SB-Glic XR 30 Gliclazide Phenylbutazone
ModeratePhenylbutazone is a painkiller and antirheumatic. The leaflet for Glicron CR (gliclazide) names it, along with ibuprofen, in a list of medicines that can change how the diabetes medicine works. The same list includes ACE-inhibitors such as captopril or enalapril, and antifungals such as miconazole and fluconazole. It also includes H2 receptor antagonists (used for stomach or duodenum ulcers), monoamine oxidase inhibitors (used for depression) and any medicine containing alcohol. The leaflet then moves on to a separate group of medicines that can weaken Glicron CR's blood-sugar-lowering effect, so that blood sugar rises. Phenylbutazone is not part of that second group. If you take gliclazide, tell your doctor or pharmacist before using phenylbutazone.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.