The frequency of side effects noted when taking sevelamer is given in accordance with the classification of the World Health Organization (WHO): very often (more than 1/10), often (more than 1/100 and less than 1/10).
From the digestive system: very often - nausea, vomiting, pain in the abdominal cavity, constipation, diarrhea, indigestion; often - flatulence.
From the side of the central nervous system: very often - a headache.
From the cardiovascular system: very often - an increase or decrease in blood pressure.
From the skin: very often - itching; often - a rash.
Other: very often - pain of different locations; often pharyngitis.
In clinical practice, there was very rarely an intestinal obstruction. Side effects often occur in patients in the terminal stage of chronic renal failure.