Red Bull Vs. Mountain Dew Caffeine Content

While Mountain Dew (Mtn Dew) is notorious for its high level of caffeine as a soda, many energy drinks have a higher amount. Red Bull is no exception.

This article will provide a comparison of the caffeine in Red Bull versus Mountain Dew of the same serving sizes. We also compare the caffeine in these beverages to similar drinks. By the end, you should have a solid understanding of caffeine in Red Bull and Mountain Dew.

Caffeine: Red Bull Vs. Mountain Dew

The table below reflects the caffeine in Red Bull and Mountain Dew for common serving sizes of these beverages. In summary, Red Bull contains over double the amount of caffeine that is in Mountain Dew. You may wish to avoid these drinks if you are sensitive to caffeine because of their higher caffeine content.

Serving SizeRed Bull – Caffeine (mg)Mtn Dew – Caffeine(mg)
8.4 fl. oz.80 mg38.22 mg
12 fl. oz.113.5 mg54 mg
16 fl. oz.151 mg72 mg
20 fl. oz.189 mg91 mg

SEE ALSO>>>Red Bull Vs. Coke Caffeine


Caffeine is either naturally occurring as in tea and chocolate or added to foods/beverages during manufacturing. Red Bull and Mountain Dew contain added caffeine included as ingredients (see below).

Red Bull – Carbonated Water, Sucrose, Glucose, Citric Acid, Taurine, Sodium Bicarbonate, Magnesium Carbonate, Caffeine, Niacinamide, Calcium Pantothenate, Pyridoxine HCl, Vitamin B12, Natural and Artificial Flavors, Colors.

Mtn Dew – Carbonated Water, High Fructose Corn Syrup, Concentrated Orange Juice, Citric Acid, Natural Flavor, Sodium Benzoate Preserves Freshness, Caffeine, Sodium Citrate, Erythorbic Acid Preserves Freshness, Gum Arabic, Calcium Disodium EDTA to Protect Flavor, Brominated Vegetable Oil, Yellow 5

Caffeine Comparison

Now that we have established the amount of caffeine in Red Bull versus Mountain Dew, let’s see how their caffeine compares to other popular beverages.

BeverageServing SizeCaffeine(mg)
Mtn Dew12 fl. oz.54 mg
Red Bull12 fl. oz.113.5 mg
Mello Yello12 fl. oz.51 mg
Pepsi12 fl. oz.38 mg
Coke12 fl. oz.34 mg
Diet Pepsi12 fl. oz.35 mg
Diet Coke 12 fl. oz.46 mg
RC Cola12 fl. oz.43 mg
Monster Original12 fl. oz.120 mg
Rockstar Original12 fl. oz.120 mg
Coffee12 fl. oz.144 mg*
Black Tea12 fl. oz.63 mg*
*Approximate. Caffeine varies based on type, brew, etc.

Overall, the caffeine in Mountain Dew is high for a soda but much lower than many coffee and energy drinks. The caffeine in Red Bull is high but similar to the caffeine found in its rivals like Monster and Rockstar.