Alfacalcidol is a synthetic vitamin D analogue (1alpha-hydroxyvitamin D3) that undergoes rapid hepatic conversion to active calcitriol, used to manage renal osteodystrophy, osteoporosis and other disorders of calcium and bone metabolism. Simson Pharma's Alfacalcidol reference standard and impurities support stability testing of this light- and oxidation-sensitive vitamin D therapy.

Simson Pharma Global Ltd. (UK) and Simson Pharma Global LLC (USA) supply high-quality Alfacalcidol Reference Standards, pharmacopoeial reference materials, and its related impurities to pharmaceutical manufacturers, CROs, analytical laboratories, universities, and regulatory organizations worldwide. To service the Europe and America market efficiently, Simson Pharma Limited has set up Simson Pharma Global Ltd. in United Kingdom and Simson Pharma Global LLC in USA respectively.