I'm glad you have an answer, and welcome.
After looking up those supplements, my first thought is what stake does your doctor have in the company? If you purchase the cheapest way possible, 90 pills at a time, that is $200 for 45 days of supplements. And that's just the supplements, not the rest! Another $70 for probiotics, plus however many of the others you take. And at $26 a bottle for that aloe juice and 16 2oz servings you'll go through two bottles a week if that means 4-5 times a day as needed. I can tell you what I'd tell my doctor, no matter if I had the money to spend on it or not.
There are a lot of supplements and probiotics on the market. Your doctor having a financial stake in the company shouldn't influence which you choose to take. Have you been tested for vitamin deficiencies before you start taking anything or is your doctor just advising a random catch-all? A good B complex is something I see a significant number of people here say they take because they were deficient in B something or other. The ORAC and OPC-3 don't seem to offer any actual benefit, did the doctor provide sound medical reasoning on why you should be taking each of these? They both really seem an awful lot like snake oil to be perfectly honest.
I'm sure there will be people along with more knowledge of probiotics and supplements than I have. I have never taken mine in liquid form, I've always taken pills when I take them. I take ones with a USP stamp on them, which means they are independently reviewed by an outside source for quality. Nature Made is a good company and will label on their bottle if they are gluten free or not. It is my go-to company for supplements. I don't take a probiotic so I don't really have any advice on that one.