Which of the following is NOT true about Protopam chloride (2-PAM)?

• A. It is an antidote for organophosphate poisoning
• B. It is effective only if administered immediately
• C. It can be used for all types of pesticide poisoning
• D. It must be stored in a cool, dry place

Answer: (C)

Protopam chloride, also known as 2-PAM, is specifically an antidote for organophosphate poisoning, which is a result of exposure to certain pesticides that inhibit acetylcholinesterase, an enzyme necessary for normal nerve function. 2-PAM works by reactivating the inhibited enzyme, but it is not effective against all types of pesticide poisoning. Therefore, the statement indicating that it can be used for all types of pesticide poisoning is not true.

In contrast, the other statements are accurate. 2-PAM is indeed an antidote for organophosphate poisoning, and it must be administered quickly for it to be effective, as the window for reactivation of the enzyme decreases over time after the organophosphate binds. Additionally, proper storage conditions, such as keeping it in a cool, dry place, are recommended to maintain its efficacy.