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Packaging of EFF'N Energy! dietary supplement with red and black design on a white background
Muscletech EFF'N Energy supplement packaging with oranges on a red background
Eff'n Energy!
EFFN Energy drink mix packet being poured into a glass of water with usage instructions on a red background.
Eff'n Energy!
Eff'n Energy!
Eff'n Energy!
Eff'n Energy!
Packaging of EFF'N Energy! dietary supplement with red and black design on a white background

Eff'n Energy!

$39.99

energy in minutes1

One-of-a-Kind Energy & Sensory Experience1

Enhances Focus & Cognition1
Flavor

available exclusively at gnc

Product Description

Quick-dissolve FZZR™ technology delivers fast results. For ultimate versatility with unique effervescent flavors,  EFF’N™ ENERGY! fuels your drive to do more, be more, and crush every goal.

SUPPLEMENT FACTS

Blue Razz Fizz

Orange Tangerine Fizz

Free shipping
on $30+ orders

Return policy
30-Days

Fast Shipping
2-3 Days

Consumer Reports Study Finds MuscleTech The Only Protein Powder With No Detectable Lead*

Read More

*From Consumer Reports’ October 2025 testing. MuscleTech 100% Mass Gainer showed no detectable lead. 

product overview

Power Your Grind. Fuel Your Night.

eff’n™ energy! is built with a high-impact formula combining n-acetyl-l-tyrosine, caffeine, yohimbe, and geniuspure® alpha-gpc. together, these ingredients make eff’n™ energy! the go-to spark when life demands more—whether it’s prs in the gym, pulling an all-nighter, or keeping the afterparty alive. 

  • enhances cognition, focus &  delivers hard-hitting energy 

1EFF’N™ ENERGY! contains caffeine anhydrous to deliver energy and focus in minutes, and enhance cognition, as measured in multiple studies via increased alertness, improved vigilance and faster reaction time

  • FZZRTM Technology

Effervescent bead delivery dissolves fast, so you feel it kick in quickly. 

How TO uSe

rip it. pour it. feel it.

Take 1 serving (1 sachet) daily, 30-60 minutes before your workout. Pour the beadlets into 8 oz. of water and wait until they dissolve completely, consuming the entire sachet. Do not exceed 1 serving (1 sachet) in a 24-hour period. Maintain an adequate state of hydration during use. Read the entire label before use and follow directions provided.

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