Definition of tush. : a long pointed tooth; especially : a horse's canine.
Common causes of low blood sugar include the following: 1  Overmedication with insulin or antidiabetic pills (for example, sulfonylurea drugs) 2  Use of medications such as beta blockers, pentamidine, and sulfamethoxazole and trimethoprim (Bactrim, Septra) 3  Use of alcohol.  Missed meals.
These drugs lower blood sugar primarily by causing more of the body's own insulin to be released. Metformin lowers the amount of sugar in your blood by helping your body respond better to its own insulin. Metformin (metformin hydrochloride tablets) does not cause your body to produce more insulin.