3 doctors weighed in:

What vitamins cause constipation?

3 doctors weighed in
Dr. Troy Reyna
Surgery - Pediatric
1 doctor agrees

In brief: Iron

Vitamins with excess iron and some with lots of calcium.

In brief: Iron

Vitamins with excess iron and some with lots of calcium.
Dr. Troy Reyna
Dr. Troy Reyna
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Dr. Robert Lang
Internal Medicine - Endocrinology

In brief: Few if any

However, calcium, which is really a mineral, not a vitamin, can frequently cause constipation.
If calcium is needed, take it with magnesium which can offset the constipation. Most people benefit from taking half as much magnesium as they do calcium. Do not take magnesium if you have moderate to severe kidney failure.

In brief: Few if any

However, calcium, which is really a mineral, not a vitamin, can frequently cause constipation.
If calcium is needed, take it with magnesium which can offset the constipation. Most people benefit from taking half as much magnesium as they do calcium. Do not take magnesium if you have moderate to severe kidney failure.
Dr. Robert Lang
Dr. Robert Lang
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