Ergocalciferol 1.25 mg capsules are prescribed. How many international units does one capsule contain?

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Study for the Foundation Year Pharmacy – Clinical Practice Test. Prepare with detailed questions, step-by-step explanations, and test format insights. Enhance your readiness and confidence!

Multiple Choice

Ergocalciferol 1.25 mg capsules are prescribed. How many international units does one capsule contain?

Explanation:
Vitamin D potency is given in international units, with the standard conversion that 1 microgram (µg) of vitamin D equals 40 IU. The capsule contains 1.25 mg, which is 1250 µg. Multiply by 40 IU/µg: 1250 × 40 = 50,000 IU. So one capsule contains 50,000 IU.

Vitamin D potency is given in international units, with the standard conversion that 1 microgram (µg) of vitamin D equals 40 IU. The capsule contains 1.25 mg, which is 1250 µg. Multiply by 40 IU/µg: 1250 × 40 = 50,000 IU. So one capsule contains 50,000 IU.

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