The sources of homeopathic drugs are :

1. Vegetable kingdom

2. Animal Kingdom

3. Mineral Kingdom

4. The Sarcodes

5. The Nosodes

6. Imponderabilia

Following are the two sub-sources :

1. The opnitoxin, the specific source of venoms; first suggested by Dr. Farrington.

2. The lacs – milk and milk products of several animals.
   The human milk is also employed as a drug in homeopathy.

N.B : With the development of all branches of science including medicine, many new drugs have been introduced in the pharmacology of the other school of medicine – like Adrenaline, Testosterone, Penicillin, Streptomycin, Hydrocortisone. They have been put into the field of homeopathy by clinical experiences and some proving. Attempts to have a thorough drug proving by these substances are being made by individual persons and different organizations. They can all be put in the different categories of homeopathic drug sources.