What is Diane 35
Diane 35 is a combined hormonal tablet that contains cyproterone acetate (an antiandrogen and progestin) with ethinyl estradiol (an estrogen). Outside the United States, it is often prescribed to help manage acne and hirsutism driven by androgen excess, particularly in people with polycystic ovary syndrome. Because it is a combined hormonal contraceptive, it also prevents pregnancy when taken as directed.
The formulation helps regulate cycles and typically reduces symptoms such as oily skin, breakouts, and unwanted hair growth. Benefits can take several months to become evident.
Dosage and administration
Follow the regimen supplied by your prescriber. A commonly used schedule for combined oral contraceptives like Diane 35 is:
- Take one tablet daily at the same time for 21 consecutive days.
- Then pause for 7 days with no tablets; withdrawal bleeding usually occurs during this break.
- Start the next pack after the 7-day interval, even if bleeding has not fully stopped.
Do not change your dose, skip active tablets, or stop without medical advice. If a clinician recommended diet or lifestyle changes for PCOS, continue those alongside treatment.
If you miss a pill, see the guidance here. For special situations (postpartum, switching from another method), ask your clinician for tailored instructions.
Warnings and precautions
Discuss your health history with a healthcare professional before starting. Important cautions include:
- Breastfeeding and pregnancy: do not use during pregnancy; avoid while breastfeeding unless your clinician advises otherwise.
- Liver concerns: avoid or use with close medical supervision if you have active liver disease or tumors.
- Blood clot risk: smoking, age over 35, prior clots, or certain thrombophilias increase risk of venous thromboembolism.
- Migraines: migraine with aura is a red flag for combined estrogen use.
- Obesity and prolonged immobility: may further raise clot risk; discuss perioperative stopping rules.
- Cancers sensitive to estrogen or progestin: history of breast cancer or other hormone-sensitive cancers requires specialist input.
- Unexplained vaginal bleeding: evaluate before starting.
Who should not use Diane 35
- Current or prior blood clots, stroke, or heart attack.
- Pregnancy or breastfeeding.
- Severe hepatic disease or liver tumors.
- Known or suspected breast cancer or other estrogen-sensitive malignancy.
- Migraine with aura.
- Undiagnosed genital bleeding.
- Smoking in individuals older than 35 years.
Possible side effects
Most effects are mild and improve as the body adjusts. If you experience severe symptoms or signs of blood clot (leg swelling or pain, chest pain, sudden shortness of breath), seek emergency care.
- Headache
- Nausea or stomach discomfort
- Mood changes or irritability
- Breast tenderness or pain
- Abdominal pain or cramps
- Weight changes or fluid retention
Drug interactions
Some medicines can reduce contraceptive effect or change hormone levels:
- Antiepileptics such as carbamazepine, phenytoin, and topiramate.
- Anti-HIV drugs, for example ritonavir or efavirenz.
- Anticoagulants like warfarin or heparin may have altered effects; monitoring may be needed.
- Rifampin or rifabutin and certain antibiotics with enzyme induction.
- Herbals such as St. John's wort (Hypericum perforatum).
Tell your clinician and pharmacist about all prescriptions, OTC products, and supplements. Consider a backup method if using enzyme inducers.
Missed dose guidance
If you are late by less than 12 hours, take the tablet as soon as remembered and continue the next one at the usual time.
If more than 12 hours have passed, general combined pill rules apply:
- Take the most recently missed tablet now; discard earlier missed tablets.
- Continue the rest at the usual time.
- Use condoms or abstain for the next 7 days.
- If the miss occurs in week 3, skip the 7-day break and start a new pack immediately after finishing the active tablets.
If vomiting or severe diarrhea occurs within 3-4 hours of a dose, take another tablet as soon as possible and use backup contraception.
Overdose
Taking more than prescribed may cause nausea, vomiting, headache, or breakthrough bleeding. Serious toxicity is uncommon, but you should contact a healthcare professional or a poison control center for advice.
Storage
- Keep in a dry place below 25 C (77 F) and away from direct sunlight.
- Protect from moisture and excessive heat.
- Store out of sight and reach of children and pets.
- Do not use after the expiration date printed on the pack.
Alternatives and similar medications in the U.S.
Cyproterone acetate products, including Diane 35, are not approved in the United States. However, several evidence-based alternatives are commonly used for acne, hirsutism, and PCOS-related symptoms. Selection depends on personal risk factors and treatment goals.
Combined oral contraceptives (COCs) available in the U.S
- Ethinyl estradiol + norgestimate (e.g., Ortho Tri-Cyclen and generics) - FDA approved for acne treatment.
- Ethinyl estradiol + drospirenone (e.g., Yaz, Yasmin, and generics) - useful for acne; Yaz also has an indication for PMDD.
- Ethinyl estradiol + norethindrone acetate/ferrous fumarate (e.g., Estrostep Fe and generics) - FDA approved for acne.
- Other COCs with ethinyl estradiol combinations - may help with cycle control and acne even if not specifically labeled.
Non-contraceptive or adjunct options
- Spironolactone (oral antiandrogen) - frequently used for acne and hirsutism; reliable contraception is required due to teratogenic risk.
- Topical treatments for acne - benzoyl peroxide, topical retinoids (adapalene, tretinoin), clindamycin/benzoyl peroxide combinations.
- Metformin - targets insulin resistance in PCOS; may aid cycle regularity and metabolic parameters.
- Eflornithine 13.9% cream - slows facial hair growth.
- Isotretinoin - for severe nodulocystic acne; strict iPLEDGE program requirements apply.
Outside the U.S., cyproterone acetate combinations like Diane 35 may be used under local regulations. In the U.S., comparable therapeutic goals are usually achieved with the agents above.
Approximate prices in USD
Prices vary by pharmacy, location, insurance coverage, and discount programs. The ranges below are typical cash prices without insurance unless noted.
- Diane 35 (not marketed in the U.S.): international online pharmacies often list about $10-$25 for a 21-tablet pack; shipping and legality vary.
- Generic COCs (various EE + progestin combos): roughly $15-$50 per monthly pack; with insurance or discount plans often $0-$20.
- Drospirenone/ethinyl estradiol (Yaz/Yasmin, generics): about $25-$80 per month depending on brand vs generic.
- Norgestimate/ethinyl estradiol (e.g., Ortho Tri-Cyclen generics): around $15-$45 per month.
- Spironolactone: generics approximately $4-$15 per month for common doses.
- Metformin: generics typically $4-$10 per month.
- Eflornithine cream: about $80-$160 per tube; variable coverage.
- Isotretinoin: $200-$400+ per month before insurance; monitoring adds cost.
Check reputable U.S. pharmacies, manufacturer coupons, or discount cards for lower costs. Telehealth services may bundle visits and prescriptions at competitive prices.
Legal status and U.S. regulations
- Approval status: cyproterone acetate and Diane 35 are not FDA-approved for marketing in the United States.
- Importation: the FDA generally prohibits importation of non-approved drugs. In limited cases, the FDA personal importation policy may allow small quantities for personal use, but it is discretionary, restricted, and not guaranteed. Customs may detain shipments.
- U.S.-available options: combined oral contraceptives and other alternatives listed above require a valid prescription in the U.S.
- Age and smoking: for estrogen-containing contraceptives, smoking at age 35+ is contraindicated because of clot and cardiovascular risks.
- Pregnancy protections: medications with teratogenic potential (e.g., isotretinoin) are subject to special programs like iPLEDGE; two forms of contraception or documented abstinence are mandated during therapy.
- Telemedicine: many states allow telehealth prescribing of oral contraceptives; state laws vary regarding pharmacist-prescribed contraception.
Always verify legality and safety with a licensed U.S. clinician and pharmacist before attempting to obtain or use Diane 35 in the United States.
Frequently asked questions
Does Diane 35 treat PCOS?
It addresses androgen-related symptoms like acne and hirsutism and can regulate bleeding patterns. It does not cure PCOS. Metabolic aspects often need separate treatment (diet, exercise, metformin when appropriate).
How quickly will skin improve?
Some improvement may be seen after 2-3 months, with more consistent results by 4-6 months.
Is it safe during breastfeeding?
Combined estrogen-containing pills are generally avoided early postpartum and while breastfeeding due to reduced milk supply and clot risk. Progestin-only methods are preferred in that setting.
Can I drink alcohol while using it?
Moderate alcohol has no direct pharmacologic interaction, but heavy use raises liver risk. Always use responsibly.
What if I need surgery or will be immobilized?
Combined hormonal contraceptives may be paused several weeks before major surgery or prolonged immobilization to reduce clot risk. Ask your surgeon or prescriber for a plan.
