Do not take Foseal 800 mg tablets if:

• You have low levels of phosphate in your bloodstream. Your doctor will perform a test to check this
• You have a bowel obstruction
• You are allergic to the active ingredient Sevelamer or any other ingredients of the medicine

You should talk to your doctor before taking the Sevelamer tablet if you have swallowing problems, movement problems, active bowel inflammation, and have undergone major stomach surgery. The drug is not recommended for use in children. Due to either kidney problems or dialysis treatment, some patients may develop low or high calcium levels in the blood. Since Foseal 800 does not contain calcium, your doctor might prescribe treatment to cure calcium problems. Sometimes, a low amount of vitamin D can also occur in some patients. Therefore, your doctor may monitor Vitamin D levels in the blood and prescribe an additional vitamin D tablet if required. Patients who have not been taking multivitamins supplements can develop low vitamin A, E, K, and folic acid levels in their bloodstream. Therefore, your doctor may check these levels and vitamin supplements as per need. 

Let your doctor know if you are taking other medicines. Foseal 800 tablets should not be used at the same time as ciprofloxacin antibiotics. If you are taking medications for epilepsy, heart rhythm disorders, you should consult your doctor when taking a Sevelamer formulation. The effects medicines such as mycophenolate, cyclosporin, and tacrolimus primarily used to suppress the immune system may be reduced Sevelamer use. Thyroid hormone deficiency may be observed in certain people taking medicines to treat thyroid hormone levels and Foseal 800. If you are taking medicine to treat gastroesophageal reflux disorder, heartburn, or gastric ulcers, you should inform your doctor. This Sevelamer formulation contains lactose. So, if your doctor has told you that you have an intolerance to some sugars, please let your doctor before taking this medicinal preparation.

The most common adverse reactions include nausea, vomiting, diarrhoea, dyspepsia, constipation, flatulence, and abdominal pain. Rarely patients may experience hypersensitivity with Sevelamer 800. Constipation may be an early sign of a blockage in your intestines; therefore, it is important to inform your doctor about this unwanted effect right away. 

You must take Foseal 800 as prescribed by your doctor. Usually, the dosing regimen is based on your serum phosphorus level. The recommended dose for adults and elderly patients is one to two tablets of 800 m with each meal, thrice a day. It is important to swallow the tablet whole without breaking or crushing it. During the initial days of the treatment, your doctor will check the phosphorus levels in your bloodstream for 2 to 4 weeks and may make dose adjustments when required to reach an adequate phosphate level. Patients taking Sevelamer formulation should stick to their prescribed diet. In case of accidental overdose, you should contact your doctor.