Product image of Mistra (Dienogest, Ethinylestradiol) supplied by GNH India

Mistra

Active Ingredient:
Dienogest, Ethinylestradiol
Origin:
EU

Mistra (Dienogest, Ethinylestradiol)

Dienogest/Ethinylestradiol, the active ingredient in Mistra, is a combined oral contraceptive presented as an oral tablet for oral use. It works by inhibiting ovulation and inducing cervical mucus changes to prevent fertilisation, providing reliable pregnancy prevention for women of reproductive age. The formulation is approved for use in the European Union and follows standard dosing regimens under medical supervision.

GNH India supplies Mistra as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide with a focus on quality assurance and regulatory compliance.

Manufacturer / TM Owner

Gedeon Richter Plc.

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Indications & Clinical Uses

Mistra is a combined oral contraceptive that acts on the hormonal regulation of the menstrual cycle to prevent pregnancy.

  • Contraception: prevents unintended pregnancy in women of childbearing potential.
  • Menstrual cycle regulation: helps achieve regular monthly bleeding patterns.
  • Dysmenorrhea management: reduces menstrual pain and associated symptoms.

How It Works

  • Mistra combines dienogest, a progestogenic agent, with ethinylestradiol, an estrogen, to suppress the hypothalamic‑pituitary‑ovarian axis, preventing the LH and FSH surge required for ovulation. The progestogen also thickens cervical mucus and the estrogen component stabilises the endometrial lining, creating conditions that hinder fertilisation and implantation.

Side Effects

Mistra may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

  • Nausea: mild to moderate stomach upset.
  • Headache: tension‑type or migraine‑like pain.
  • Breast tenderness: temporary swelling or discomfort.
  • Breakthrough bleeding: spotting between periods.
  • Weight gain: modest increase in body weight.
  • Mood changes: irritability or mood swings.

Serious or Rare Side Effects

  • Venous thromboembolism: deep‑vein clot or pulmonary embolism.
  • Arterial thrombosis: heart attack or stroke.
  • Hepatic adenoma: benign liver tumor.
  • Severe hypertension: sudden rise in blood pressure.
  • Allergic reaction: rash, swelling, or anaphylaxis.
  • Visual disturbances: sudden loss of vision or eye pain.

Precautions & Warnings

Before starting Mistra, patients should consider several safety aspects.

  • Assess cardiovascular risk: evaluate history of clotting disorders, smoking, or hypertension.
  • Review liver function: avoid use in active liver disease or tumors.
  • Check for estrogen‑dependent cancers: contraindicated in known or suspected cases.
  • Monitor for migraine with aura: increased stroke risk.
  • Counsel on smoking cessation: especially for women over 35.
  • Store at below 25°C: keep in the original pack, protect from moisture and direct sunlight.

Avoid Interactions

Mistra can interact with other medicines, altering its effectiveness or increasing risk.

Major Interactions (Avoid)

  • Strong CYP3A4 inducers (e.g., rifampicin, carbamazepine): may reduce contraceptive efficacy.
  • Anticoagulants (e.g., warfarin): may enhance anticoagulant effect.

Moderate Interactions (Monitor Closely)

  • Antiepileptics (e.g., phenytoin, phenobarbital): may modestly lower hormone levels.
  • Antiretrovirals (e.g., efavirenz): may decrease contraceptive reliability.
  • Herbal supplements (e.g., St. John’s wort): potential reduction in hormone concentrations.

Frequently Asked Questions

Mistra is a combined oral contraceptive containing dienogest and ethinylestradiol, prescribed to prevent pregnancy in women of reproductive age. It may also be used to regulate menstrual cycles and manage dysmenorrhea, under medical supervision.

The combination works by suppressing the hypothalamic‑pituitary‑ovarian axis, preventing the mid‑cycle surge of luteinising hormone and follicle‑stimulating hormone, thereby inhibiting ovulation. Additionally, it thickens cervical mucus and alters the endometrial lining, creating an environment hostile to fertilisation and implantation.

The specific dosing regimen for Mistra is determined by the prescribing healthcare professional. Typically, combined oral contraceptives are taken once daily for a 21‑day active tablet phase followed by a hormone‑free interval, but the exact schedule should be confirmed with the prescriber.

Mistra is intended for use only when pregnancy is not desired; it should be discontinued if pregnancy occurs. Safety during pregnancy has not been established, and the product is generally not recommended for breastfeeding women without medical advice, as hormonal exposure may affect milk production.

To place an order, submit an enquiry on the product page at gnhindia.com, specifying the required quantity of Mistra. GNH India supplies hospitals, pharmacies and procurement teams across international markets, and will request verification of trade or institutional credentials. The team then replies with pricing, availability, shipping details and any necessary import documentation.

Mistra contains the progestogen dienogest combined with ethinylestradiol, offering a low‑dose estrogen component and a progestogen with a favorable bleeding profile. Compared with older formulations that use levonorgestrel or norethisterone, dienogest may provide better cycle control and lower androgenic side effects, though efficacy in preventing pregnancy remains comparable across approved combined oral contraceptives.

Store Mistra at below 25 °C in its original blister pack, protecting it from moisture and direct sunlight. Keep the tablets out of reach of children and do not use them after the expiration date printed on the packaging. No refrigeration is required for this oral tablet.

Mistra is taken orally, usually once each day at the same time, with or without food. The typical regimen involves a series of active tablets followed by a hormone‑free interval, after which a new pack is started. Patients should follow the prescribing clinician’s instructions for the exact schedule.

Serious but rare risks include venous thromboembolism, arterial thrombosis, myocardial infarction, stroke, and hepatic adenoma. Women with a history of clotting disorders, smoking, hypertension, or certain cardiovascular conditions should be evaluated carefully before initiating therapy. Immediate medical attention is required if symptoms such as chest pain, leg swelling, or severe headache occur.

Mistra is contraindicated in women with known or suspected pregnancy, active or past thromboembolic disease, uncontrolled hypertension, certain liver tumors, or a history of estrogen‑dependent malignancies. It should also be avoided in individuals who are breastfeeding without medical guidance, and in those with known hypersensitivity to dienogest, ethinylestradiol, or any tablet excipients.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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