When is it recommended to take medication marked with "AC"?

Medications marked with "AC," which stands for "ante cibum" in Latin, are recommended to be taken before meals. This instruction is based on the pharmacological principle that certain medications are best absorbed in the stomach when it is empty, as food can sometimes interfere with the absorption of the drug, potentially decreasing its effectiveness. Taking these medications before meals ensures that they have the optimal opportunity to work effectively in the body without the interference that food may introduce.

In contrast, medications that need to be taken after meals or with meals have different absorption profiles, often requiring food to either enhance absorption or to mitigate potential side effects. Taking medications at bedtime is also a separate consideration, as it involves timing that is different from meal-related instructions.