I have been using the Dr. Dale products for years. There are a lot of options to use homeopathy and/or herbs for different issues. I like to use the homeopathic version to clear a parasite especially when someone cannot take or is sensitive to taking the herbal version. Or on some tougher cases I will use both the Bio-Tox AND the Para-Pro capsuled version so that the client is both making the environment unfriendly to the parasite and using the homeopathic frequency. Also best to take while detoxing (especially the colon) on the initial round.