cash Price

Kelnor 1/35 doesn't currently have a manufacturer copay savings card program the way some newer branded contraceptives do — so for most patients, the real savings decision is brand versus generic, and which pharmacy you fill at. Because an FDA-approved generic of this exact formulation (ethynodiol diacetate/ethinyl estradiol 1 mg/35 mcg) is available and substitutable, asking your pharmacist to fill the generic is typically the single biggest way to lower your out-of-pocket cost.

Whether you're uninsured, on Medicare (which generally doesn't cover contraceptives the way commercial plans do), or your insurance simply doesn't cover this specific brand, the Rx.com cash coupon can be used at the pharmacy counter for either the brand or the generic. Prices vary by pharmacy and change frequently, so it's worth comparing before you fill — enter your ZIP above to see current pricing near you.

Kelnor 1/35 Alternatives and Comparable Pills

Zovia 1/35 is the same formulation — 1 mg ethynodiol diacetate and 35 mcg ethinyl estradiol — sold under a different brand name, so it's a direct equivalent to ask your pharmacist about if price or availability differs. (Demulen 1/35, an older brand of this same formulation, has been discontinued and is no longer marketed, so it isn't an option to fill.)

If Kelnor 1/35 isn't the right fit, your prescriber may discuss other combined oral contraceptives, which differ in their specific progestin, hormone dosing pattern, or additional ingredients — for example Ortho Tri-Cyclen (a triphasic combination pill), Yaz (uses a different progestin, drospirenone), or Junel Fe 1/20 (a lower-estrogen pill with added iron tablets). These are not interchangeable with Kelnor 1/35 without your provider's guidance, since each has its own dosing and risk profile.

Kelnor 1/35 Safety Information

Kelnor 1/35 carries a boxed warning: cigarette smoking increases the risk of serious cardiovascular side effects (heart attack, stroke, and blood clots) in women who use combination oral contraceptives, and this risk rises with age — particularly after 35 — and with the number of cigarettes smoked. It is not recommended for women over 35 who smoke.

Kelnor 1/35 is contraindicated in women with thrombophlebitis or other thromboembolic disorders (or a history of these), cerebrovascular disease, a heart attack, or coronary artery disease (or a history of these), known or suspected breast cancer or other estrogen-dependent cancer, undiagnosed abnormal genital bleeding, a history of cholestatic jaundice, liver tumors, or known or suspected pregnancy, and in women taking certain hepatitis C drug combinations (those containing ombitasvir/paritaprevir/ritonavir, with or without dasabuvir). Separately, your doctor may advise against Kelnor 1/35, or monitor you more closely, if you have uncontrolled high blood pressure, migraine, or are facing major surgery involving prolonged immobilization — the label flags these as factors that raise the risk of serious cardiovascular side effects, so they call for individual clinical judgment rather than being an automatic disqualifier. Kelnor 1/35 can also raise blood pressure and, rarely, has been associated with gallbladder disease and liver tumors. Common, generally milder side effects include nausea, breakthrough bleeding, breast tenderness, and headache. This is general information, not medical advice — talk with your doctor or pharmacist about whether Kelnor 1/35 is safe for you.

Sources & accuracy

This Kelnor 1/35 information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Kelnor 1/35 on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.


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