
Rufinamide
23 June, 2023
Salsalate
23 June, 2023Safyral
Generic name:
Ethinylestradiol, levonorgestrel, and levomefolate calcium
Drug class:
Combined oral contraceptive with folate supplementation
Dosage form:
Oral tablets
Root of administration:
Oral
Dose:
One active tablet containing ethinylestradiol 30 µg, levonorgestrel 150 µg, and levomefolate calcium 0.451 mg once daily for 21 consecutive days followed by a 7-day tablet-free interval. Varies by indication; consult label.
Mechanism of action:
Ethinylestradiol and levonorgestrel inhibit ovulation by suppressing the hypothalamic-pituitary-gonadal axis, increase cervical mucus viscosity, and alter endometrial lining. Levomefolate calcium provides active folate to reduce the risk of folate deficiency in reproductive-aged women.
Drug usage cases:
- Prevention of pregnancy
- Reduction of folate deficiency in women of reproductive age
- Regulation of menstrual cycles
- Acne vulgaris (off-label)
- Hirsutism (off-label)
- Premenstrual syndrome management (off-label)
Drug contra indications:
- Thrombophlebitis or thromboembolic disorders (e.g., DVT, PE)
- Known thrombophilic conditions (e.g., protein C or S deficiency)
- History of cerebrovascular or coronary artery disease
- Uncontrolled hypertension (≥160/100 mmHg)
- Migraine with focal aura
- Current or history of breast carcinoma or estrogen-dependent tumors
- Severe hepatic impairment or liver tumors
- Cholestasis of pregnancy or previous oral contraceptive–related cholestasis
- Undiagnosed abnormal uterine bleeding
- Hypersensitivity to any component
- Pregnancy
- Polycythemia
- Bacterial endocarditis
- Prolonged immobilization with risk of thrombosis
Side effects:
- Nausea and vomiting
- Headache and migraine
- Breast tenderness and enlargement
- Weight changes
- Irregular uterine bleeding or spotting
- Menstrual disorders
- Mood changes, depression
- Libido changes
- Bloating and fluid retention
- Acne and other skin reactions
- Vaginal candidiasis
- Hypertension
- Thromboembolic events (rare but serious)
- Gallbladder disease
- Elevated liver enzymes
- Allergic reactions (rash, urticaria)
Warnings:
- Increased risk of venous and arterial thromboembolism, especially in smokers over 35 years
- Monitor blood pressure regularly
- Discontinue if signs of thrombotic events occur (e.g., leg pain, chest pain, dyspnea)
- Caution in migraine sufferers; discontinue if aura develops
- May worsen hepatic function in patients with liver disease
- Use with caution in diabetes due to potential effects on glucose tolerance
- Risk of chloasma; avoid excessive sun exposure
- Monitor for depression and mood changes
- May affect lipid metabolism
- Potential impact on bone mineral density with long-term use
- Drug interactions with enzyme inducers and inhibitors (e.g., rifampicin, anticonvulsants)
- Reduced contraceptive efficacy with certain antibiotics and herbs (e.g., St. John’s Wort)
Use during pregnancy or breastfeeding:
Use in pregnancy: Contraindicated. Discontinue immediately if pregnancy is confirmed; no therapeutic benefit and potential fetal risk. Use in breastfeeding: Not recommended. May reduce milk production and pass into breast milk; consider alternative contraception or delay use until after weaning.



