What is essential information on a medication label?

Essential information on a medication label primarily includes the expiration date and dosage instructions. The expiration date is crucial because it indicates the timeframe in which the medication remains effective and safe to use. Using medication past its expiration date can lead to decreased efficacy and potential safety issues.

Dosage instructions are vital for ensuring the correct amount of medication is taken at the right intervals, as they directly affect how well the medication will work and minimize the risk of side effects or overdose. Proper understanding and adherence to these instructions are fundamental for effective treatment.

While brand name and manufacturer information can be important, particularly for distinguishing between different products or when recalling medications, they don't provide direct guidance on how to safely and effectively use the medication, which is why the expiration date and dosage instructions take precedence in this context. Color, shape, and size of the pills are not essential pieces of information; while they may aid in identifying the medication visually, they do not inform about safety or usage.