13 Surprising Causes of Constipation
Blood pressure and allergy meds
Constipation can be a side effect of some common drugs used to treat high blood pressure, such as calcium channel blockers and diuretics.
Diuretics, for instance, lower blood pressure by increasing urine output, which flushes water from your system. However, water is needed to keep stools soft and get them out of the body.
Antihistamines used to treat allergy symptoms can be a problem too.