Zita 50 mg contains sitagliptin, a commonly used medicine for type 2 diabetes. The same medicine (sitagliptin 50 mg) is available under different brand names, so you can safely switch to another brand, such as Sitabet 50mg tablet, Sitapride 50mg tablet, Alsita 50mg tablet, Sitaday 50mg tablet, Sitacip 50mg tablet, Sitara 50mg tablet, and Istavel 50mg tablet, but only after confirming with your doctor. Do not stop your diabetes medicine suddenly, as it can increase your blood sugar levels; instead, ask your doctor or pharmacist for an equivalent substitute with the same composition and dose.