A reader mentioned FC-Cidal and Dysbiocide in a message. They were prescribed by a well known CFS physician. As usual, I am curious to know about such.
FC-Cidal is a product produced by Biotics Research Corporation. It contains the following:
- French Tarragon (Artemisia dracunculus) (leaf),
- ” These compounds did not affect the growth of test lactic acid-producing bacteria (Bifidobacterium adolescentis, Bif. breve, Lactobacillus acidophilus and Lact. casei) and Escherichia coli, whereas weak growth inhibition towards Bif. bifidum was observed.” 
- Indian Tinospora (Tinospora cordifolia) (stem & root),
- Horsetail (Equisetum arvense) (whole herb),
- Thyme (Thymus vulgaris) (leaf),
- Pau D’ Arco (Tabebuia impetiginosa) (inner bark),
- ” no adverse effects were observed on the growth of Bifidobacterium adolescentis, Bifidobacterium bifidum, Bifidobacterium infantis, Lactobacillus acidophilus, and Lactobacillus casei at 1000 microg/disk.” 
- Stinging Nettle Extract (Urtica dioica) (root),
- Olive (Olea europaea) (leaf).
- “Six bacterial strains (Lactobacillus plantarum 6907, Lactobacillus paracasei 9192, Lactobacillus casei, Bifidobacterium lactis BO, Enterococcus faecium 32, Lactobacillus LAFTI 10) were tested… on Olive Oil and grew well 
- ” The results obtained using a selected olive sample demonstrated that bifidobacteria and one strain of L. rhamnosus (Lactobacillus GG) showed a good survival rate, with a recovery of about 10(6) CFU g(-1) after 30 days. The Lactobacillus GG population remained unvaried until the end of the experiment, while a slight decline (to about 10(5) CFU g(-1)) was observed for bifidobacteria. High viability, with more than 10(7) CFU g(-1), was observed throughout the 3-month experiment for L. paracasei IMPC2.1. ” 
Their product literature is here.
Dysbiocide is another produce produced by Biotics Research Corporation. It contains the following:
- Dill (Anethum graveolens) (seed),
- reduces lactic acid bacteria Lactobacterium buchneri 
- Stemona (Stemona sessilifolia) (root) (powder and extract),
- Wormwood (Artemisia absinthium) (shoot & leaf) (extract),
- Java Brucea (Brucea javanica) (fruit) (powder & extract),
- Chinese Pulsatilla (Pulsatilla chinensis) (rhizome) (powder & extract),
- Jamaic a Quassia (Picrasma excelsa) (bark) (extract),
- Cutch Tree (Acacia catechu) (heartwood & bark) (powder & extract),
- inhibited …. L. acidophilus. 
- Hedyotis (Hedyotis diffusa) (aerial part) (powder & extract),
- Yarrow (Achillea millefolium) (leaf & flower) (extract).
- Reduces Lactobacillus rhamnosus 
I dislike combinations because they usually contain good and bad items. Second, it is hard to rotate when you are “taking the kitchen sink”.
I did a spot check and annotated the items above. Dysbiocide appears to be contra-productive for our goals. FC-Cidal has two which do not effect lactobacillus, bifidobacteria and do impact other organism, and one that could be inferred to encourage the growth of the same.
I would suggest rotating between:
- French Tarragon (Artemisia dracunculus) (leaf) .. or/and other Artemisia
- Pau D’ Arco (Tabebuia impetiginosa)
- Olive (Olea europaea) (leaf).
Instead of mixture containing herbs and spices that we do not know what their impact may be.