OF course one can do this by dissolving in an acidic drink of ones choice.

But for long term storage and Pharma Convenience it seems that it would be nice to haver this option.

I think the main issue is the Hydroscopic nature of some acids which would render a less handleable product.

I tried Phosphoric and realized that IT was Hydroscopic.

Well, I wonder if Fumaric Acid is a good choice.
IT is very non-hydroscopic.
And it is a food supplement, that is taken in doses for treating Psoriasis in doses of 500-mg per serving.