They are both probiotics, but have different strains of bacteria in them. There are a lot (hundreds? maybe?) of different bacteria that are considered probiotics. There are very likely ones that exist in our guts that we don't even know about
yet. Align only contains one species of bacteria, where I believe VSL#3 contains eight. VSL#3 also has a higher number of live active cultures (live bacteria, essentially) than any other probiotic on the market. There are many, many, many different probiotics on the market, so it is hard to decide which one to take. Personally, I think it's better to take one with more than one species and a high number of live active cultures. Also, I'd use one that is refrigerated, as that helps keep the bacteria alive. I wouldn't take both at once. Neither require a prescript
ion, but there is a prescript
ion version of VSL available, and your insurance may cover it. It's quite expensive.
Status: Remission since late May 2009!
Symptoms began in November 2008, ~4 weeks after giving birth to my son.
Diagnosed with pancolitis on 1/30/09
Currently taking Apriso (4 pills ONCE!! daily), Rowasa twice weekly, Natural Factors Ultimate probiotic 12/12 Formula, and Zoloft (25 mg).