I called Dr. clarks research association concerning another product that was an all-in-one product of the walnut, woodworm and clove. I thought is was theirs. Its name is Clarkia . This product was not created or recommended by the research assoc. I had the same questions and concerns as you - I bought from the association.
What are you trying to accomplish - the parasite program? In Dr. Clarks book the cure for all cancers there is a mop up program that co-exists with the parasite program and involves L-crystein and ozonated olive oil. This mop-up kills a variety of tape worms and ascaris.
Also as an option ornthinine and arginine. Both improve the parisite program in that killing the critters ammonia is produced that are toxic to the brain. According to the book it is believed these toxins create insomnia and anxiety. These two additions help with that issue.