Recommended dietary allowances for Phosphorus

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  • For U.S. residents
Life Stage Group Phosphorus (mg/day)
RDA UL*
0-6 months 100 ND*
6-12 months 275 ND*
1-3 y 460 3000
4-8 y 500 3000
9-13 y 1250 4000
14-18 y 1250 4000
19-30 y 700 4000
31-50 y 700 4000
51-70 y 700 4000
>70 700 4000
Pregnancy
<18 y 1250 3500
19-30 y 700 3500
31-50 y 700 3500
Lactating
<18 y 1250 4000
19-30 y 700 4000
31-50 y 700 4000

*Abbreviations      

UL  =   Tolerable upper intake level      

ND =   Not determinable due to lack of data