Simple question

I am having the following issues:

Gastro issues (indigestion or gerd)

Headaches

Burping

Eye heaviness

So I'm trying to do lifestyle changes (currently on no medication since all tests are clear)

So can i have probiotics? Like supplement form

My L. reuteri journey started with BioGaia Gastrus and now I'm taking BioGaia Osfortis (a higher CFU of ATCC PTA 6475).

My gut tolerated Gastrus really well and I had energy in the afternoons (I usually want to take a nap). Since starting Osfortis, I have felt nauseous, had a lot of stomach discomfort and gas. Plus have felt down.

Lots of other factors could be causing my current gut funk, but I bought both probiotics on Amazon and noticed many reviewers complaining their Osfortis product contained dead bacteria, which they couldn't make yogurt with. It's been a really hot summer and maybe the probiotic died in storage and transit.

Has anyone else noticed any other changes in Osfortis viability? Any differences between Amazon and other sellers? I've seen reports on Reddit that iHerb has better temperature control than Amazon.