How much caffeine is in Monster Energy Ultra Fantasy Ruby Red?

Monster Energy Ultra Fantasy Ruby Red by Monster Energy contains 150mg of caffeine per can.

Is Monster Energy Ultra Fantasy Ruby Red sugar-free?

Yes, Monster Energy Ultra Fantasy Ruby Red is sugar-free.

How many calories are in Monster Energy Ultra Fantasy Ruby Red?

Monster Energy Ultra Fantasy Ruby Red has 10 calories per can.

What is Monster Energy Ultra Fantasy Ruby Red rated?

Monster Energy Ultra Fantasy Ruby Red has an average community rating of 4.0 out of 5 from 1 rating on Energy Drink Ratings.

How does the caffeine in Monster Energy Ultra Fantasy Ruby Red compare to daily guidelines?

One can: 150 mg caffeine, about half the FDA's 400 mg a day guideline for healthy adults.

Does Monster Energy Ultra Fantasy Ruby Red have more caffeine than a cup of coffee?

Yes. At 150 mg, Monster Energy Ultra Fantasy Ruby Red has about as much caffeine as 1.5 cups of brewed coffee (an 8 oz cup of brewed coffee has about 95 mg, per the USDA).

What sweetens Monster Energy Ultra Fantasy Ruby Red?

Sweetened with Sucralose, Acesulfame Potassium, and Erythritol.

Monster Energy · Zero Ultra

Monster Energy Ultra Fantasy Ruby Red

Name: Monster Energy Ultra Fantasy Ruby Red
Brand: Monster Energy
Rating: 4.0 (1 reviews)

Availability last checked Sep 28, 2026

Only 1 rating so far — yours would count for a lot right now.

4.0 (1)

Frequently asked questions

How much caffeine is in Monster Energy Ultra Fantasy Ruby Red?: Monster Energy Ultra Fantasy Ruby Red by Monster Energy contains 150mg of caffeine per can.
Is Monster Energy Ultra Fantasy Ruby Red sugar-free?: Yes, Monster Energy Ultra Fantasy Ruby Red is sugar-free.
How many calories are in Monster Energy Ultra Fantasy Ruby Red?: Monster Energy Ultra Fantasy Ruby Red has 10 calories per can.
What is Monster Energy Ultra Fantasy Ruby Red rated?: Monster Energy Ultra Fantasy Ruby Red has an average community rating of 4.0 out of 5 from 1 rating on Energy Drink Ratings.
How does the caffeine in Monster Energy Ultra Fantasy Ruby Red compare to daily guidelines?: One can: 150 mg caffeine, about half the FDA's 400 mg a day guideline for healthy adults.
Does Monster Energy Ultra Fantasy Ruby Red have more caffeine than a cup of coffee?: Yes. At 150 mg, Monster Energy Ultra Fantasy Ruby Red has about as much caffeine as 1.5 cups of brewed coffee (an 8 oz cup of brewed coffee has about 95 mg, per the USDA).
What sweetens Monster Energy Ultra Fantasy Ruby Red?: Sweetened with Sucralose, Acesulfame Potassium, and Erythritol.