PA's Not Only in Oregano
Pyrrolizidine alkaloids (PA) are secondary plant materials that are mainly formed by certain plants, e.g. Senecio jacobaea, and serve to protect against predators. What protects one may harm another. Thus, certain PA's can damage the liver and should therefore be minimized according to the ALARA principle. A correspondingly increased risk exists, for example, with products such as tea, herbs, spices and food supplements, especially their herbal raw materials.
Tropane alkaloids and ergot alkaloids should also be monitored for the above-mentioned products.