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Most Pre-Workouts Amp You Up. 420 FLEX Locks You In.

Calm focus. Steady energy. A THC-infused mind-muscle connection your body was already built for. Berry Blaze Lemonade is the first pre-workout formulated around your endocannabinoid system.

4.9 45 Verified Reviews

3rd Party Lab Tested  ·  21+  ·  Hemp Derived  ·  Federally Compliant

Try Berry Blaze Lemonade
420 Flex Berry Blaze Lemonade — THC Pre-Workout Sachet
5mg Delta-9 THC
150mg Natural Caffeine
300mg L-Theanine

Normal pre-workouts are built for stimulation,
not performance.
There's a difference.

The best workouts don't happen when anxiety peaks — they happen when the noise drops, focus sharpens, and effort feels sustainable. Your supplements should work with your nervous system, not against it.

The brain is part of the workout.

Mind-muscle connection, focus, and enjoyment aren't soft goals — they're performance variables that drive consistency.

Cannabis and performance aren't opposites.

At the right dose, in the right formula, THC supports the endocannabinoid system to create a calmer, more locked-in training state.

Overstimulation works against peformance.

More caffeine, more beta-alanine, more stimulants — they create the sensation of intensity while quietly eroding the focus and recovery that actually build performance.

The Mechanism

Your body already
has an endocannabinoid system built for exercise

During exercise, your body produces anandamide — often called the “bliss molecule” — which helps explain the calm, euphoric, locked-in feeling people associate with runner’s high. THC interacts with the same endocannabinoid system, which is why a precise 5mg dose can help support the focus, enjoyment, and mind-muscle connection your body is already trying to create during training.

5mg Delta-9 THC Hemp-derived. Supports endocannabinoid system for a smoother, more euphoric training state.
300mg L-Theanine Paired with caffeine to eliminate jitters and sharpen focus quality — not just intensity.
150mg Natural Caffeine From green coffee. Steady energy without the spike-and-crash feel of overloaded stimulant formulas.
4.2g L-Citrulline Fully dosed for pump, endurance, and output. No proprietary blends — you see exactly what you’re getting.
See the Full Formula & Science → Third-party tested. COAs available.
Works Cited
  1. Fuss, J., Steinle, J., Bindila, L., Auer, M. K., Kirchherr, H., Lutz, B., & Gass, P. (2021). A runner's high depends on cannabinoid receptors in mice. Proceedings of the National Academy of Sciences, 118(6), e2113929118. doi.org/10.1073/pnas.2113929118
  2. Dietrich, A., & McDaniel, W. F. (2004). Endocannabinoids and exercise. British Journal of Sports Medicine, 38(5), 536–541. doi.org/10.1136/bjsm.2004.011718
  3. Raichlen, D. A., Foster, A. D., Gerdeman, G. L., Seillier, A., & Bhattacharya, A. (2012). Wired to run: exercise-induced endocannabinoid signaling in humans and cursorial mammals with implications for the "runner's high." Journal of Experimental Biology, 215(8), 1331–1336. doi.org/10.1242/jeb.063677
This Is For You If…

420 Flex isn't for everyone.
It's for athletes who train with intention.

  • You're a runner, lifter, or martial artist who realized anxiety was the enemy — not effort.
  • You've already experimented with caffeine and THC on your own. You want precision, not guesswork.
  • You want to actually look forward to training, not just survive it.
  • You're done with pre-workouts that fry your nervous system for 20 minutes then leave you crashing.
  • You want to be seen as a focused athlete using a smarter tool — not a stoner at the gym.

★★★★★

"It cuts the veneer of anxiety and overthinking. I ran two miles 20 minutes after trying it for the first time. I hadn't run in 6 years — I'd been trying, but kept stopping. This takes all the guesswork out completely."

Matt Judkins Runner

Verified Purchase

Athlete training with 420 Flex — focused, locked in, in the zone
In The Zone

The difference between grinding through
and actually locking in.

The athletes who keep showing up aren’t always the ones with more discipline — they’re the ones who found a way to make training feel good enough to repeat. Berry Blaze was built for that state: calm, focused, connected, and actually present in the work.

Real Athletes. Real Sessions.

See What Athletes Are Saying

45 verified reviews  ·  4.9 average rating

Kyle R.
★★★★★

"Already was trying to find the right mix. This nails it."

I already was mixing caffeine and weed, but it was inconsistent every time. This takes all the guesswork out completely. I feel dialed from warm-up to the last rep. Absolutely love this product!

Powerlifter ✓ Verified Purchase
Sam C.
★★★★★

"Smooth energy — no anxiety, no crash."

I've tried so many pre workouts that either make me feel cracked out or don't do anything. 420 Flex hits different. Energy is smooth, focus is sharp, and I don't crash or feel icky after.

CrossFit ✓ Verified Purchase
Jordan T.
★★★★★

"The THC is the difference — and it's subtle in the best way."

I was skeptical about THC before training. Started with a half serving as recommended, and the difference is hard to explain. It's not a buzz, more like the volume on my internal chatter just gets turned down. Mind-muscle connection is real.

BJJ / Jiu Jitsu ✓ Verified Purchase
See All 45 Reviews →
420 Flex Berry Blaze Lemonade sachet — tart lemonade mixed berry
Our First Product

Berry Blaze Lemonade

THC-Infused Pre-Workout

★★★★★ 4.9 · 45 reviews

"We kept noticing the same thing: athletes who train with cannabis are having better sessions — more focused, more enjoyable, more repeatable. No one is building products around that, so we are." — Camden Sharp, Co-Founder

Calm Focus

THC + L-theanine help quiet mental noise so you can lock in.

Steady Energy

Natural caffeine from green coffee — no spike, no crash

Pump + Endurance

Fully dosed citrulline and betaine for output that lasts the full session.

Clean Formula

Vegan-friendly, gluten-free, monk fruit sweetened, no artificial dyes

Meet Berry Blaze → See the full formula & science →
Non-Negotiables

What we won't
compromise on.

Every brand claims quality. Here's what it means to us in practice.

View Lab Results (COA) →

Full Transparency

Every ingredient. Every amount. Listed clearly on the label. No proprietary blends, no mystery dosing, and no guessing what you’re putting in your body.

Third-Party Tested

Every batch is tested by an independent lab, with COAs available so you can verify what’s inside before you try it.

Clean Formulas Only

No artificial sweeteners, no synthetic dyes, no sketchy fillers. Vegan-friendly, gluten-free, monk fruit and organic stevia sweetened. Performance without compromise.

Built for the Full Session

Formulated to support focus, endurance, and recovery from warm-up to last rep — not just the first 20 minutes. Smooth energy means you finish strong, not crashed on the floor.

FOR THE HIGHEST ACHIEVERS.

420 Flex is for athletes who train with intention — clean ingredients, honest labels, and a THC-infused formula built for calm focus, steady energy, and a mind-muscle connection that carries through the full session.

Try Berry Blaze See the Science →
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