MASTERBOTH
Every person has two sides. The locked-in precision of Jekyll. The unrelenting drive of Hyde. Some days you need one. Some days you need everything.
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banned substancetested
effectivelydosed
#1 pre-workoutin the U.S.
no FD&Cdyes
ONE TUB.TWO FORMULAS.
Two independently sealed chambers. Zero cross-contamination. Scoop Jekyll, scoop Hyde, or scoop both — engineered so both formulas stay exactly as dosed.
DUAL CHAMBER LOCK:
Two sealed compartments in a single tub keep each formula pure until the scoop hits.INDEPENDENT DOSING:
Full clinical dose in each chamber. Run one, run the other, or run both at full strength.BUILT TO STACK:
Jekyll's stim-free precision and Hyde's high-stim intensity are formulated to combine cleanly.ONE SCOOP. TOTAL CONTROL:
No mixing bowls, no guesswork. The tub does the separating so you can do the deciding.
FIVE Tubs.Zero Compromises.
Jekyll & Hyde Nightmare Dual Tub
Dr. Jekyll Nightmare Dual Tub
Mr. Hyde Signature Dual Tub
Mr. Hyde Nightmare Dual Tub
FIND YOUR FORMULA -STIM
| product name |
Dr. Jekyll Signature
|
Mr. Hyde Nightmare
|
Mr. Hyde Xtreme
|
Mr. Hyde Infinite
|
|---|---|---|---|---|
| caffeine | 200mg | 300mg | 462.5mg | 190mg |
| HYDRATION | ✅ | ✅ | ❌ | ❌ |
| Banned Substance Tested | ✅ | ✅ | ❌ | ❌ |
| Creatine Monohydrate | 2.5 g | 0 g | 2.5 g | 2.5 g |
| Betaine anhydrous | 1g | 0g | 0g | 1.5g |
| BETA ALANINE | 2g | 3.2g | 3.2g | 3.2g |
| citrulline | 3g | 6g | 3g | 5g |
| ENERGY | 🔴🔴⭕⭕ | 🔴🔴🔴⭕ | 🔴🔴🔴🔴 | 🔴🔴🔴⭕ |
| FOCUS | 🔴🔴⭕⭕ | 🔴🔴🔴⭕ | 🔴🔴🔴⭕ | 🔴⭕⭕⭕ |
| PUMPS | 🔴⭕⭕⭕ | ⭕⭕⭕⭕ | 🔴🔴⭕⭕ | 🔴🔴🔴🔴 |
FIND YOUR FORMULA -STIM-FREE
| product name |
Dr. Jekyll Signature
|
Mr. Hyde Max Pump
|
Dr. Jekyll Nightmare
|
|---|---|---|---|
| caffeine | 0mg | 0mg | 0mg |
| HYDRATION | ✅ | ❌ | ✅ |
| Banned Substance Tested | ✅ | ❌ | ✅ |
| Creatine Monohydrate | 2.5g | 0 g | 0 g |
| Betaine anhydrous | 0g | 3g | 2g |
| BETA ALANINE | 3.2g | 3.2g | 0g |
| citrulline | 0g | 4g | 6g |
| ENERGY | 🔴⭕⭕⭕ | ⭕⭕⭕⭕ | 🔴⭕⭕⭕ |
| FOCUS | 🔴🔴🔴⭕ | ⭕⭕⭕⭕ | 🔴🔴🔴🔴 |
| PUMPS | 🔴🔴⭕⭕ | 🔴🔴🔴🔴 | 🔴🔴⭕⭕ |
MORE WAYS TOSTACK
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Dr. Jekyll Signature V2
Stim Free, Entry Level, Nootropic
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Mr. Hyde Signature V2
Stim Free, Entry Level, Nootropic
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Dr. Jekyll Nightmare
Stim Free, Entry Level, Nootropic
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Mr. Hyde Nightmare V2
Stim Free, Entry Level, Nootropic
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Mr. Hyde Max Pump
Stim Free, Entry Level, Nootropic
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Mr. Hyde Xtreme
Stim Free, Entry Level, Nootropic
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Pro Series Mr. Hyde Infinite Fully Dosed Pre-Workout
Stim Free, Entry Level, Nootropic
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Mr. Hyde Signature On-The-Go 12 Sticks
Stim Free, Entry Level, Nootropic
RESULTS DON'T LIE.
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Rated 5 out of 5
Worth It!
Great concept and amazing flavors--literally 3 in 1!!!
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Rated 5 out of 5
My Fav Pre
This is hands down my favorite pre! The flavor is so nostalgic, it legit tastes like a Baby Bottle Pop. It's super smooth, not gritty or chalky at all, and the pump I get is always amazing. I also love that it has two sides, with a non-stim option, so I can use it any time of the day.
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Rated 5 out of 5
Best of Both Worlds
I work out at all times of the day - morning afternoon and night. Sometimes I need caffeine and sometimes I just need some pump and extra focus. With the Jekyll and Hyde combo I can dial in my workout to exactly what I need for the day.
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Rated 5 out of 5
Making the product a dual tub was AMAZING!
Making this product a dual tub was AMAZING ‼️🔥
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Rated 5 out of 5
The Best custom pre-workout
This pre-workout is great because you get the luxury of truly customizing your pre-workout. You can use the non-stim side or only the stimulant side. The possibilities are limitless.
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Rated 5 out of 5
Insane Pumps, flavors are both equally good.
Insane pumps, flavors are both equally good, especially together.
QUESTIONS.ANSWERED.
What is the Dual Tub format?
One tub, two sides — but not always the same kind of split. Some Dual Tubs are dual-flavor: the same formula in two flavors, sealed separately, that combine into a third flavor when you mix them. Others are dual-formula: Jekyll on one side, Hyde on the other, each independently dosed — and those flavors combine into a third flavor too. Either way, nothing crosses over until you decide to mix it, so you're always in control of what you're running and how it tastes.
Dual-Flavor Tubs (same formula, two flavors → third flavor blend): Mr. Hyde Signature Dual Flavor Tub, Mr. Hyde Nightmare Dual Flavor Tub, Dr. Jekyll Nightmare Dual Flavor Tub
Dual-Formula Tub (two formulas, two flavors → stacked formula + third flavor blend): Jekyll & Hyde Nightmare Dual Formula Tub and Jekyll & Hyde Signature Dual Formula Tub
What is the difference between Jekyll and Hyde products?
Jekyll products are stimulant-free and focus on enhancing mental clarity, blood flow, and mind-muscle connection without caffeine. Hyde products are stimulant-powered formulas designed to increase energy, drive, and adrenaline. Both lines can be used individually or stacked for a customizable pre-workout experience depending on your training goals and caffeine preference.
Can I stack Jekyll & Hyde together?
Yes. They're designed to work together. Jekyll is completely stim-free, so it complements Hyde's caffeine perfectly. Start with a half scoop of each to assess tolerance.
What is the difference between Mr. Hyde Signature & Mr. Hyde Nightmare?
Mr. Hyde Signature is a more approachable daily pre-workout with a moderate stimulant load and flexibility for one or two scoops. Mr. Hyde Nightmare delivers a higher stimulant dose with advanced nootropics, pump ingredients, and performance drivers for those who want an extra edge. †
What is the difference between Dr. Jekyll Signature & Dr. Jekyll Nightmare?
Signature is your daily driver — 6g citrulline and 1.5g betaine anhydrous for clean, stim-free pumps and steady endurance support, built for consistent training rather than just max-effort days. Nightmare is that same precision, maximized — 12g citrulline, a 4,700mg nootropic complex, and 2g betaine anhydrous for elevated focus and full-spectrum pumps. Both are completely stim-free, so the difference isn't caffeine — it's dose and depth, Signature for every day, Nightmare for when you've outgrown it.
What formula should I take for an evening workout?
Run Jekyll for evening sessions. Zero caffeine, all focus.
How do I know if I should use Jekyll or Hyde?
Take the 60-second quiz, or think about your training day: need clarity and control, run Jekyll. Need power and intensity, run Hyde. Need both, stack them. Click here to take the quiz.
SHOP FEATUREDMERCH
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Master Both Fitted Tee - Black
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Jekyll & Hyde Crop Ribbed Tank - Black
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Duality Oversized Cropped Tee
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JEKYLL & HYDE Shaker V2