If your symptoms do not improve within a few days, or if they become worse, check with your doctor.
It is very important that your doctor check you at regular visits for any blood problems that may be caused by this medicine.
Chloramphenicol may cause blood problems. These problems may result in a greater chance of infection, slow healing, and bleeding of the gums. Therefore, you should be careful when using regular toothbrushes, dental floss, and toothpicks. Dental work, whenever possible, should be done before you begin taking this medicine or delayed until your blood counts have returned to normal. Check with your medical doctor or dentist if you have any questions about proper oral hygiene (mouth care) during treatment.
For diabetic patients:
This medicine may cause false test results with urine sugar tests. Check with your doctor before changing your diet or the dosage of your diabetes medicine.