how much boron can you have daily
The upper limits for boron depend on your age and gender and are as follows: (3) 1  1â3 years: 3 milligrams/day. 2  4â8 years: 6 milligrams/day. 3  9â13 years: 11 milligrams/day. 4  14â18 years: 17 milligrams/day. 5  Adults 19â50 years: 20 milligrams/day. 6  Pregnant women : 17â20 milligrams/day. 7  Women who are breastfeeding: 20â25 milligrams/day.