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I am in the middle of a public health challenge with a target of about 2,000 calories a day. I am not a doctor, a dietitian, or a nutrition expert. I am a regular guy who logs what he drinks in MyFitnessPal and reads labels before he opens a can.
I already wrote about best low calorie drinks for staying under your calories, covering water, flavored water, electrolytes, and a few energy options side by side. This post is narrower on purpose. It is only about energy drinks, and how to fit them into a daily calorie limit without guessing.
Every number below comes from a product label I checked, a manufacturer page, or a retailer listing that matches the can. Flavors change, so always check the can you are holding. Sweeteners and caffeine affect people differently. If you have a health condition, take medication, or are pregnant, talk to your doctor before adding energy drinks to your routine.
Why energy drinks are different from other low calorie drinks
Water and unsweetened flavored water are mostly about hydration and taste. Energy drinks add caffeine, and often sweeteners and other ingredients that show up on the label.
That changes how I treat them when I count calories:
- Calories still matter. Zero sugar on the front does not always mean zero calories on the back.
- Caffeine is a daily budget of its own. You can stay under your calories and still overdo caffeine.
- Serving size varies. An 8 ounce can and a 12 ounce can are not the same drink for logging.
- They are optional. Plain water remains the default. An energy drink is a choice I plan for, not free background noise.
Want the wider drink list? Use the low calorie drinks post linked above. Want caffeine in a can and still care about your daily number? Stay here.
What to check on the label before you buy
Before I buy a pack, I look at five things on the can or product page:
- Calories per can (or per serving, if the can is more than one serving).
- Total sugars and added sugars. Juice-based drinks can have sugar even with zero added sugar.
- Caffeine milligrams. Write it down. Guessing is how people stack cans without noticing.
- Sweetener type. Stevia, sucralose, or none. Taste and how you feel can differ.
- Serving size in fluid ounces. Compare cans fairly, not by front-of-can marketing.
I also check whether the brand says the drink is "not a low calorie food." That just means log it like food, not treat it as free.
Celsius Fizz Free (about 10 calories)
This one I bought. I picked up Celsius Fizz Free Blue Razz Lemonade. Fizz Free means it is not carbonated.
The nutrition panel on my can shows 10 calories per can, with zero sugar on the front and 0 grams of total carbohydrate on the panel. So it is low calorie, not zero calorie. If you drink a few in a day, those tens still add up.
Caffeine is the bigger number. Retailer listings for this 12 fluid ounce can, including Kroger's product page, list 200 milligrams of caffeine. Ingredient lists for this flavor include sucralose, green tea extract, guarana seed extract, and caffeine. You can also find the flavor on Celsius's site.
Ten calories is easy to log. Two hundred milligrams of caffeine is a large single serving, so I treat one can as a real caffeine hit.
See Celsius Fizz Free Blue Razz Lemonade on Amazon
I posted my own can and label photos in the low calorie drinks post if you want to see what the panel looked like on the can I bought.
V8 +Energy (50 calories)
I also bought V8 +Energy Peach Mango. This one is the clearest example of why "energy drink" and "zero calorie" are not the same thing.
The nutrition panel on my can matches the V8 +Energy Peach Mango page from Campbell's:
- 50 calories per 8 fluid ounce can
- 12 grams total carbohydrate
- 11 grams total sugars, with 0 grams added sugars
- 50% juice
- 80 milligrams of caffeine from black and green tea
- Sucralose in the ingredient list
Campbell's notes on that page that it is "not a low calorie food." The sugar comes from the fruit and vegetable juice, not from added sugar. Fifty calories is still fifty calories. I log it the same way I would log a small snack.
It earns a spot for lower caffeine, a smaller can, and juice-based taste. It still needs a plan because 50 calories is not free.
See V8 +Energy Peach Mango on Amazon
Zevia Zero Sugar Energy (zero calories)
Zevia's energy line is the zero calorie option among the three in this post. The Amazon link in this post is for the Zevia Zero Sugar Energy Fruity Fuel Variety Pack, so check your pack's flavors on the can.
On Zevia's Fruity Fuel variety pack page, Zevia Energy is listed as zero sugar and zero calories with 120 milligrams of caffeine per can. Ingredients listed there are carbonated water, natural flavors, citric acid, stevia extract, and caffeine.
Zevia's FAQ says its drinks are sweetened only with stevia extract and do not contain erythritol. It also says the caffeine in its energy drinks comes from tea leaves.
Zero calories on the label means it does not touch your daily number if the can matches the product page. Caffeine is still 120 mg, and flavors can vary, so check yours.
See Zevia Zero Sugar Energy Fruity Fuel Variety Pack on Amazon
How to compare calories and caffeine side by side
Here is the simple grid I use when I am deciding what to open:
| Drink | Calories | Caffeine | Serving | Sweetener (listed) |
|---|---|---|---|---|
| Zevia Energy | 0 | 120 mg | per can (per Zevia product page) | Stevia |
| Celsius Fizz Free Blue Razz Lemonade | 10 | 200 mg | 12 fl oz | Sucralose |
| V8 +Energy Peach Mango | 50 | 80 mg | 8 fl oz | Sucralose |
Lowest calories: Zevia, then Celsius, then V8. Lowest caffeine: V8, then Zevia, then Celsius. Do not treat every can as the same volume.
For calories, Zevia and Celsius cost almost nothing. For milder caffeine, V8 is gentler among these three, at 50 calories.
Fitting an energy drink into a daily calorie limit
My approach is boring on purpose:
- Decide the can before you open it. Look at calories and caffeine first.
- Log it in MyFitnessPal when you open it. Even 10 calories. Especially 50.
- Count it against the day. An energy drink is part of the 2,000, not "extra."
- Do not stack cans to make up for sleep. That is how caffeine totals creep up.
- Keep water as the base. Energy drinks are for moments you actually want caffeine, not for thirst all day.
On a roughly 2,000 calorie day, one V8 at 50 is 2.5 percent of the budget, Celsius at 10 is half a percent, and Zevia is zero. Those stay small if you plan them, not if you treat every can as free because the front says zero sugar.
Watch the caffeine
Calories are only half the decision. From the three cans above: V8 is 80 mg, Zevia is 120 mg, and Celsius is 200 mg.
The FDA's page on how much caffeine is too much says that for most adults, it has cited 400 milligrams a day as an amount not generally associated with negative effects. The FDA also says people vary a lot in sensitivity, and that certain conditions and medications can change that. It advises against energy drinks for kids and teens.
Two Celsius cans alone land at 400 mg before any other caffeine that day. One Celsius plus one Zevia is already 320. Caffeine late in the day can affect sleep for some people, so consider timing, and do not open a second high-caffeine can just because the first one "felt fine." If you are unsure, ask your doctor.
Sweeteners in energy drinks
The three drinks here are not sweetened the same way:
- Zevia Energy: stevia extract (per Zevia's product page and FAQ)
- Celsius Fizz Free and V8 +Energy: sucralose shows up in the ingredient lists for the flavors I checked
I am not making health claims about either sweetener. Try one style at a time and stick with what you can drink without forcing it. Drinks with no sweeteners at all live in the broader low calorie drinks post. Most energy drinks use some sweetener.
My picks for a calorie budget
These are the Amazon links for the three energy drinks in this post. These are Amazon affiliate links.
- Zero calories on the label, stevia, 120 mg caffeine: See Zevia Zero Sugar Energy Fruity Fuel Variety Pack on Amazon
- About 10 calories, non-carbonated, 200 mg caffeine (I bought this): See Celsius Fizz Free Blue Razz Lemonade on Amazon
- 50 calories, juice-based, 80 mg caffeine (I bought this): See V8 +Energy Peach Mango on Amazon
For caffeine without spending calories, reach for Zevia or Celsius and log Celsius's 10. For a smaller caffeine hit at 50 calories, V8 fits. Do not drink all three in one day. That is a caffeine problem first.
Final thoughts
Energy drinks can fit a daily calorie limit when you treat them like any other logged item. Read the calories and caffeine, check the sweetener, and decide before you open the can.
Zevia lists zero calories, Celsius Fizz Free Blue Razz Lemonade is about 10, and V8 +Energy Peach Mango is 50. Caffeine runs partly the other way: V8 at 80 mg, Zevia at 120, Celsius at 200.
None of these cans replace sleep, food, or water. For the wider list beyond energy cans, use my best low calorie drinks post. I will keep sharing what I learn on this health challenge.
FAQ
What are the best energy drinks for a daily calorie limit?
It depends on calories vs caffeine. Zevia Energy lists zero calories with 120 mg caffeine. Celsius Fizz Free Blue Razz Lemonade is about 10 calories with 200 mg. V8 +Energy Peach Mango is 50 calories with 80 mg. Check your can.
Is Celsius zero calories?
Not the Fizz Free Blue Razz Lemonade I bought. Its nutrition panel shows 10 calories per can and zero sugar. Other Celsius flavors can differ, so check the label for your flavor.
How many calories are in V8 +Energy?
The Peach Mango can I bought shows 50 calories per 8 ounce can, with 11 grams of total sugars and 0 grams of added sugars from the juice. Campbell's notes it is "not a low calorie food."
Does zero sugar mean zero calories in an energy drink?
No. Zero sugar is not the same as zero calories. Celsius Fizz Free Blue Razz Lemonade is zero sugar and 10 calories. Zevia Energy lists both zero sugar and zero calories on its product pages.
How much caffeine is too much in a day?
The FDA has cited 400 milligrams a day for most adults as an amount not generally associated with negative effects, but sensitivity varies. Two 200 mg Celsius cans reach that number alone. Ask your doctor if you have a health condition, take medication, or are pregnant.
How do I log energy drinks while counting calories?
Log the full can when you open it, using that can's label. I use MyFitnessPal. Note the caffeine too. Serving size matters: V8 +Energy is 8 ounces, Celsius Fizz Free is 12 ounces.
Are stevia or sucralose energy drinks okay on a calorie budget?
They can fit a calorie budget because they add little or no calories. Sweeteners affect people differently, so try one at a time. Check with your doctor if you have concerns.