Dr. Jekyll is a ProSupps pre-workout product name. It should not be treated as gym slang for a high-stimulant formula. Different Jekyll versions have different ingredient profiles, so the words Signature, Performance and Nightmare on the package matter.
Signature: the stimulant-free version
The manufacturer’s Dr. Jekyll Signature V2 page identifies this product as caffeine- and stimulant-free. The linked 30-serving Supplement Facts panel, checked October 13, 2026, specifies one 11 g scoop and lists:
- Beta-alanine: 3,200 mg.
- Creatine monohydrate: 2,500 mg.
- nooLVL inositol-enhanced bonded arginine silicate: 800 mg.
- Choline bitartrate and L-tyrosine: 500 mg each.
- Panax ginseng extract: 50 mg; ashwagandha root extract: 125 mg.
- CaloriBurn GP grains-of-paradise extract: 30 mg; black pepper extract: 5 mg.
The matrix totals group the individual ingredients; they are not extra amounts to add again. Signature’s lack of caffeine does not remove the need to check its botanicals, complete warnings and possible medication interactions.
Performance is a different formula
ProSupps also maintains a separate Dr. Jekyll Performance page. Its Strawberry Watermelon panel uses a 17.4 g scoop and 20 servings. It includes 6 g L-citrulline, 4 g betaine, 2 g tyrosine, 250 mg citicoline and 150 mg enfinity paraxanthine.
That panel does not declare a caffeine dose, but paraxanthine is a stimulant. It should not be described as the same stimulant-free formula as Signature. Nor should its paraxanthine amount be relabeled as an equivalent caffeine dose. The brand’s “low-stimulant” wording does not guarantee suitability before bed.
Using the label to make a decision
For the reviewed Signature product, ProSupps directs mixing one scoop with 8 oz cold water before exercise. The website’s front-package image and separate panel show differing weight details, another reason to follow the purchased container rather than calculate a dose from a photograph. Other serving sizes and dual-tub products require their own instructions.
NIH’s exercise-supplement review explains why studies of individual ingredients cannot automatically validate a complete blend. Beta-alanine tingles are not proof of better endurance, and adding another pre-workout changes the combined exposure.
ProSupps’ Signature warnings exclude pregnancy, nursing and people under 18, and caution against use with medical conditions or medications. If your goal is avoiding stimulants, verify the complete ingredient list and exact version first. A similar product name or a recommendation for Mr. Hyde is not a substitute for that check.
Product pages and existing offers
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Sources and review notes
Reviewed October 12, 2026. ProSupps Dr. Jekyll Signature V2. Signature 30-serving manufacturer facts panel. ProSupps Dr. Jekyll Performance. Performance Strawberry Watermelon manufacturer panel. NIH exercise supplement evidence. This is editorial guidance based on identified labels and sources, not a report of personal product testing. Product versions and offers can change.
