If you are very sensitive and/or a bit fragile right not, why not go for very low doses and build up. With the OO (Olive-Oil) and L-cysteine, for example, take only the morning dose and half a tsp of OO. Then build up as slowly as you like. I got my L-cys and OO (Olive-Oil) from SElf-Health Enterprises.
A very bespoke approach is to use homeopathy through a practitioner. I saw a very good NP in East Grinstead. PM me if you'd like the details. This approach, called Field Control Therapy, is pitched at your body's strength at any given time and gives support to the weaker organs at the same time. It is effective for parasites and you can be tested and treated for the ones you have. It takes time and money, though, seeing an NP regularly, but might be worth it if you are quite ill right now.