Looking for a very specific recommendation for a road trip…

My husband and I are going on a road trip next month, and it’s going to involve some long stints with late bedtimes and early wakes. I absolutely struggle with mornings particularly, and my issue is that I can’t drink coffee or certain types of tea due to their acidity. Therefore, I usually go without an energy fix on the regular because my only experience with energy drink is heart palpitations, bad indigestion, and migraines.

Does anyone have any suggestions for an energy drink I should try specifically to help with this road trip? I need something that won’t spaz me out - no racing heart, no anxiety, none of that shit. And preferably something that’s zero sugar, tastes decent, and won’t break the bank for a few cans as a “just in case”.

I have had Monster before and I could get it affordably since my mom works there, but my experience with Monster was definitely very negative. I’ve had a few sips of the Ghost flavors my husband likes, but I’ve been scared to commit to them since I primarily like the sour flavors but can’t have all the citric/malic acid. I also feel like the caffeine content may be a touch too high for me considering the only caffeine I get is from the occasional Dr. Pepper.

Any help is appreciated!