sells everything individually for this cleanse. Look around maybe others have it also. Just be sure to at least get these dosages. Make sure you buy enough of either to do a full 30 days. Anything else is just not long enough.
By doing a cleanse you will see if any parasites are present. If you find parasites than you will have to stay with it for a long time.
Later on I just started making my own paracides as this is much cheaper.