ProSupps: Mr. Hyde, Dr. Jekyll, Max Pump and HydroBCAA

ProSupps makes the Mr. Hyde and Dr. Jekyll pre-workouts. Here are the four products we link: Mr. Hyde Signature V2 (200 mg caffeine per scoop), the stimulant-free Dr. Jekyll Signature and Mr. Hyde Max Pump, and HydroBCAA, with every label dose, who should skip the stimulant, what Informed Choice lists and the brand’s FDA history.

By Kymata Health Editorial Sources cited inline Products checked on prosupps.com

ProSupps at a glance

4 products
Sold on
Amazon (our links); the brand also sells on prosupps.com
Run by
ProSupps USA LLC
Products listed
4 sports products
Prices, as shown
Check prices on Amazon
Certificate of analysis
None posted; see what the Informed Choice list names, under Testing

Who it suits

Sports products we list
  • Healthy adults who already use caffeine and want a dosed pre-workout: Mr. Hyde Signature V2 gives 200 mg caffeine with 3 g citrulline and 2.5 g creatine per scoop.
  • People who train late or avoid caffeine: Dr. Jekyll Signature and Mr. Hyde Max Pump list no caffeine.
  • People who want an amino acid drink during long sessions: HydroBCAA, caffeine-free.

What to know first

5 points
  • Mr. Hyde Signature V2 has 200 mg caffeine per scoop and the label allows two scoops a day (400 mg). It is not for anyone under 18, pregnant or breastfeeding, with a heart condition or high blood pressure, or on stimulant medicines. Do not stack it with other caffeine, and start with half a scoop.
  • Informed Choice, a third-party program that tests sports supplements for substances banned in sport, names “Mr. Hyde Signature Series”, “Dr. Jekyll Stim Free SIGNATURE” and “Max Pump” (under Mr. HYDE Signature, the caffeine-free pump) on its public list of Oct 28, 2026. HydroBCAA is not on it.
  • In 2017 the FDA sent ProSupps a warning letter over manufacturing-practice and adverse-event-reporting violations, and older pre-workout lots were recalled in 2016 and 2017 for picamilon, an unapproved ingredient, and in 2015 for more yohimbine than the label declared. The recalls are recorded as terminated.
  • Every link goes to Amazon, where prices change, so we print none: check the price on Amazon.
  • These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.

Partner links may earn us a commission. How partner links work

Who ProSupps is

The makers

prosupps.com

ProSupps USA LLC is a sports nutrition company in Plano, Texas, known for the Mr. Hyde pre-workouts (Signature V2: 200 mg caffeine per scoop) and the stimulant-free Dr. Jekyll.

We link four of its products on Amazon through Levanta, the program it uses for partners. Its higher-stimulant pre-workouts, fat burners and protein powders are not listed here.

What the brand states

From prosupps.com
Mr. Hyde Signature V2 label
1 scoop: 200 mg caffeine, 3 g L-citrulline, 2.5 g creatine monohydrate, 2 g beta-alanine, 1 g betaine, 1 g L-tyrosine; up to 2 scoops in 24 hours. Source: amazon.com/dp/B0F4LY36KF, read Oct 28, 2026
Dr. Jekyll Signature label
1 scoop: 3.2 g beta-alanine, 2.5 g creatine monohydrate, 800 mg nooLVL; no caffeine. Source: amazon.com/dp/B0CRMS8659, read Oct 28, 2026
Mr. Hyde Max Pump label
1 scoop: 4 g L-citrulline, 3.2 g beta-alanine, 3 g betaine, 1 g arginine AKG; no caffeine. Source: amazon.com/dp/B0BVG5CJRC, read Oct 28, 2026
HydroBCAA label
1 scoop: 7 g BCAAs (2:1:1) and 3 g other essential amino acids; caffeine-free. Source: amazon.com/dp/B077FTNWL7, read Oct 28, 2026

Testing and lab results

ProSupps says every product is third-party tested. Informed Choice’s public list (Oct 28, 2026) names the Mr. Hyde Signature (Signature V2: 200 mg caffeine per scoop), Dr. Jekyll Stim Free Signature and Max Pump (caffeine-free) lines; HydroBCAA is not on it. Below is the FDA record we found.

What we checked

Checked Oct 28, 2026
  • Informed Choice list: Names “Mr. Hyde Signature Series”, “Dr. Jekyll Stim Free SIGNATURE” and “Max Pump” (under Mr. HYDE Signature; the caffeine-free pump); the only HydroBCAA listed is HydroBCAA + Energy, a different product. Source: choice.wetestyoutrust.com/sites/default/files/generated-pdf/file.pdf, read Oct 28, 2026
  • Brand claim: “Rigorous third-party testing … every batch” on each listing; no certificate of analysis posted. Source: amazon.com/dp/B0F4LY36KF, read Oct 28, 2026

Shop the ProSupps lineup

Each button opens that product's listing on Amazon. Listed in the maker's own groups, not ranked.

ProSupps products we list

4 products
  • ProSuppsMr. Hyde Signature V2 Pre-Workout with Creatine, Fruit Punch

    Caution: 200 mg caffeine per scoop (label); the label allows up to 2 scoops (400 mg caffeine) in 24 hours. Stimulant: not for anyone under 18, pregnant or breastfeeding, with a heart condition or high blood pressure, or taking stimulant medicines. Do not combine with coffee, energy drinks or other caffeine; start with half a scoop.

    30 servings (12.9 oz)

    Check price on AmazonChecked Oct 28, 2026
    Check price on Amazon (paid link, opens in new tab)
  • ProSuppsDr. Jekyll Signature Stimulant-Free Pre-Workout with Creatine

    Caution: No caffeine on the label, but a multi-ingredient blend with ashwagandha and ginseng: the label says not for anyone under 18, pregnant or breastfeeding, or taking prescription or over-the-counter medicines. Contains milk. Beta-alanine can cause harmless skin tingling.

    30 servings

    Check price on AmazonChecked Oct 28, 2026
    Check price on Amazon (paid link, opens in new tab)
  • ProSuppsMr. Hyde Max Pump Stimulant-Free Pre-Workout, Blue Razz

    Caution: Caffeine-free. Citrulline lowered blood pressure in pooled trials: ask your clinician first if you take blood-pressure medicines, nitrates or ED medicines (PDE5 inhibitors). Beta-alanine can cause harmless skin tingling.

    20 servings

    Check price on AmazonChecked Oct 28, 2026
    Check price on Amazon (paid link, opens in new tab)
  • ProSuppsHydroBCAA, BlackBerry Lemonade

    Caution: Ask your clinician first if you take levodopa: amino acids compete with it for absorption.

    30 servings

    Check price on AmazonChecked Oct 28, 2026
    Check price on Amazon (paid link, opens in new tab)

Sizes, prices and ingredients are from each product's own page on the date shown; confirm them before you buy. Listing a product is not a claim that it works.

Partner links may earn us a commission. How partner links work

What is in each product

Format, sizes and the full ingredient list as each product page prints them.

  1. Mr. Hyde Signature V2 Pre-Workout with Creatine, Fruit Punch

    Pre-workout with caffeine

    A stimulant pre-workout with 200 mg caffeine per scoop, plus citrulline, creatine, beta-alanine, betaine and tyrosine. One scoop 15 to 30 minutes before training.

    Sizes and prices, as shown
    • 30 servings (12.9 oz): Check price on Amazon
    Ingredients, as listed
    Per scoop (12.18 g): sodium (as Himalayan rock salt) 75 mg, L-citrulline 3 g, creatine monohydrate 2.5 g, beta-alanine 2 g, betaine anhydrous 1 g, L-tyrosine 1 g, caffeine anhydrous 200 mg, Himalayan rock salt 200 mg. Other ingredients: citric acid, natural and artificial flavors, malic acid, sucralose, silicon dioxide, calcium silicate, acesulfame potassium, fruit and vegetable juice (color).

    Caution: 200 mg caffeine per scoop (label); the label allows up to 2 scoops (400 mg caffeine) in 24 hours. Stimulant: not for anyone under 18, pregnant or breastfeeding, with a heart condition or high blood pressure, or taking stimulant medicines. Do not combine with coffee, energy drinks or other caffeine; start with half a scoop.

    Source: amazon.com/dp/B0F4LY36KF, read Oct 28, 2026

  2. Dr. Jekyll Signature Stimulant-Free Pre-Workout with Creatine

    Stimulant-free

    A stimulant-free pre-workout (no caffeine on the label) with beta-alanine, creatine and nooLVL, plus choline, tyrosine, ginseng and ashwagandha. One scoop 15 to 30 minutes before training.

    Sizes and prices, as shown
    • 30 servings: Check price on Amazon
    Ingredients, as listed
    Per scoop (11 g): beta-alanine 3,200 mg, creatine monohydrate 2,500 mg, nooLVL (inositol-enhanced bonded arginine silicate) 800 mg, choline bitartrate 500 mg, L-tyrosine 500 mg, Panax ginseng root extract 50 mg, ashwagandha root extract 125 mg, grains of paradise seed extract 30 mg, black pepper extract 5 mg. Contains milk.

    Facts from the Blue Razz label image on the Amazon listing our link opens (the flavor offered there can change).

    Caution: No caffeine on the label, but a multi-ingredient blend with ashwagandha and ginseng: the label says not for anyone under 18, pregnant or breastfeeding, or taking prescription or over-the-counter medicines. Contains milk. Beta-alanine can cause harmless skin tingling.

    Source: amazon.com/dp/B0CRMS8659, read Oct 28, 2026

  3. Mr. Hyde Max Pump Stimulant-Free Pre-Workout, Blue Razz

    Stimulant-free

    A caffeine-free pump formula (no caffeine on the label): citrulline, beta-alanine, betaine and arginine. Sold on its own or stacked with another pre-workout.

    Sizes and prices, as shown
    • 20 servings: Check price on Amazon
    Ingredients, as listed
    Per scoop (14.3 g): vitamin C (as ascorbic acid) 60 mg, L-citrulline 4 g, beta-alanine 3.2 g, betaine anhydrous 3 g, L-arginine alpha-ketoglutarate 2:1 1 g. Other ingredients: natural and artificial flavors, citric acid, malic acid, silicon dioxide, calcium silicate, sucralose, acesulfame potassium.

    Caution: Caffeine-free. Citrulline lowered blood pressure in pooled trials: ask your clinician first if you take blood-pressure medicines, nitrates or ED medicines (PDE5 inhibitors). Beta-alanine can cause harmless skin tingling.

    Source: amazon.com/dp/B0BVG5CJRC, read Oct 28, 2026

  4. HydroBCAA, BlackBerry Lemonade

    Amino acids

    A caffeine-free amino acid drink powder: 7 g BCAAs in a 2:1:1 ratio and a 3 g blend of the other essential amino acids, with sodium and potassium. The current tub is labelled HydroBCAA + EAA.

    Sizes and prices, as shown
    • 30 servings: Check price on Amazon
    Ingredients, as listed
    Per scoop (14.15 g): sodium 100 mg, potassium 150 mg; 2:1:1 BCAA matrix 7 g (L-leucine 3.5 g, L-isoleucine 1.75 g, L-valine 1.75 g); essential amino acid matrix 3 g (L-lysine, L-threonine, L-phenylalanine, L-methionine, L-histidine, L-tryptophan). Sweetened with sucralose and acesulfame potassium.

    Caution: Ask your clinician first if you take levodopa: amino acids compete with it for absorption.

    Source: amazon.com/dp/B077FTNWL7, read Oct 28, 2026

What the research says about the key ingredients

We grade the human research on caffeine, beta-alanine and citrulline on their own pages, study by study. No published trial has tested a ProSupps product, and nothing here is a claim for any of these products.

  4. Citrulline and repetitions

    L-citrulline

    Grade C, limited (Grade C)

    Citrulline malate added about 3 repetitions to failure in pooled trials; no endurance benefit was found.

    Trials used 6 to 8 g of citrulline malate, about 3.4 to 4.5 g of L-citrulline. Pooled trials also found slightly lower blood pressure, which matters if you take blood-pressure medicines.

    Our citrulline pageCitrulline malate repetitions meta-analysis 2021 (PMID 34010809) (opens in new tab)L-citrulline blood pressure meta-analysis 2025 (PMID 40789388) (opens in new tab)

How we grade: A = several randomized trials or a meta-analysis; B = at least one adequately sized randomized trial; C = small or mixed trials; D = a single small trial, lab or animal data; no effect shown = adequately sized trials that found none. Not graded = a fact about another use, with no trial of the question to grade.

Safety notes

Skip the stimulant, or talk to your clinician first, if

Not medical advice
  • You are under 18, pregnant or breastfeeding: Mr. Hyde Signature V2 has 200 mg caffeine per scoop, and the Dr. Jekyll label also says not for these groups. Our caffeine page
  • You have a heart condition or high blood pressure, or take stimulant medicines (for ADHD, for example): skip the caffeinated pre-workout. Our caffeine page
  • You already have coffee, energy drinks or another pre-workout that day: do not stack caffeine sources. Start with half a scoop to check how you react. Our caffeine page
  • You take blood-pressure medicines, nitrates or ED medicines: citrulline in Mr. Hyde Signature V2 (200 mg caffeine per scoop) and citrulline and arginine AKG in Max Pump (caffeine-free) can add to their effect. Our citrulline page
  • You take levodopa: the amino acids in HydroBCAA compete with it for absorption.
  • You compete in tested sport: check each product and lot on the Informed Choice list yourself before you use it.
  • These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.

Related guides

Keep reading

6 pages

Questions about ProSupps

Questions

5 answers · checked Oct 28, 2026

How much caffeine is in Mr. Hyde Signature V2?

200 mg per scoop, from caffeine anhydrous (label). The label allows up to two scoops, 400 mg, in 24 hours, which is the whole daily amount the FDA cites for most healthy adults, so do not add coffee or energy drinks.

Which ProSupps pre-workout has no caffeine?

Dr. Jekyll Signature and Mr. Hyde Max Pump list no caffeine. Dr. Jekyll still contains ashwagandha and ginseng, so its label keeps the same age, pregnancy and medicine warnings.

Are ProSupps products Informed Choice certified?

Informed Choice’s public list of Oct 28, 2026 names “Mr. Hyde Signature Series”, “Dr. Jekyll Stim Free SIGNATURE” and “Max Pump” under ProSupps’ Mr. HYDE Signature. HydroBCAA is not on it. The listing is about banned-substance testing, not caffeine: Mr. Hyde Signature V2 still has 200 mg caffeine per scoop. Athletes should check the list for their own product and lot.

What was the FDA warning letter about?

In February 2017 the FDA cited ProSupps for dietary supplement manufacturing-practice violations (complaints, quality control, label specifications, returns, contract manufacturers) and for not submitting a serious adverse event report. Separately, older pre-workout lots were recalled in 2016 and 2017 for picamilon, and one lot in 2015 for more yohimbine than its label declared; FDA records those recalls as terminated.

Why is there no price on this page?

Every link goes to Amazon, where prices change often. We print none rather than a stale one.

Sources

Product names, sizes, prices and ingredients come from ProSupps's own pages, read Oct 28, 2026; those pages are listed by address. Studies were read on PubMed the same day.

Every source

12 sources
  1. 1Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis. Nutrients 2022. (opens in new tab) PMID 36615805
  2. 2Age- and dose-specific effects of caffeine on sleep: A meta-analysis of controlled crossover trials. Sleep Med 2025. (opens in new tab) PMID 41124973
  3. 3β-alanine supplementation to improve exercise capacity and performance: a systematic review and meta-analysis. Br J Sports Med 2017. (opens in new tab) PMID 27797728
  4. 4Acute Effect of Citrulline Malate on Repetition Performance During Strength Training: A Systematic Review and Meta-Analysis. Int J Sport Nutr Exerc Metab 2021. (opens in new tab) PMID 34010809
  5. 5Does l-citrulline supplementation and watermelon intake reduce blood pressure in middle-aged and older adults? A systematic review and meta-analysis. Clin Nutr ESPEN 2025. (opens in new tab) PMID 40789388
  6. 6Informed Choice certified products list (generated Oct 28, 2026)
  7. 7FDA warning letter to ProSupps USA LLC, Feb 3, 2017 (opens in new tab)
  8. 8openFDA food enforcement reports: ProSupps recalls (opens in new tab)
  9. 9ProSupps Mr. Hyde Signature V2 Pre-Workout with Creatine, Fruit Punch: Amazon listing
  10. 10ProSupps Dr. Jekyll Signature Stimulant-Free Pre-Workout with Creatine: Amazon listing
  11. 11ProSupps Mr. Hyde Max Pump Stimulant-Free Pre-Workout, Blue Razz: Amazon listing
  12. 12ProSupps HydroBCAA, BlackBerry Lemonade: Amazon listing

Educational only. Not medical advice. Some links earn us a commission: kymatahealth.com/affiliate-disclosure.