Final answer:
Sulfa drugs are commonly associated with allergies and must be handled separately to avoid contamination. These medications contain sulfonamides, which many people are allergic to, necessitating careful prescription and handling.
Step-by-step explanation:
The drug that most people are allergic to and must be handled with caution, particularly to avoid contamination, is a group known as sulfa drugs. These medications contain sulfonamides, which are prescribed carefully due to the common occurrence of sulfa allergies. It's crucial to differentiate between sulfa drugs and other sulfur-containing compounds like sulfates and sulfites, which are chemically unrelated to sulfonamides and do not trigger the same hypersensitivity reactions.
Those who have a sulfa allergy may experience a range of symptoms if exposed to these drugs, and in the healthcare setting, such drugs are often handled separately to prevent cross-contamination and protect patients with sulfa allergies.