Usually i take two capsules a day; of 20 billion. The brand i use is Natures Bounty. Contains no sugar but it does contain milk. I tried PB8 vegan probiotics and i almost got ulcers. The best brand for me i have personally tried is the one i mention first. Culturelle also didn't help me much. Btw Millions don't work for me, i have to take capsule forms, in billions; free of yeast and sugars. I tried high doses of probiotics and it didn't cure to the point where my candida was fully wiped out, Sometimes i also add 50mg of bee propolis, just me personally but it does helped me a lot! The most probiotics i can take is 4 a day but that is only when i feel extra sick, 30 minutes each and after wait another 30-40 mins for a meal. i try to to only eat 2 a day. Have you heard of prebiotics i heard that it is good to take em for probiotics, so it can feed the probioics. I might try prebiotics also.

Video on prebiotics and probiotics
https://www.youtube.com/watch?v=AGVRTVOPJsQ