Celsius and Alani Nu built huge, loyal followings — and for good reason. They taste good, they’re widely available, and they deliver a real caffeine hit. If you’re comparing them with a newer organic option like Natural Gas, the differences come down to what’s actually on the ingredient list. Here’s an honest look, based on published labels as of 2026.
Caffeine: same dose, different source
All three land around 200mg of caffeine per can — a strong, effective dose. The difference is where it comes from. Celsius and Alani Nu use standard added caffeine; Natural Gas uses organic caffeine from green tea and green coffee. The buzz is similar; the sourcing is not.
Sweeteners
This is the biggest split. Both Celsius and Alani Nu rely on sucralose, a synthetic sweetener, to hit “zero sugar.” Natural Gas skips sucralose entirely and sweetens with organic stevia and organic erythritol instead. If avoiding artificial sweeteners is the reason you’re reading this, that’s the line that matters.
Additives and colors
Mass-market energy drinks typically include artificial colors and a broad “natural flavors” line. Natural Gas uses no artificial colors or synthetic flavors, and no seed oils or chemical preservatives.
Certification
Neither Celsius nor Alani Nu is USDA Certified Organic — very few energy drinks are, because the bar is high. Every Natural Gas can is. That certification is verified by a third party, ingredient by ingredient.
At a glance
- USDA Certified Organic: Natural Gas ✓ · Celsius ✕ · Alani Nu ✕
- Caffeine source: Natural Gas — organic green tea & coffee · Celsius & Alani Nu — standard added caffeine
- Sweetener: Natural Gas — organic stevia & erythritol · Celsius & Alani Nu — sucralose
- Artificial colors/flavors: Natural Gas — none · others — yes
The honest verdict
If you love your Celsius or Alani Nu, you’re not wrong — they do what they promise. But if you’ve been looking for the same energy without sucralose, synthetic caffeine, or artificial color, that’s the exact gap Natural Gas was built to fill. The simplest way to compare is to taste it: grab the Variety Pack and judge it against what’s in your fridge.
Comparison based on publicly available product labels as of 2026. Always check the current label for the most accurate information.
