Which plant contains pyrrolizidine alkaloids and is hepatotoxic, requiring caution in pregnancy and liver disease?

Prepare for the NPLEX II Botanical Medicine Test with comprehensive flashcards and multiple-choice questions. Each question includes hints and detailed explanations to optimize your study session. Ace your NPLEX II with confidence!

Multiple Choice

Which plant contains pyrrolizidine alkaloids and is hepatotoxic, requiring caution in pregnancy and liver disease?

Pyrrolizidine alkaloids are liver-damaging compounds found in some herbs; when absorbed, they are converted to reactive metabolites that can injure the liver and lead to serious hepatotoxicity, with higher risk in pregnancy and liver disease. Coltsfoot contains these pyrrolizidine alkaloids, particularly in the leaves and flowers, making it hepatotoxic and a herb to avoid during pregnancy and when liver function is compromised. The other plants listed do not contain pyrrolizidine alkaloids: slippery elm is a demulcent, bilberry is valued for its polyphenols but not PA-related hepatotoxicity, and valerian acts mainly on the nervous system with different constituents. Thus, Coltsfoot best fits the description.

Pyrrolizidine alkaloids are liver-damaging compounds found in some herbs; when absorbed, they are converted to reactive metabolites that can injure the liver and lead to serious hepatotoxicity, with higher risk in pregnancy and liver disease. Coltsfoot contains these pyrrolizidine alkaloids, particularly in the leaves and flowers, making it hepatotoxic and a herb to avoid during pregnancy and when liver function is compromised. The other plants listed do not contain pyrrolizidine alkaloids: slippery elm is a demulcent, bilberry is valued for its polyphenols but not PA-related hepatotoxicity, and valerian acts mainly on the nervous system with different constituents. Thus, Coltsfoot best fits the description.

More practice questions