Question

which of the following is a side effect of biguanides? hyperglycemia hypoglycemia rapid heart rate weight loss

Explanation:

Biguanides (e.g., metformin) are used for diabetes. Hyperglycemia is high blood sugar, which biguanides treat, not cause. Hypoglycemia (low blood sugar) is rare with biguanides alone. Rapid heart rate isn’t a typical side effect. Weight loss is a known side effect of biguanides as they can reduce appetite and affect glucose metabolism.

Answer:

Weight loss