Cannibal Ferox AMPeD Pre-Workout Review

Cannibal Ferox AMPeD is an ultra high-stim pre-workout from Chaos and Pain. It contains over 500 mg of caffeine and 400 mg of DMHA per serving, making it one of the most loaded pre-workout ingredient labels of 2023.

I’d only recommend Cannibal Ferox AMPeD to the most experienced pre-workout users. Fans of adventurous, overloaded labels will want to try this one. But be warned: it does not taste good at all. If taste is important to you, I’d skip this one.

Thank you to Chaos and Pain for providing this product for Lift Vault to review!

Where to Buy Cannibal Ferox AMPeD

You can buy Cannibal Ferox AMPeD from the following retailers:

• Chaos and Pain
• Nutri Cartel

Experience

Side Effects

Surprisingly, I didn’t feel any negative side effects from Cannibal Ferox AMPeD. I say “surprisingly” because the ingredient label does look intimidating. The 400 mg of DMHA was not overwhelming and I did not feel excessive negative effects from the yohimbine HCL and alpha yohimbine combination. In fact, I wouldn’t have guessed there was more than 1 mg of alpha yohimbine in each serving.

Experienced pre-workout users should expect very few side effects. However, if you’re looking for a beginner pre-workout, this is not it.

Flavor

I had the pineapple express flavor and I must say it does not taste good at all.

The flavor stars with a pleasant pineapple taste which quickly shifts into an acidic finish. I’m not surprised that it doesn’t taste good given all of the ingredients it contains, but if taste matters at all to you, I’d advise against buying this.

If you don’t care about taste and are mainly seeking effects, then I wouldn’t worry about the flavor.

Dose/Scoop Size

A full serving of Cannibal Ferox AMPeD is about 3/4 of the provided scoop.

Do not consume a level scoop, as that will be about 33% more than a full serving.

Ingredients

Below you’ll find the ingredient breakdown for Cannibal Ferox AMPeD Pre-Workout. To learn more, check out our guide on the best pre-workout ingredients.

L-Citrulline Malate 2:1 – 8,000 mg

L-Citrulline is an amino acid that converts to arginine in the kidneys and drives nitric oxide production, which is what produces the pump. At a 2:1 ratio, 8,000 mg of citrulline malate delivers roughly 5,300 mg of actual citrulline.

That clears the clinical range comfortably. Most pre workouts land between 6,000 and 8,000 mg of citrulline malate and plenty of stim-heavy formulas cut it to 4,000 mg to fund the stimulants. Chaos and Pain did not do that here.

Creatine Monohydrate – 3,500 mg

Creatine monohydrate is the most thoroughly researched strength supplement there is, and it works through daily saturation rather than an acute pre workout effect.

3,500 mg is short of the 5 g daily maintenance dose, so treat it as a contribution toward your daily total rather than the whole thing. If you already take creatine separately, this is a bonus. If this is your only source, you are underdosed.

Beta-Alanine – 3,200 mg

Beta-alanine raises muscle carnosine, which buffers acid during sustained high-rep work. It also causes the tingling that people either love or hate, and that tingle is not a measure of how well the product works.

3,200 mg is exactly the clinical dose. Like creatine it needs consistent daily intake over three to five weeks before it does anything, so a single serving on a training day is not where the benefit comes from.

HydroPrime (65% Glycerol) – 2,500 mg

HydroPrime is a stabilised glycerol powder. Glycerol pulls water into muscle tissue, which produces a fuller, heavier pump than nitric oxide ingredients manage on their own.

At 65% concentration, 2,500 mg yields about 1,625 mg of glycerol. The usual effective range runs from 1 to 3 grams, so this sits in the middle of it. Drink more water than you think you need with this in the formula, because that is where the water is going.

Arugula Extract – 1,000 mg

Listed on the label as Eruca vesicaria in the branded NitroRocket form. Arugula is a dietary nitrate source, and nitrate raises nitric oxide through a completely different pathway than citrulline, so the two stack rather than overlap.

1,000 mg is the dose NitroRocket’s own research uses. Pairing it with 8 g of citrulline malate is a deliberate two-pathway pump approach rather than padding.

Taurine – 1,000 mg

Taurine is an amino acid with a scattered set of modest benefits: cell hydration, some support for blood flow, and a possible reduction in cramping.

1,000 mg is a genuinely useful amount. Most pre workouts include 500 mg or less, which is closer to label decoration, so this is one of the quieter places the formula is more honest than average.

BioCreat (Fenugreek Extract) – 900 mg

BioCreat is a branded fenugreek extract included to improve creatine uptake into muscle.

The supporting research is thin and mostly manufacturer-run, so I would not count on it doing much. It is not a harmful inclusion, but of everything on this label it is the ingredient I would be least disappointed to see replaced by more creatine.

L-Tyrosine – 750 mg

L-Tyrosine is a precursor to dopamine and noradrenaline, and the research supports it most clearly for maintaining cognitive performance under acute stress rather than for producing focus on its own.

750 mg is on the low side. Studies generally use 1 to 2 grams, and many pre workouts run 1,000 to 1,500 mg. With this much stimulant in the formula, more tyrosine would have been the sensible pairing.

Alpha GPC – 600 mg

Alpha GPC is a choline source that crosses the blood-brain barrier more readily than choline bitartrate, which is why it appears in pre workouts sold on focus rather than pump. It is also studied for power output, though that research is thinner than the nootropic side.

600 mg is a real dose. 300 mg is the usual floor for a noticeable effect and plenty of products stop at 150 mg to get the name on the label. This one does not.

NeuroPEA – 500 mg

NeuroPEA is eria jarensis, standardised to 98% N-phenethyl dimethylamine citrate. It is a mood and euphoria stimulant that almost always appears alongside DMHA in high-stim formulas.

500 mg is the highest dose of eria jarensis I have seen in a pre workout. Typical inclusions run 150 to 300 mg. Combined with the DMHA below, this is where most of the formula’s character comes from.

Caffeine Anhydrous – 450 mg

Caffeine anhydrous is the standard immediate-release form, and the primary driver of energy and perceived focus in almost every pre workout.

450 mg on its own is already at the top of the normal range. Add the 100 mg of di-caffeine malate further down, which is roughly 75% caffeine by weight, and the total sits near 525 mg per serving. That is a large amount of caffeine, and it is the single strongest argument for starting at half a scoop.

Zynamite PX – 420 mg

Zynamite PX pairs a mango leaf extract standardised for mangiferin with a Sophora japonica extract standardised to 50% quercetin. It is used as a non-caffeine energy and cognitive ingredient, and there is reasonable research behind it for perceived exertion and reaction time.

420 mg is above the roughly 300 mg used in most of the published work, so this is a real inclusion rather than a label sprinkle.

English Walnut Extract (Juglans Regia) – 400 mg

This is DMHA, an exotic stimulant related to DMAA and known for hard energy, focus and mood lift. Juglans Regia is one of the forms it appears under, alongside 2-aminoisoheptane and kigelia africana.

400 mg is double the 200 mg that most DMHA products use, and it is one of the highest doses on the market. Worth noting against my own experience: I did not find it overwhelming, which is a reminder that a big number on a label does not always translate into a big effect.

Mucuna Pruriens – 150 mg

Velvet bean extract, standardised here to 98% L-dopa, so 150 mg delivers roughly 147 mg of actual L-dopa. It is included for dopamine support and a mild reduction in cortisol.

That is a strong standardisation. Most products use a 15% extract, which at the same weight would supply about 22 mg. Whether the mood effect is noticeable at this dose is another question, and honestly I have never felt much from mucuna in any product.

Di-Caffeine Malate – 100 mg

Di-caffeine malate is caffeine bound to malic acid, marketed as the smoother, longer-lasting form. It is about 75% caffeine by weight, so 100 mg supplies roughly 75 mg of caffeine.

The practical purpose is to extend the curve rather than add peak intensity, and to be a little gentler on the stomach than anhydrous caffeine alone. Remember to count it toward your total.

Epicatechin – 100 mg

Epicatechin is a flavanol from cocoa, sold on the claim that it inhibits myostatin and therefore removes a brake on muscle growth.

The human evidence for that claim is weak, and the doses used in what research exists are usually higher than 100 mg. Treat this one as speculative. It does no harm, but it is not a reason to buy the product.

Theophylline Anhydrous – 100 mg

Theophylline is a stimulant and bronchodilator in the same family as caffeine, used medically for asthma. In a pre workout it contributes energy and, in theory, easier breathing under load.

100 mg is a meaningful dose and theophylline has a narrower margin than caffeine does, with nausea and jitteriness showing up more readily. Stacked on top of 525 mg of total caffeine, this is a formula that deserves respect rather than curiosity.

CocoaBurn Cocoa Extract – 100 mg

A cocoa extract standardised to 50% cocoa alkaloids, which in practice means theobromine and related compounds. Theobromine is a mild, long-acting stimulant that smooths out caffeine and supports vasodilation.

100 mg at 50% gives roughly 50 mg of alkaloids, which is modest next to the 200 mg of straight theobromine that many pre workouts use. A supporting ingredient here, not a headline one.

Yohimbine HCL – 3 mg

Yohimbine is an alpha-2 adrenergic antagonist. It increases adrenaline, supports fat mobilisation and is one of the most reliably divisive ingredients in the category, with anxiety, sweating, nausea and raised blood pressure all common in people who do not tolerate it.

3 mg is a moderate dose on its own. It is not on its own here, because there is alpha yohimbine below it as well. Anyone who knows they react badly to yohimbine should skip this product rather than try to dose around it.

Alpha Yohimbine – 2 mg

Also called rauwolscine, listed here as Rauwolfia Vomitoria standardised to 90% alpha yohimbine. It is more potent than yohimbine HCl and the effects are sharper.

2 mg is a high dose, and running it alongside 3 mg of yohimbine HCl makes this one of the more aggressive stimulant profiles you will find. Even so, I would not have guessed there was more than 1 mg per serving from how it actually felt, so it is better balanced in practice than the label suggests. Start at half a scoop regardless.

Huperzine A 1% – 200 mcg

About Kyle Risley

Kyle Risley founded Lift Vault in 2016 to make finding great powerlifting programs easier. Since then, the site has grown to include hundreds of programs for strength, bodybuilding, Olympic weightlifting, and more. He currently lives in Massachusetts and continues to compete in powerlifting.