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The 10 Most Caffeinated Diet Drinks

Did you know that diet sodas have more caffeine than regular soda?

Diet Coke has 46.5mg caffeine compared to regular Coke that has 34.5mg. That’s a thirty per-cent increase!

Here are the 10 most caffeinated diet soft drinks – and they are nowhere near the levels of caffeine in Starbucks drinks.

Diet Pepsi Max

Per 12oz can : 69mg caffeine

A can of regular Pepsi-cola contains 38mg caffeine.





Diet Sundrop

Per 12oz can: 69mg caffeine

Sun Drop is a brand of citrus soda drink from Cadbury-Schweppes. The level of caffeine in the Diet version came as a complete surprise – but then – even the regular version has 63mg in a 12oz can. Note: regular can displayed.





Diet Mountain Dew

Per 12oz can: 55mg caffeine

Mountain Dew is one of the most popular citrus soft drinks. Both diet and regular have the same amount of caffeine. In countries outside the USA – Mountain Dew has either reduced amounts of caffeine (or no caffeine at all).





Pepsi ONE

Per 12oz can: 54mg caffeine

Pepsi ONE is a very similar formulation to Diet Coke with Splenda – although Pepsi ONE contains significantly more caffeine.





Diet Cheerwine

Per 12oz can: 48.1mg caffeine





Diet RC Cola

Per 12oz can: 47.3mg caffeine

Royal Crown (RC) colas have been around for a long time and are currently owned by Cadbury Schweppes. As in the case of Diet Coke – here the diet version has more caffeine than the regular RC Cola. 2





TaB

Per 12oz can: 46.5mg caffeine

TaB (from Coca-cola) is one of the oldest diet or sugar-free soft drinks around. It has more caffeine than Diet Coke





Diet Coke

Per 12oz can: 46.5mg caffeine

Diet Coke has significantly more caffeine in it than regular coke (34.5mg).





Diet Sunkist Orange Soda

Per 12oz can: 41.5mg caffeine

Contains slightly more than the regular version of Sunkist. Who would have thought that Orange Soda was caffeinated?





Diet Dr Pepper

Per 12oz can: 41mg caffeine

Contains the same amount as regular Dr Pepper.





How Much Caffeine in Instant Coffee?

According the USDA – 1 rounded teaspoon of instant coffee powder contains 57mg of caffeine. (source).





What about Diet Coke Plus?

The vitamin-filled Diet Coke Plus contains the same amount of caffeine as Diet Coke.

Diet Pepsi?

Didn’t even make it to this list. Diet Pepsi has 36mg caffeine in a 12oz can.

Sources: The CaffeineInformer caffeine database and caffeine in citrus soda, along with PepsiCo, Coca-cola, Sundrop.