Hastina 21 (Drospirenone, Ethinylestradiol)

Hastina 21 is indicated for several hormonal management purposes in women of child‑bearing potential.

• Primary contraception for preventing pregnancy when taken as directed.
• Regulation of irregular menstrual cycles and reduction of cycle‑related symptoms.
• Management of moderate acne that is responsive to hormonal therapy.
• Decrease in the risk of ovarian cyst formation associated with anovulatory cycles.
• Treatment of premenstrual dysphoric disorder symptoms in selected patients.

Like other combined oral contraceptives, Hastina 21 may cause a range of side effects, most of which are mild and transient.

Common

• Nausea or mild stomach upset.
• Breast tenderness or enlargement.
• Headache, including tension‑type.
• Spotting or breakthrough bleeding between periods.
• Weight fluctuations or fluid retention.

Serious

• Deep vein thrombosis or other blood‑clot events.
• Severe hypertension or sudden increase in blood pressure.
• Allergic reactions such as rash, itching, or swelling of the face and throat.

Before prescribing Hastina 21, clinicians should evaluate patient history and risk factors to ensure safe use.

• Do not use in women with a history of thromboembolic disorders, stroke, or myocardial infarction.
• Avoid if you are pregnant, suspect pregnancy, or are breastfeeding.
• Caution in patients with uncontrolled hypertension, diabetes with vascular disease, or liver dysfunction.
• Smoking more than 15 cigarettes per day increases cardiovascular risk, especially in women over 35.
• Review any personal or family history of hormone‑dependent cancers before initiating therapy.
• Consider alternative contraception if you have migraine with aura.

Hastina 21 can interact with several medications, affecting its efficacy or safety profile.

Avoid

• Strong enzyme inducers such as rifampin, carbamazepine, phenytoin, and St John’s wort.
• Certain antiviral agents (e.g., efavirenz) that reduce plasma hormone levels.
• Antifungal medications like griseofulvin that increase hormone metabolism.

Use with caution

• Anticoagulants (warfarin) – may alter INR values.
• Antidiabetic drugs – hormonal changes can affect glucose control.
• Seizure medications (phenobarbital) – may require dose adjustment.
• Certain antibiotics (e.g., clarithromycin) – may increase hormone concentrations.