Lecture 18- Medicinal, Poisonous plants and Allergies OR- The Good, the Bad, and the Ugly Ch 19, Ch 21

1. History of drugs from plants
   1. Discorides- De Materia Medica
   2. The age of Herbals
   3. Doctrine of Signatures
2. Novel Chemicals in plants- Secondary Metabolism
   1. Survival or by accident
3. Human dependence of drugs from plants
4. Plant Based Drugs in Use
   1. Alkaloids
   2. Glycosides
   3. Future possibilities
   4. The problem of Ownership
   5. Potential danger of Herbal medicine
5. Poisonous Plants
   1. Alkaloids
   2. Cardiac glycosides
   3. Others
   4. Milder-Poisonous but not lethal
6. Allergic reactions to plants and foods
   1. Immune reactions-Antigens and antibodies
   2. Physiological responses
   3. examples