The over-the-counter (OTC) medication aisle seems stable, but the products within it are constantly evolving. Manufacturers may change formulas for various reasons. These include new scientific findings, updated regulatory guidance from the FDA, efforts to improve effectiveness, or responses to consumer preferences. These changes can sometimes be subtle, but they can impact how a medication works or who should use it. Being aware of these shifts is important for making informed health decisions. Here are seven common OTC medications or categories that have seen significant formula changes in recent years.
