Is it safe to take zinc, b-complex, flaxseed oil and probiotics daily? if so in what order should they be taken?

Yes but . . .: There's no study proving any benefit from taking any or all of the supplements you've noted. Well, no large randomized, double blind, placebo controlled, studies (unless laboratory-proven deficient). Maybe a few observational ones but that's about it. Therefore, it's not clear that any specific order is better than another. If you're concerned, ask prescribing doc for his/her recommendation.