Of course if caffeine is not the issue you can always go to any Popeye's Supplements and just buy caffiene pills. They work very well too.
Honerstly...I have tried them all when in Vegas...red bull/rockstart, etc....But even though they have caffeined, the best and easiest is or are those Crystal Light Inidvidual packets that say "energy"...I have only seen Strawberry and now Mango, but easy to pack and AWESOME with Vodka...REd bull and Rockstar don't have much flavor, but the Crystal Light gives you a very nice boost with FLAVOR....
Basically about 3 regular coffees or Cokes worth of caffeine. Also comes in convenient powder form . 120msg of caffeine per 16 ounce bottleCAFFEINE LEVEL HIGH Crystal Light is a series of powdered low-calorie drink mixes made by Kraft Foods. The Wild Strawberry Enhanced variety contains caffeine (sweetened with Aspartame) and comes in a ready-to-drink bottle (16oz) or a powdered stick form (mix into 8oz). Each 8oz serving of Crystal Light Energy has 60mg caffeine. Ingredients in Crystal Light Energy Citric Acid, Maltodextrin, Aspartame (Phenylketonurics: Contains Phenylalanine.), Caffeine, Contains Less than 2% of Natural and Artificial Flavor, Niacinamide, Calcium Pantothenate and Biotin (B-Vitamins), Vitamin B6, Vitamin B12, Magnesium Oxide, Artificial Color, Red 40, Yellow 5, Blue 1, Soy Lecithin, Tocopherol (to Protect Flavor). Sugar content of Crystal Light Energy: Contains no sugar. Crystal Light Energy contains 7.50 mgs of caffeine per fluid ounce (25.36mg/100mls). Caffeine (mg) per Ounce 200180160140120 10080604020 0 Crystal Light Energy Mana Energy Potion Coffee (Espresso) Starbucks Double Shot
Finally found a store that still sells the RockStar shots! Bought 4 yesterday. Will stop in a few more times before the trip (I don't want to buy dozens at once...and make the store owner think I'm about to go on the world's biggest bender. He already seemed shocked that I was buying 4.) "Those have a LOT of caffeine," he warned. "I know," I smiled. "God do I know."
Perfect combo for me is 8oz water with a 30mg Vyvanse or Adderall ER! You can't put me to bed! LOL! Ed
Best Energy drink of all time is "SPIKE" at GNC.....I can drink a 5 hour energy then take a nap. SPIKE really works...... No calories, carbs, sugar, and it tastes good.... I sound like a commercial.
For the people that have the gas stations at the Wal-Marts alot of them have one called Red Strike energy that gets the job done. I had one every night after my nap to restart my night and 17 days later there were still working like a charm.