Potassium is often used because it buffers the sodium in a way that makes it easier on your stomach. For salt pills, I will only use Vitassium, but that does have potassium. Straight salt tablets are cheap, but they’ve made me extremely sick before.
As for mixes, whew, I have a long list of what I’ve tried! I’ll share the two brands I actively use, but I can dig up the review list of about a dozen things I sent a friend, if you want it.
LMNT is my favorite (1000 mg per 16–32 oz). (They have a referral program that will give a new customer a free sample pack and me a free box, so if you are interested and willing, I’d love to send you a link.) They have a lot of common flavors but have a lot of more unusual ones too. I know a number of people like their mango chili flavor because it’s different and not all sweet (I was not a fan). I actually love their chocolate one iced cold; sounds gross and not for everyone, but I’m glad I took my friend’s suggestion to try it!
IQ Mix is the other one I’m using (500 mg per 16 oz). I wanted a piña colada flavor, and it was the one I settled on. Their other flavors were fine, but I had my heart set on the one. It includes lion’s mane and some other things so it’s not for everyone, but I just like it for the sodium and flavor.
I’m more than happy to share more, but it might be overwhelming, lol.