Help with heartburn from electrolytes

I'm using Venture Pal packets for the heavy lifting on my sodium requirements and I think the citric acid and vitamin c are causing heartburn. I have a hard time drinking enough plain water so I haven't tried sodium capsules. I also have Trioral and for a while was using a packet of Trioral and a packet venture pal in 32 oz of water a few times a day, but got spooked because of how much sugar is in the Trioral. No luck finding anything other than LMNT (which I really REALLY want to avoid buying and am hoping doesn't flag this for removal) and Buoy which I don't feel confident that I could measure intake accurately when using. I also don't want anything with a ton of b vitamins, I don't need any assistance in making my heart feel like it might explode.

Anyone have any suggestions for a non-homemade solution that could help with the heartburn? I travel by plane and don't have the bandwidth to explain a bag of white powder to TSA agents every time. Yes, I realize this is a lot of asks. Appreciate any suggestions you all might have for my very nitpicky request! Stay salty y'all!