Duphaston is a prescription-only pill that contains the synthetic progestogen dydrogesterone. It belongs to the women’s health therapeutic class and is marketed in many countries, including Hong Kong, as a treatment for conditions that require progesterone replacement. The medication is available in a single strength of 10 mg tablets.
In Hong Kong, Duphaston is regulated by the Drug Office of the Department of Health and can be dispensed only with a physician’s prescription. The active ingredient, dydrogesterone, mimics the actions of natural progesterone, a hormone essential for normal menstrual cycles and pregnancy maintenance.
Dydrogesterone is a retro-steroid that binds selectively to progesterone receptors in target tissues such as the uterus, breast, and central nervous system. By activating these receptors, the drug reproduces the physiological effects of endogenous progesterone:
Oral ingestion leads to rapid absorption, with peak plasma concentrations typically occurring within 2 hours. The drug exhibits high oral bioavailability and is metabolised primarily by hepatic enzymes before being excreted in the urine.
Duphaston is approved in Hong Kong and many other jurisdictions for the following indications:
These approved uses are based on clinical studies demonstrating the ability of dydrogesterone to restore normal progesterone activity in the reproductive system.
Research and clinical guidelines have explored several off-label applications of dydrogesterone. While not formally approved by the Hong Kong regulatory authority, the following uses have been reported in peer-reviewed literature:
Disclaimer: Off-label use requires medical supervision and individualized risk assessment. Patients should discuss potential benefits and risks with a qualified healthcare provider before initiating therapy.
When in doubt, patients should provide their healthcare provider with a complete medication list, including over-the-counter drugs and herbal supplements.
Patients using Duphaston for hormone replacement therapy or infertility support should undergo periodic evaluation:
Regular contact with a healthcare professional ensures optimal therapeutic outcomes and early detection of adverse effects.
This article provides educational information about Duphaston and is not a substitute for professional medical advice. Treatment decisions, including use for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.
Duphaston is not indicated as a contraceptive. While it contains a progestogen, effective birth control requires a formulation specifically approved for that purpose and a dosing schedule that maintains consistent ovulation suppression.
Heavy or prolonged bleeding may signal an underlying hormonal imbalance or a rare adverse reaction. Contact your prescriber promptly; they may adjust the dose, suggest additional investigations, or switch to an alternative therapy.
St. John’s Wort is a known CYP3A4 inducer and can reduce dydrogesterone levels, potentially diminishing therapeutic effect. Discuss all herbal products with your healthcare provider before starting Duphaston.
Most women with migraine can use dydrogesterone, but if migraines are accompanied by aura, hormonal fluctuations could exacerbate symptoms. Monitor migraine patterns and seek medical advice if they worsen.
Yes, but keep the medication in its original packaging with a copy of the prescription. Some countries may require proof of medical necessity for hormonal drugs; carrying a doctor’s note can help avoid customs delays.
In most markets, a 10 mg Duphaston tablet bears the imprint “DUP 10”. Appearance may vary slightly by manufacturer, so verify the imprint against the pharmacy label.
There are no specific food prohibitions. Taking the tablet with a meal can ease gastrointestinal discomfort, but high-fat meals may delay absorption slightly, which is usually clinically insignificant.
Most women notice a more regular cycle within 1-2 months of consistent daily dosing, although the exact timeline depends on the underlying condition and individual response.
Standard workplace drug screens do not test for progestogens. However, specialized endocrine testing (e.g., for doping control) might detect synthetic progesterone metabolites; inform the testing agency if you are under medication.
Yes, dydrogesterone is marketed under various generic names. The active ingredient and dosage are identical, though tablet imprint and packaging may differ. Always obtain medication from a licensed pharmacy.
