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What are the risks of taking fiber supplements?

There are very few risks with taking fiber supplements in recommended doses. However, if not taken with adequate fluid intact, they may increase constipation rather than help relieve it.
If you have narrowing of your esophagus or intestines, do not take fiber supplements as there is risk of choking or obstruction. If you do not take supplements with sufficient water, there is a risk the supplement could swell in your throat or esophagus and cause choking. Additionally, there is risk of constipation if you do not drink enough water while taking supplements. You should not take these supplements if you have difficulty swallowing.

It is possible that fiber supplement use will delay or reduce how your body absorbs other medications and nutrients from food. It may be good practice to take other drugs anywhere from one to four hours after you have taken fiber supplements. Though rare, there is risk of an allergic reaction. Stop taking the supplements immediately and seek medical help if you experience allergy symptoms such as hives, rash, itching, vomiting, chest pain, trouble breathing, or trouble swallowing.
 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.