Generic Duphaston

Common use

Duphaston contains dydrogesterone, a synthetic hormone similar to progesterone. The medication is used to restore the hormone balance when synthesis of progesterone in the body is not sufficient (sterility, abortion, premenstrual syndrome, dysmenorrhea, irregular menstruation, secondary amenorrhea, dysfunctional uterine bleeding). The medication stimulates beginning of the secretory phase in the endometrium thereby reducing the risk of endometrial hyperplasia and carcinogenesis, which increases due to estrogen.



Dosage and direction

Each condition requires special treatment and dose schedule. Follow all instructions of your doctor. To treat endometriosis take 10 mg of Duphaston two or three times a day from 5th to 25th day of your cycle. To treat infertility take 10 mg a day from 14th to 25th day of your cycle. The treatment should be done continuously for three, six and more following cycles. Contact your doctor about all details.



Precautions

Inform your doctor if you are pregnant or breastfeeding before to take this medication. Hormone replacement therapy should not be administered without a general medical examination, including pelvic examination. Your doctor may ask you to make mammogram examination regularly.



Contraindications

This medication cannot be used in individuals with hypersensitivity to Duphaston, Dubin-Johnson syndrome (an increase of conjugated bilirubin without elevation of liver enzymes), Rotor syndrome (a benign autosomal recessive bilirubin disorder).



Side effects

The most frequent adverse reactions include headache, nausea, dizziness, bloating, skin reactions (rash and itching), breast tenderness, menstrual spotting between periods



Drug interaction

Inductors of microsomal liver enzymes such as phenobarbital may accelerate the metabolism of Duphaston and weaken its effect.



Missed dose

If you forgot to take a dose contact your doctor about necessary actions.



Overdose

There is not information about possible overdose. Seek immediate medical help if you suspect overdose.



Storage

Store at room temperature between 20-25 C (68-77 F). Store away from moisture, heat, and sunlight. It is not recommended to store in a bathroom and places available for children.



Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.

Clinical Verification

Last Clinically Updated: August 15, 2026

Written By

Dr. Elena Vance, PharmD

Clinical Specialist in Neuropharmacology

Fact Checked By

Marcus Thorne, MS

Biomedical Data & FDA Label Verification

Medically Reviewed By

Dr. Arthur Campbell, MD

Board-Certified Psychiatrist (ABPN)