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Can Vitamin Supplements Cause Dry Mouth?

Jonathan Small 0 Comments Updated:

Can Vitamin Supplements Cause Dry Mouth?

Vitamins remain an essential item that we need to support our body in her natural wear and tear processes. Various food and vegetables give these vitamins as well as natural sources. Where the body does not get the required levels, vitamin supplements are typically used for this balance the deficit. In the case of dry mouth, vitamin B, vitamin B-complex, vitamin-B3, vitamin D and zinc supplements, as well as others, have been found to be helpful in relieving dry mouth.

Watch Video Below

Video Highlights:

0:15 Symptoms of Dry Mouth
0:31 Causes of Dry Mouth
1:01 Tips to Prevent Dry Mouth

However, excessive use of these supplements can cause mouth dryness. Here is how:

Vitamin D influences the absorption and metabolism of phosphorus and calcium. Extreme levels of vitamin D in the body using supplements may cause increased thirst due to the high rate of phosphorous absorption in the body, leading to thirst and dry mouth.

Unusually high intake of Vitamin B supplement may cause you dry mouth. So keep your intake of vitamin B supplement at 50 mg of niacin amide per meal, including B complex tablet and  B6 (50mg) daily.

The B-complex vitamins boost the body to produce energy from food. When there is excess vitamin B-complex in your body through supplements, the enzymes produced to aid in proper digestion and bacteria elimination increase in the blood. This causes increased dehydration and could lead to dry mouth and bad breath.  

Also, Niacin, or Vitamin B-3, produces coenzymes that help form energy from carbohydrates, proteins and fat.   According to the author of 'Whole Food Facts' Evelyn Roehl, adults who are suffering from a reduction in metabolic processes in the body should not consume more than 14 and 16 mg of vitamin B-3 supplement daily to avoid dry mouth.

High levels of zinc supplement, which can interfere with the absorption of copper in the body, can also be another cause of dry mouth, although there is insufficient evidence for this. Take 30 to 60 mg per day and do not take more than 15 mg of zinc for more than ten days without proper medical supervision.


Note that for any vitamin supplement one takes, it must be done under the watchful eyes of a medical doctor to avoid complications that is more than a dry mouth.

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