Table 4.

US Endocrine Society 2011 recommended dietary allowance 69

Life stage group	RDA (IU)	Upper limit
Adults (18 years and above)	1500-2000	10,000
Pregnancy and lactation	1500-2000	10,000
Children and adults at risk*	2-3 times the normal requirement for their age

*Obesity, HIV infection, on glucocorticoids, anticonvulsant, antifungal and antiviral therapy. A desirable range is between 30 and 60 ng/mL, although levels up to 100 ng/mL are unlikely to result in Vitamin D toxicity. Except in granuloma disorders, wherein it is advisable to maintain the serum levels of 25(OH) D up to >30 ng/mL. RDA: Recommended dietary allowance