Why shop with us
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.
Jekyll & Hyde Signature Dual Tub / 50 Total Servings
Product guarantees
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
Nootropic + Power
Dr. Jekyll Nightmare Dual Tub
Stim Free Nootropic
Mr. Hyde Signature Dual Tub
Intense Energy Pre-Workout
Mr. Hyde Nightmare Dual Tub
Sustained Energy + Creatine
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 | 🔴🔴⭕⭕ | 🔴🔴🔴🔴 | 🔴🔴⭕⭕ |
RESULTS DON'T LIE.
-
Rated 5 out of 5
Worth It!
Great concept and amazing flavors--literally 3 in 1!!!
-
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.
-
Rated 5 out of 5
Making the product a dual tub was AMAZING!
Making this product a dual tub was AMAZING ‼️🔥
-
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): Hyde Signature Dual Flavor Tub, Hyde Nightmare Dual Flavor Tub, 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 thedifference 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. Your sleep stays intact, your performance doesn't.
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.