Which of the following is listed as a Class 2 supplement?

• A. Saw Palmetto
• B. Vitamin C
• C. Multivitamin
• D. Fish Oil

Answer: (A)

Supplement classifications for aircrew exist to flag items that need medical oversight before flying. Class 2 encompasses supplements that can pose risks or interact with medications used during flight, so they require evaluation by a flight surgeon before use.

Saw palmetto is listed as a Class 2 supplement because it can affect bleeding and interact with anticoagulants or antiplatelet medications, raising safety concerns in a flight environment. There have also been reports of hepatic effects in some cases, which adds to the need for medical clearance prior to flight.

The other options are generally considered safer at typical doses. Vitamin C and a standard multivitamin have minimal interaction risk in most circumstances, and fish oil is usually tolerated well, though high doses can influence bleeding time. However, they are not typically designated as Class 2 in the common lists used for aircrew.