Microstad (Ethinylestradiol, Levonorgestrel)

Ethinylestradiol, the active ingredient in Microstad, is a combined estrogen‑progestogen oral contraceptive presented as an oral tablet for oral use. It is used to prevent pregnancy in women of reproductive age. GNH USA supplies Microstad as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Microstad, a combined hormonal contraceptive, acts on the reproductive endocrine system to prevent pregnancy. - Contraception: provides reliable prevention of pregnancy when taken as prescribed. - Menstrual cycle regulation: helps establish a more predictable menstrual pattern. - Dysmenorrhea management: can reduce menstrual pain associated with ovulatory cycles.

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

Common Side Effects: - Nausea: mild to moderate stomach upset, especially during the first cycles. - Breast tenderness: temporary swelling or discomfort of the breasts. - Headache: occasional mild to moderate headaches. - Weight fluctuation: slight increase or retention of fluid. - Mood changes: mild irritability or mood swings. - Breakthrough bleeding: spotting between periods, especially early in therapy.

Serious or Rare Side Effects: - Deep vein thrombosis: blood clot formation in the legs or pelvis. - Pulmonary embolism: clot migration to the lungs, a medical emergency. - Stroke or transient ischemic attack: rare cerebrovascular events. - Myocardial infarction: rare heart attack, particularly in high‑risk women. - Severe allergic reaction: rash, swelling, or anaphylaxis. - Hepatic dysfunction: abnormal liver function tests or jaundice.

Before prescribing Microstad, clinicians should evaluate individual risk factors and counsel patients on safe use. - Medical assessment: screen for history of thromboembolic disease, cardiovascular disorders, or uncontrolled hypertension. - Smoking status: avoid use in women over 35 who smoke, due to increased clot risk. - Liver function: assess hepatic health, as impaired metabolism can alter drug levels. - Pregnancy testing: confirm non‑pregnant status before initiation. - Store at ambient temperature: keep below 25°C, in the original packaging, protected from moisture and light.

Microstad can interact with several medicines that affect hormone metabolism or increase clot risk.

Major Interactions (Avoid): - Enzyme‑inducing anticonvulsants (e.g., carbamazepine, phenytoin, phenobarbital): may markedly reduce contraceptive efficacy. - Rifampicin: strong inducer of hepatic enzymes, decreasing hormone levels. - Certain HIV protease inhibitors: can alter hormone concentrations, affecting effectiveness.

Moderate Interactions (Monitor Closely): - Antibiotics such as tetracycline or metronidazole: may slightly lower hormone levels, requiring backup contraception. - Antifungal agents (e.g., fluconazole): can increase hormone exposure, potentially enhancing side effects. - St. John’s wort: herbal inducer that may reduce contraceptive effectiveness.