ProSupps
Mr. Hyde Signature
Legendary high-stim formula — the OG intensity pre-workout
Last updated: February 18, 2026
Quick Summary
Mr. Hyde Signature is the OG high-stim pre-workout with a staggering 410mg caffeine matrix. Built for stim veterans who want maximum intensity at a budget price.
Pros & Cons
Pros
- +Massive 410mg caffeine for extreme energy
- +Affordable at ~$1.00 per serving
- +Includes TeaCrine for extended energy without crash
- +Banned substance tested for competitive athletes
Cons
- −410mg caffeine is excessive for most users
- −Some ingredients below clinical doses
- −Not suitable for beginners or caffeine-sensitive individuals
Key Ingredients
| Ingredient | Dose |
|---|---|
| Beta-Alanine | 2.5g |
| Creatine HCl | 1g |
| L-Citrulline | 2g |
| Caffeine Matrix | 410mg |
| TeaCrine | 62.5mg |
| Nitrosigine | 750mg |
Full Review
Mr. Hyde has been a legend in the high-stim pre-workout space for years. The Signature version carries on the tradition of delivering face-melting energy that only experienced stimulant users can handle.
Energy & Focus: 410mg from a multi-source caffeine matrix is no joke — this is one of the highest caffeine doses in any mainstream pre-workout. The addition of TeaCrine (62.5mg) extends the energy duration and helps prevent the dreaded crash. If you have a high caffeine tolerance and standard 200-300mg products feel like water, Mr. Hyde will remind you what pre-workout energy is supposed to feel like.
Performance: The performance ingredients are where Mr. Hyde makes compromises to hit its price point. L-citrulline at 2g is well below the clinical dose for pumps, and beta-alanine at 2.5g falls short of the 3.2g clinical threshold. Nitrosigine at 750mg is a nice inclusion but also below the typical 1.5g dose. The formula prioritizes energy over pumps.
Who Is This For: Experienced pre-workout users with established high caffeine tolerance. People who drink multiple cups of coffee daily, have used pre-workouts for years, and find moderate formulas underwhelming. This is absolutely NOT for beginners.
Safety Note: 410mg caffeine approaches the FDA's recommended daily limit of 400mg from caffeine alone. If you consume any other caffeine sources (coffee, energy drinks) on days you take Mr. Hyde, you'll exceed this limit. Use responsibly.
Value: At ~$1.00 per serving, Mr. Hyde delivers extreme energy at a budget price. The ingredient profile is energy-focused rather than comprehensive, but for stim veterans, that's exactly the point.
Taste & Mixability: Blue Razz and Fruit Punch are solid performers. The taste is good for the category — slightly artificial but palatable. Mixes clean with no issues.
The Bottom Line: Mr. Hyde Signature is purpose-built for one thing: maximum stimulant energy at a minimum price. It delivers on that promise with authority. The performance ingredients are modest, but if energy and intensity are your top priorities and you can handle 410mg caffeine, Mr. Hyde is a legendary choice.
Frequently Asked Questions
How much caffeine is in Mr. Hyde Signature?▼
Mr. Hyde Signature contains 410mg of caffeine per serving.
How many servings are in Mr. Hyde Signature?▼
Each tub of Mr. Hyde Signature contains 30 servings at a price of $29.99, which works out to $1.00 per serving.
What are the key ingredients in Mr. Hyde Signature?▼
The key ingredients include Beta-Alanine (2.5g), Creatine HCl (1g), L-Citrulline (2g), Caffeine Matrix (410mg), TeaCrine (62.5mg), Nitrosigine (750mg).
Is Mr. Hyde Signature good for beginners?▼
Mr. Hyde Signature contains 410mg of caffeine, which is a high stimulant dose. It's generally recommended for experienced pre-workout users. Beginners should consider starting with a lower-caffeine option.
What Others Are Saying
Insane energy for experienced stim users
Jake R.
October 31, 2025
Mr. Hyde Signature at 410mg total caffeine is one of the most stimulant-heavy products available. If you're a high-tolerance stim user who has plateaued on standard pre-workouts, this will remind you what intense energy feels like. Strong focus, powerful drive, and lasts my entire 90-minute session. Not for the faint-hearted.
Maximum energy, limited pump
Marcus E.
December 10, 2025
Mr. Hyde is all about the stimulant profile and it delivers on that front completely. The pump stack isn't as impressive as dedicated pump products, but the energy is absolutely fierce. I treat it more as a CNS stimulator than a full performance pre-workout. At $1/serving it's the cheapest extreme caffeine option available.
Ready to try Mr. Hyde Signature?
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