| pyrrolizidine alkaloids | <chemical> Alkaloids found in various species of senecio and other plants. There are at least ten different chemicals, many of them hepatotoxic, teratogenic, and carcinogenic. The plants may cause damage in grazing herds, but no longer have medical use. Pharmacological action: carcinogens. (12 Dec 1998) |
|---|---|
| solanaceous alkaloids | Alkaloids, mainly tropanes, elaborated by plants of the family solanaceae, including atropa, hyoscyamus, mandragora, nicotiana, solanum, etc. Some act as cholinergic antagonists; most are very toxic; many are used medicinally. (12 Dec 1998) |