Monster carries more total caffeine per serving (160mg per 16 oz can vs 120mg per 12 oz can), but ounce for ounce Red Thunder (Aldi) is actually the stronger drink at about 10mg per fluid ounce against 10. Which one "has more caffeine" depends on whether you measure the container or the concentration.
Red Thunder (Aldi) vs Monster: the numbers
| Red Thunder (Aldi) | Monster | |
|---|---|---|
| Caffeine per serving | 120mg per 12 oz can | 160mg per 16 oz can |
| Caffeine per fl oz | 10.0mg | 10.0mg |
| Servings to reach 400mg (FDA context) | 3.3 | 2.5 |
Sources: Red Thunder (Aldi)'s figure is verified in our Red Thunder (Aldi) caffeine guide against Caffeine Informer (source); Monster's figure is verified in our Monster guide against Caffeine Informer (source).
Which one should you pick?
Pick Red Thunder (Aldi) when you want the lighter dose or a slower ramp, and Monster when you actually need the bigger hit and know your tolerance. If you are stacking either with other caffeinated drinks through the day, run the math against the 400mg reference rather than guessing.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. Tolerance and health vary, so treat these numbers as information, not advice.
Related reading
- Red Thunder (Aldi): the full caffeine guide
- Monster: the full caffeine guide
- The verified caffeine database
- Every drink compared: the comparisons index
- Compare any two of 120+ drinks
As an Amazon Associate, Barista Life earns from qualifying purchases.
Gear from this guide
FAQ
Does Red Thunder (Aldi) or Monster have more caffeine? Monster: 160mg per 16 oz can versus 120mg per 12 oz can for Red Thunder (Aldi).
Which is stronger per ounce? Red Thunder (Aldi), at about 10.0mg per fluid ounce versus 10.0mg for Monster.
Barista Life runs on coffee people. Browse the Barista Life shop to support the site.
Get the good coffee stuff
One email a week: what we verified, what is worth buying, and what is not. No spam, unsubscribe any time.