UPDATE: Reign Storm released four new flavors in 2024, click here for our review.

Reign Storm is a new energy drink line from the Monster Energy spin-off that announces it has “clean energy.” What does that mean? Well, it doesn’t involve solar panels, wind turbines, dams, or heat extracted from geothermal reservoirs. Instead, each can gets its 200 milligrams of caffeine from plant-based sources, all of which are brought to us by the letter G — green coffee beans, green tea extract, ginseng, guarana, and guayusa.

The line is available in 12-ounce “slim” cans and has four flavors — Harvest Grape, Kiwi Blend, Peach Nectarine, and Valencia Orange. The can’s lip proudly exclaims it accelerates metabolism, provides immunity support, and increases energy. Along with the caffeine, Reign Storm has zero sugar, only ten calories per can, and no preservatives, artificial flavors, or colors. It also contains biotin, which helps support hair and skin health. It’s similar to caffeine in that both aren’t needed as much if you get a good night’s sleep.

To bring the sugar down to zero, Reign Storm has a downpour of familiar artificial sweeteners — sucralose, acesulfame potassium, and erythritol. With the first few sips of every flavor, those artificial sweeteners were highly noticeable in the aftertaste, which is a sharp contrast from the sweet, fruity, and delicious flavors that hit my tongue the moment the beverage ended up in my mouth. It was also confusing because Monster’s Ultra zero sugar line does a wonderful job hiding its artificial sweeteners, so why wasn’t that the case here?

However, after the opened cans sat in my fridge overnight, the artificial sweeteners weren’t noticeable the next day. It was like I was drinking Monster Ultra flavors. Even after opening the second set of flavors I purchased, I no longer noticed the weird aftertaste. I thought I should mention all this because I hope someone experienced the same thing so that I can prove I’m not going crazy.

But now, let’s talk about the sweet, fruity, and delicious flavors. I found all of them to be good or great. Harvest Grape smells and tastes like a grape soda, which excites me because I love grape soda. Peach Nectarine’s flavor is similar to Monster Peachy Keen, which reminds me of peach gummy rings and a flavor I adore. Valencia Orange is a pleasant combination of sweet and tart orange flavors, although there’s a burst of sourness that might be too strong for some. However, Kiwi Blend, a combination of kiwi and green apple, was my favorite. Its name is a little deceiving because while its sourness could be mistaken for kiwi, this has primarily green apple vibes to it.

My issues with Reign Storm are that they come in 12-ounce cans and are more expensive than 16-ounce regular Reign cans. Is shrinkflation going on? Is that possible with a brand new product line?

If you’re into getting your caffeinated fix from plant-based sources that start with the letter G or want some biotin to help keep your skin and hair luxurious, Reign Storm is an excellent option and maybe the only option. However, while tasty, their size and price make me hesitant to repurchase them.

Purchased Price: $2.59 each
Size: 12 oz cans
Purchased at: Target
Rating: 8 out of 10 (Kiwi Blend), 7 out of 10 (Harvest Grape), 7 out of 10 (Peach Nectarine), and 7 out of 10 (Valencia Orange)
Nutrition Facts: (1 can) 10 calories, 0 grams of fat, 270-280 milligrams of sodium, 3-5 grams of carbohydrates, 0 grams of sugar (Valencia Orange and Harvest Grape have 2 grams of erythritol), 0 grams of protein, and 200 milligrams of caffeine.