Herbalism Herbal Safety & Contraindications 2

Question 1

Which organ system is most commonly the target of herb-induced toxicity in documented adverse event reports?

Accepted Answer

Liver

Answer

The liver is the most frequently implicated organ in herbal toxicity because it is the primary site of metabolism for most plant constituents.

Question 2

Bloodroot (Sanguinaria canadensis) is considered unsafe for internal use in therapeutic doses because it contains:

Accepted Answer

Sanguinarine, a cytotoxic alkaloid toxic to mucous membranes

Answer

Sanguinarine is a toxic alkaloid that damages mucous membranes and has caused serious oral lesions when used in dental products; internal use is dangerous.

Question 3

Herbs in the Apiaceae (carrot/parsley) family used topically can cause severe blistering burns when skin is exposed to sunlight due to which compound class?

Accepted Answer

Furanocoumarins (psoralens)

Answer

Furanocoumarins (psoralens) in plants like wild parsnip, giant hogweed, and rue react with UV light to cause phototoxic burns and blisters.

Question 4

Which safety category should an herbalist assign to herbs that have no documented human safety data and are used during breastfeeding?

Accepted Answer

Avoid unless clearly necessary; default to caution

Answer

When safety data for lactation is absent, the precautionary principle applies: avoid or minimize use because many plant constituents pass into breast milk.

Question 5

High doses of which fat-soluble herbal constituent can accumulate to toxic levels with prolonged use?

Accepted Answer

Fat-soluble vitamin A from high-dose sea buckthorn

Answer

Fat-soluble compounds, including preformed vitamin A (retinol) found in concentrated sea buckthorn and similar sources, can accumulate in body fat and reach hepatotoxic levels.

Herbalism Practice Test

Herbalism Practice Test

Herbalism Herbal Safety & Contraindications 2