you might have bacterial overgrowth, try prebiotic fibres such as rice bran and kefir for probiotics, remember to make fresh and use morning and just before bed.

"I took Antibiotics (paromomycin)with great result (almost all symptoms gone for 6 weeks)"

I agree with scarface101, you might have bacterial overgrowth.

Forget about Alcat and test by yourself. Eat only one thing first in the morning and see how you feel a few hours later.

For bacterial overgrowth:


Diet


According to Dr. Leo Galland, a specialist in dysbiosis related illness, the best diet to aid in the treatment of SIBO is very similar to that used to treat yeast overgrowth. This being a diet free of simple sugars and grains/cereals and low in fruit and starchy vegetables depending on individual tolerance. This diet restricts the nutrition available for bacteria in the upper GI tract to proliferate and reduces the excess alcohols and organic acids that are produced as a result of bacterial fermentation.




Anti-Microbial Treatment



There are basically two options when it comes to eradicating bacterial overgrowth, Antibiotic medication or natural Antibiotic substances. The two can be combined however and often are, to good effect. It usually takes a period of several months or more to get a bacterial overgrowth under control so the risk/benefit profile of potential treatment must be considered. For this reason the use of natural substances with fewer side-effects than medications is particularly appealing. There are a few specific medications that are commonly used in the treatment of SIBO and a huge number of natural substances that can potentially be used. We'll look at some of the most common medications and natural Antibiotics in more detail now

Antibiotic Medications:

Metronidazole, Ciprofloxacin and Neomycin are the first choices, if these fails then Tetracycline.

Herbal/Natural Antibiotics

Grapefruit Seed Extract (GSE)
Garlic (Allium sativum)
Ginger
Olive Leaf Extract
Peppermint
...

Probiotics


Another preferred method of at least partially eradicating small intestinal bacterial overgrowth employs a probiotic agent, for example, an inoculum of a lactic acid bacterium or bifidobacterium. (A. S. Naidu et al., Probiotic spectra of lactic acid bacteria , Crit. Rev. Food Sci. Nutr. 39(1):13–126 [1999]; J. A. Vanderhoof et al. [1998]; G. W. Tannock, Probiotic propertyies of lactic acid bacteria: plenty of scope for R & D , Trends Biotechnol. 15(7):270–74 [1997]; S. Salminen et al., Clinical uses of probiotics for stabilizing the gut mucosal barrier: successful strains and future challenges , Antonie Van Leeuwenhoek 70(2–4):347–58 [1997]). The inoculum is delivered in a pharmaceutically acceptable ingestible formulation, such as in a capsule, or for some subjects, consuming a food supplemented with the inoculum is effective, for example a milk, yoghurt, cheese, meat or other fermentable food preparation. Useful probiotic agents include Bifidobacterium sp. or Lactobacillus species or strains, e.g., L. acidophilus, L. rhamnosus, L. plantarum, L. reuteri, L. paracasei subsp. paracasei , or L. casei Shirota, (P. Kontula et al., The effect of lactose derivatives on intestinal lactic acid bacteria , J. Dairy Sci. 82(2):249–56 [1999]; M. Alander et al., The effect of probiotic strains on the microbiota of the Simulator of the Human Intestinal Microbial Ecosystem ( SHIME ), Int. J. Food Microbiol. 46(1):71–79 [1999]; S. Spanhaak et al., The effect of consumption of milk fermented by Lactobacillus casei strain Shirota on the intestinal microflora and immune parameters in humans , Eur. J. Clin. Nutr. 52(12):899–907 [1998]; W. P. Charteris et al., Antibiotic susceptibility of potentially probiotic Lactobacillus species , J. Food Prot. 61(12):1636–43 [1998]; B. W. Wolf et al., Safety and tolerance of Lactobacillus reuteri supplementation to a population infected with the human immunodeficiency virus , Food Chem. Toxicol. 36(12):1085–94 [1998]; G. Gardiner et al., Development of a probiotic cheddar cheese containing human - derived Lactobacillus paracasei strains , Appl. Environ. Microbiol. 64(6):2192–99 [1998]; T. Sameshima et al., Effect of intestinal Lactobacillus starter cultures on the behaviour of Staphylococcus aureus in fermented sausage , Int. J. Food Microbiol. 41(1):1–7 [1998]).


Personally i think is better to use a probiotic in capsules "for treatment" and later switch to kefir,etc.



Hope this helps.