Which compound is used in contraceptive pills?

Question

Which compound is used in contraceptive pills?

1. A. Cholecalciferol
2. B. Levonorgestrel (Correct answer)
3. C. Vanlaflexine
4. D. Cetrizine

Correct Answer

Option B — Levonorgestrel

Detailed Solution & Explanation

The correct answer is Levonorgestrel.

Key Points

• Levonorgestrel is a synthetic progestogen (progestin) used in contraceptive pills, including combined oral contraceptives, progestin-only pills and emergency contraceptive pills.
• It prevents pregnancy chiefly by inhibiting or delaying ovulation, and additionally by thickening the cervical mucus so that sperm cannot pass easily, and by altering the endometrium.
• In India it is marketed for emergency contraception and is distributed under the National Family Planning Programme.
• The distractors belong to entirely different drug classes, which is what makes this a pure recall question: cholecalciferol is Vitamin D3, used for bone health and calcium absorption; venlafaxine is an antidepressant of the SNRI class; and cetirizine is an antihistamine used for allergies.

Exam Tip

• build a short table of common drugs and their therapeutic class, since science questions in BPSC are usually about matching a molecule to its use rather than its chemistry.

प्रश्न (हिन्दी में)

गर्भनिरोधक गोलियों में किस यौगिक का उपयोग किया जाता है?

1. A. कोलेकैल्सीफेरोल
2. B. लेवोनोर्गेस्ट्रेल
3. C. वैनलाफ्लेक्सिन
4. D. सेट्रीजीन