What is the common trade name for Metformin?

Metformin, a medication commonly used in the management of type 2 diabetes, is widely recognized by its trade name, Glucophage. This name directly reflects its function in glucose management, as "Glucophage" translates to "glucose eater" in Greek, highlighting its role in decreasing liver glucose production and improving insulin sensitivity.

The other names mentioned do not relate to Metformin. Cardizem is a brand name for diltiazem, a medication used to treat hypertension and angina. Zestril is known as lisinopril, an ACE inhibitor used for heart failure and hypertension. Phenergan, on the other hand, is the trade name for promethazine, which is primarily an antihistamine used to treat allergies and nausea. Each of these medications serves different therapeutic purposes, underscoring why Glucophage is the accurate answer for Metformin.