SKU: 6450885827

Killer Labz | Stim Reaper | 30 Servings

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Description

Killer Labz | Stim Reaper | 30 ServingsSolid beta alanine dose with a stacked, branded high stim blend. Killer Labz Stim Reaper is a high stim pre workout that's all about getting you into a killer training zone. It hits hard with quick nervous system activation, lasting energy, and better push through fatigue on intense workouts. This isn't a fully open label, all around pre with pumps, electrolytes, and brain boosters all laid out. It's a bold stim heavy mix that gives you two clear

Solid beta-alanine dose with a stacked, branded high-stim blend.

Killer Labz Stim Reaper is a high-stim pre-workout that's all about getting you into a killer training zone. It hits hard with quick nervous system activation, lasting energy, and better push through fatigue on intense workouts. This isn't a fully open-label, all-around pre with pumps, electrolytes, and brain boosters all laid out. It's a bold stim-heavy mix that gives you two clear performance pieces upfront – Beta-Alanine at 3,000mg and Taurine at 1,000mg – then builds the rest with prop blends of multiple adrenaline-boosting compounds.

Beta-Alanine at 3,000mg is solid, sitting just under the usual 3,200-6,400mg range from studies. It's the key building block for carnosine in your muscles – that stuff helps buffer acid buildup during tough training. You notice it most in repeated high-intensity bursts, like 1-10 minute efforts, where it lets you keep going when the burn kicks in. This dose works well and is close to clinical, but it's a hair below the standard 3.2g mark you see in a lot of research.

Taurine at 1,000mg is at the low end of effective doses, but it's a smart add here. It helps with cell water balance, how calcium works in muscles, and nerve signaling. It makes stim formulas feel better overall, not just stronger. Studies back it for endurance and heart health, and at 1g it supports better muscle contractions, smoother energy, and keeping cells hydrated.

Key Highlights

  • 3,000mg Beta-Alanine – this is a real dose, right under the classic 3.2g mark from studies. It boosts muscle carnosine levels over time, helping buffer acid so intense sets don't get shut down by burn and buildup as quick.
  • 1,000mg Taurine – a dose that matters, which a lot of high-stim pre's skip or skimp on. It helps with cell hydration, calcium in muscles, and nerve function, making the formula feel more dialed for performance instead of just wild stim chaos.
  • Two kinds of caffeine – Stim Reaper goes with both Caffeine Anhydrous and Infinergy® instead of one type. That counts because anhydrous hits fast, while di-caffeine malate gives a slower release for longer-lasting energy.
  • Infinergy® in the mix – this branded di-caffeine malate from Creative Compounds is a top pick for extended caffeine delivery in supps. The malate part slows it down compared to regular anhydrous, so your energy sticks around longer.
  • Juglans Regia Extract at 150mg – this is what makes the high-stim vibe stand out. It amps up that urgent, sympathetic drive during workouts, not just fluff on the label.
  • Synephrine HCL and Halostachine HCL – these aren't throw-ins. They crank the formula into adrenaline territory, making it feel more heat-building and intense than basic caffeine-only pre's.
  • Cocoabuterol® – a cool branded cocoa extract that brings more than plain stim punch. Its cocoa alkaloids and polyphenols help with mood, blood flow, and a smoother brain boost than piling on more caffeine.
  • Rauwolfia vomitoria standardized to 90% rauwolscine – this screams 'for pros only.' Rauwolscine sharpens the stim feel, making it hotter and more intense overall.

Who Is This For?

  • Pre-workout vets with caffeine tolerance who want an aggressive hit from the start. Mix of hidden caffeine, synephrine-style stims, rauwolscine, and solid beta-alanine fits folks who handle high-stims well.
  • Bodybuilders in tough growth phases needing focus and drive deep into sessions. 3,000mg Beta-Alanine helps repeated sets, 1,000mg Taurine aids muscle and hydration, stim stack keeps output up when fatigue hits.
  • Early morning trainers needing quick switch from sleepy to ready. Anhydrous gives fast kick, Infinergy® stretches it so no early peak and mid-crash.
  • Intermediate-advanced gym rats cutting fat who like a pre with thermogenic bite. Synephrine HCL, rauwolscine Rauwolfia, and Cocoabuterol® make it feel hotter, sharper, more hunger-curbing than basic ones.
  • Athletes who mentally tap out before body does in long strength or growth workouts. Huperzia serrata for Huperzine-A and stim setup target alertness and lock-in from warm-up to finish.
  • High-volume leg day folks wanting push through burn and breathing strain on compound sets. Beta-alanine's carnosine boost shines here, where acid buildup limits you most.

How to Use

Mix 1 scoop in 8-12 oz cold water 20-30 minutes pre-train. If high-stims are new, half-scoop first to test – total stims aren't all shown, including multiple adrenaline types beyond caffeine. Shaker's best for mixing; stirring works but shakes even it out better. Empty stomach speeds and amps the hit; after big meals slows and softens it. Don't mix with extra caffeine, fat burners, yohimbine/rauwolscine, or strong brain stims unless tolerance is locked in. Stacks good with non-stim basics like creatine, hydration mixes, or pump stuff to fill gaps. Tolerance builds, so vets often save it for hard days, not every session. Keep it sealed cool and dry – moisture makes these powders clump.

What to Expect

First 0-10 minutes: Beta-alanine not yet, but empty stomach might bring early stim waves and mental clarity. 10-20 minutes: Anhydrous caffeine kicks in, plus that beta-alanine tingle in face, ears, or hands for many. 20-40 minutes: Peak time – stim matrix with caffeine, synephrine-style hits, and adrenaline stuff builds max urgency and aggression. 40-90 minutes: Energy holds as Infinergy® carries it longer than single caffeine, but how long depends on your tolerance and food. Days 1-7: Mostly the stim buzz – beta-alanine's building but not maxed. Weeks 2-4: Regular use ramps beta-alanine, making high-intensity endurance feel solid as carnosine builds. It's not a total game-changer, but you notice better push when things get acidic.

Key Ingredients

  • Beta-Alanine — Buffers the burn for more high-intensity output
  • Taurine — Supports hydration, muscle function, and smoother energy
  • Caffeine Anhydrous — Undisclosed — Fast-onset energy for immediate training readiness
  • Juglans Regia Extract — Adds harder-edged sympathetic stimulant intensity
  • Infinergy® — Undisclosed — Extends the energy curve beyond plain caffeine
  • Halostachine HCL — Undisclosed — Sharpens the formula’s adrenergic training feel
  • Synephrine HCL — Undisclosed — Thermogenic adrenergic support for aggressive sessions
  • Cocoabuterol® — Undisclosed — Cocoa alkaloids for mood, blood flow, and edge
  • Rauwolfia Vomitoria Extract — Undisclosed — Intensifies thermogenic drive for advanced users
  • Huperzia Serrata Extract — Undisclosed — Supports focus through acetylcholine preservation

Frequently Asked Questions

How much caffeine is in Killer Labz Stim Reaper?

The exact total caffeine is not fully disclosed from the verified label data available. We know the formula contains both Caffeine Anhydrous and Infinergy® di-caffeine malate, but the individual amounts are hidden inside a proprietary blend, so this should be treated as a high-stim product with unknown total caffeine.

Is Stim Reaper a beginner-friendly pre-workout?

No. This formula is better suited to experienced users because it combines undisclosed caffeine sources with additional stimulant and adrenergic ingredients including Synephrine HCL, Halostachine HCL, Rauwolfia standardized to 90% rauwolscine, and Juglans Regia extract.

Why is there 3,000mg of beta-alanine in Stim Reaper?

Beta-Alanine is included to support muscular endurance during high-intensity training by increasing muscle carnosine over time. The 3,000mg dose is just under the standard 3,200mg clinical benchmark, so it is a meaningful amount even if it falls slightly short of the classic studied target.

What does the 1,000mg taurine do in this formula?

Taurine supports osmoregulation, calcium handling in muscle, and neuromuscular function. In practical terms, it helps support muscle performance and can make a high-stim pre-workout feel more stable and performance-oriented rather than purely jitter-driven.

What is Infinergy® and why is it used here?

Infinergy® is a trademarked di-caffeine malate ingredient that combines caffeine with malic acid in a form designed for slower absorption than plain caffeine anhydrous. In Stim Reaper, it helps create a more sustained energy curve instead of relying entirely on a short, sharp caffeine spike.

Will Stim Reaper make me feel tingles?

Probably, yes. The 3,000mg Beta-Alanine dose is high enough that many users will feel paresthesia, the harmless tingling or prickling sensation often noticed in the face, ears, or hands within 10-20 minutes of use.

Can I stack Stim Reaper with a pump product?

Yes, that is actually one of the smartest ways to use it if you want a more complete pre-workout setup. Because Stim Reaper is built around stimulation and endurance support rather than a full nitric oxide pump profile, a stim-free pump product can complement it well.

Should I take Stim Reaper every day?

It can be used regularly, especially because beta-alanine benefits from consistent intake, but many users will prefer to reserve it for hard training days. The reason is stimulant tolerance: repeated daily exposure to aggressive stimulant formulas often reduces the noticeable energy and focus effect over time.

How long before training should I take it?

Take it about 20-30 minutes before training. That timing allows the fast-acting caffeine anhydrous to begin taking effect while giving the rest of the stimulant matrix time to build into the session.

How does this compare with typical retail pre-workouts?

Stim Reaper is more aggressive than mainstream retail formulas because it includes multiple stimulant axes beyond caffeine alone, including rauwolscine-standardized Rauwolfia and Synephrine HCL. It is not as transparent as premium fully disclosed labels, but it is clearly designed for a stronger subjective hit.

Shipping Notes
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SKU: 6450885827

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4.2 ★★★★★
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Trekkintheplains
Port Orchard, US
★★★★★ 5
Cute, functional, works great!
I LOVE this thing!! It froths the half and half for my coffee and cream for my tea so beautifully. It's fast, and easy to use and clean. Really adds to my morning routine to be able to choose a temperature and froth level to my coffee creamer. The color is so pretty and both it and the style fit right in with my kitchen decor. I've been using it for several months and haven't had any issues to far. Great item! I was afraid it would just be more clutter and gadgets I didn't need taking up counter space, but it fits right in next to my coffee maker, and I truly do use it every morning. It makes my coffee even more enjoyable, believe it or not. Love it!!
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Reviewed in the United States on April 10, 2026
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Melissa Tucker
Bozeman, US
★★★★★ 4
Solid purchase
Color: White, Color: White
I have used it often, basically daily. I love how it has a magnet stirrer and therefore is quiet. I like the stainless steel aspect. It does heat up well. It can store two regular mugs of beverage or maybe 3-4 mugs of froth. It is lightweight but doesn’t feel cheaply made- good enough quality. The froth is great- I have no complaints. I had to learn the hard way that non-homogenized milk gets grainy- weird and icky. I wish it was a little more frothy on the matcha side of things but I still use it. Also, I wish for things like hot chocolate that it got hotter. It goes to 160 on the machine but it doesn’t feel that hot when you drink it. I haven’t measured the temperature of the drink yet but it isn’t hot hot.
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Reviewed in the United States on January 2, 2026
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Verified Purchase
Metsa Lintu
Lexington, US
★★★★★ 5
It delivered on more levels than I imagined or expected
Color: White
EDIT: I've used this frother pretty much daily, sometimes more than daily, since ordering it, and it has performed very well. I make turmeric/ginger/pepper milk most nights. The way this frother performs for that use astounded me. I bought it for coffee/cocoa/mushroom drinks, then while waiting for it to arrive realized it might work with the "golden milk." First, the little frother uses a closely/precisely applied heat drawing 550w. The thick steel pot nestles down into the heating base, and the cover fits nice and snugly. So I'm not heating an entire thick saucepan perched atop an entire stove burner (1,000-1,500 w), with all the escaped heat that involves. Second, I'm not standing there with thermometer in hand, diving into the open pan of heating milk to find that perfect sweet spot around 150-155...while constantly stirring and making sure not to let it boil over. Because, third, the little frother takes care of that part, with the thermostat auto shut off. Fourth, it whisks the powders smoothly in. Manufacturer suggests starting the whisk movement in the milk, then adding the powders. They did collect a bit in the low vortex around the stem of the little assembly that holds the various whisk/stir/froth blades, but I just stuck a spoon handle in there carefully, and it redistributed easily around the magnetic-driven stirring assembly. And finally, omigosh, the lovely velvety texture! Since these spices express best with extended warming, I'm making one batch, heated and frothed to 160F, then follow that with just milk frothed to 140. While the second batch is running (there's a cool down pause in the process, hastened by rinsing the pot exterior in cold water and of course drying it before putting it on the base), the first batch is steeping the spices...so the combined result is perfect. EDIT: It did its job much faster than I expected (minutes). So I tested it as promised on my "solar generator" backup unit. My thought was that this would make my usual most efficient option for heating milk in those conditions the second most efficient: open saucepan atop a multi-watt-level portable induction cookplace on the 600w setting. And with much less cleanup at a time when water is scarce (electric well pump). We had a power outage here last week. Yep, the 550w frother ran on a Jackery 2000 for the few minutes it took to heat/froth milk--no trouble whatever and hardly put a dent in the charge. WOW. (Technically speaking it could run continuously, continuously heating, for over 3 1/2 hours on a full 2000 kWh charge.) EDIT: This isn't a reduction in stars, just an observation. The frother "tree" assembly that does the business of stirring/whisking/frothing--I thought to order a spare in the event of damage to the original. They are very hard to find online. Maestri House lists the replacement part as "out of stock." Also out of stock, replacement pot and lid. This might be a concern to some considering the tool. But it seems to be well made and I hope gives long service. EDIT: As of May 2026 the little frother is still working exceptionally well on a nearly daily basis. I purchased it in October of 2025, so that shouldn't be a surprise...but just sayin'. :^>
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Reviewed in the United States on October 27, 2025
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Guy Tingos
West Palm Beach, US
★★★★★ 5
This is the one to get
Color: Black
I find having separate controls for temperature and foam density is critical and this model nails it. The "newer model" listed in the product description eliminates the separate controls and does not function as well. This frother also has nice features such as the ability to produce cold foam and easy cleaning. It is also extremely quiet. I've tried several mid-range electric frothers and this is the best.
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Reviewed in the United States on May 11, 2026
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Verified Purchase
Mizz Road Runner
Birmingham, US
★★★★★ 5
So far. so good.
Color: White
This is my 3rd frother that I purchased from Amazon. The others were brand name frothers that broken within a few months of use. I won't name here (hint: begins with an N and ends with an o) This Milk frother from Maestri however works excellent. Multiple heat and drink settings and makes the perfect foam every time. I especially like how the pitcher is removable from the electric base and can be washed with out worry. easy to use. Just read the manual to understand all the settings, makes a perfect froth in less than 2 minutes. I've only had this for a few weeks but I am impressed.
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Reviewed in the United States on February 11, 2026

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