VSL#3 is very expensive. I believe this over-the-counter strength can be in capsule or powder form.
VSL#3DS is Double Strength and only available by prescription. Beware that your doctor and pharmacist may have never heard of this. I called my insurance company and they do cover the DS. I called my doctor and told him how I wanted the prescription written. This part is very important:
~It must be written as VSL#3DS and specify that there are 20 packets per box - DS is only in powder form.
The drug store did not stock it but were able to get it from their supplier and I had it the next day - Drug Mart.
VSL#3DS is a powder and must be kept refrigerated.
My insurance company said that no matter what dosage my doctor writes the script for it will be the same co-pay. So, my doctor wrote that I need to take eight packets per day (I only take a 1/2 - 1 pack as written in the instructions for colitis not flaring). Needless to say, I have A LOT of this stuff for my $50 co-pay. The pharmacist said that these 10 boxes that I got, if I would have paid out of pocket, would have been $1,950.
Hope this info helps.