In 1993, the European Scientific Committee for Food determined an acceptable magnesium intake range for adults of 150–500 milligram (mg) per day (52).

 

Based on the results of balance studies the U.S. Food and Nutrition Board established a recommended dietary allowance (RDA) for magnesium in 1997 (4):

 

Life Stage	Age	Males: (mg/day)	Females: (mg/day)
Infants	0–6 months	30 (AI)	30 (AI)
Infants	7–12 months	75 (AI)	75 (AI)
Children	1–3 years	80	80
Children	4–8 years	130	130
Children	9–13 years	240	240
Adolescents	14–18 years	410	360
Adults	19 - 50 years	400	310
Adults	51 years and older	420	320
Pregnancy	18 years and younger	-	400
Pregnancy	19-30 years	-	350
Pregnancy	31 years and older	-	360
Breast-feeding	18 years and younger	-	360
Breast-feeding	19-30 years	-	310
Breast-feeding	31 years and older	-	320

For a detailed overview of recommended daily intakes (PRIs/RDAs) of vitamins and minerals for adults derived from different countries and organizations see PDF.