3 doctors weighed in:

Does gas-x cause constipation?

3 doctors weighed in
Dr. Heidi Fowler
Psychiatry
2 doctors agree

In brief: According to

Drugs. Com there are no know side effects of simethicone, which is gas x's active ingredient.

In brief: According to

Drugs. Com there are no know side effects of simethicone, which is gas x's active ingredient.
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