Medicines That Can Cause Constipation

Many prescription and nonprescription medicines can cause constipation. Examples include:

• Antacids.
• Antidepressants.
• Some blood pressure medicines.
• Cold medicines (antihistamines).
• Calcium and iron supplements.
• Narcotic pain medicines.

If you think that your constipation is caused by a medicine:

• For prescription medicines, call the doctor who prescribed it to see whether you should stop taking the medicine or take a different one. An appointment may not be needed.
• For nonprescription medicines, stop taking the medicine. Call your doctor if you feel you need to still take the medicine.

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