By which routes can insulin be administered? (Select All that Apply.)

A. Increase insulin production by the pancreas: This is incorrect because incretin enhancers don't increase the production of insulin itself but rather enhance the secretion of insulin in response to meals.
B. Increase insulin secretion from the pancreas: This is correct. Incretin enhancers (e.g., DPP-4 inhibitors or GLP-1 receptor agonists) work by amplifying the effect of incretins, which are hormones that increase insulin secretion in response to meals.
C. Decrease the amount of glucagon produced by the pancreas: This is partly true but not the primary mechanism. Incretins do reduce glucagon release, which helps lower blood glucose, but the main action is to increase insulin secretion.
D. Decrease the uptake of glucose by the body's cells: This is incorrect. Incretin enhancers do not work by decreasing glucose uptake by cells; rather, they enhance insulin secretion which in turn helps cells to uptake glucose.

A. "I can quit taking this medication when I feel better.": Incorrect. Antibiotics should be taken for the full prescribed duration to ensure the infection is fully treated and to prevent resistance.
B. "I cannot smoke while taking this medication.": Incorrect. While smoking cessation is generally beneficial for health, it is not specifically contraindicated with clarithromycin.
C. "I cannot drive while taking this medication.": Incorrect. Clarithromycin does not typically impair the ability to drive.
D. "I need to take this medication until it is gone.": Correct. This statement indicates understanding that the entire course of antibiotics should be completed to ensure effectiveness and prevent resistance.