Have a look at http://www.drmyhill.co.uk There is a lot of useful information on her website. Have a look at bioray cytoflora, http://www.bioray.com Because it is not actually a probiotic because it has had its cell wall decimated and is actually classed as a prebiotic as it is a probiotic lysate that does not colonise the digestive tract. Bioray cytoflora is a tincture that improves gut function and improves the immune system. Cytoflora begins to work straight away after ingestiation. It pushes pathogens out of the colon and feeds the beneficial bacteria. I read in another posting that omega three is good for depression. Just out of interest, does warmer climate effect your symptoms more?