Why are ingredients different now with titanium dioxide and hydroxypropylmethylcellulose (hpmc)? after research, i don’t want !!

Titanium dioxide is a whitening agent. It's used widely in manufacturing of many products. Apparently the European food safety regulators no longer consider it safe, and the Environmental Working Group is asking the FDA to ban it (something to do with PFAs). If the product still contains this, I'd skip it.

Is this product vegetarian?

I'm going to say that because this product contains no food, it can't be vegetarian. Just like salt can't be vegetarian.

Is this dissolved in water? has anyone tested the hydrogen ppm?

yes, i dissolve it in a glass of water. but when I also have my electrolyte powder in the water, it has a fizzing reaction with it that I haven't been able to figure out yet. but no idea about the hydrogen ppm.