Answer: Zipfizz Energy Shots are not keto, as they're too high in carbs.
Each serving of Zipfizz Energy Shots (4 fl oz) contains 8 g of net carbs. Unfortunately, that's a bit too high to be appropriate for the keto diet.
Zipfizz Energy Shots have 120.0 mg of caffeine. A 2017 study found that people who consumed between 2.5 and 5.0 mg of caffeine per kg of body weight raised their blood ketone levels between 88% and 116%. Caffeine has also been shown to boost metabolism, enhance short-term energy levels, and help with fat loss.
For an energy supplement that fits better with the keto diet, consider 5-Hour Energy Shots. At zero net carbs, they provide a similar energy boost to Zipfizz Energy Shots without interfering with your ketosis. And, of course, you can always drink black coffee, the original zero carb energy drink.