8g Citrulline Plus a Punchy High-Stim DMHA Mix
Dark Labs Crack Purple isn't for beginners or casual use. It's a high-stim pre that balances pump ingredients with serious energy boosters. The goal? Give you enough blood flow to feel full and strong, then crank up the stims for that hard-hitting drive. You can see it on the label: solid pumps, but the real star is the intense stim side.
At two scoops, L-citrulline hits 8,000mg. That's a top dose. Citrulline boosts arginine levels better than taking arginine straight, which helps with nitric oxide— that's what widens blood vessels for better flow and that pumped-up feel during sets. Studies show 3-8g works, and 6-8g is ideal for performance. Bottom line: this dose delivers.
Beta-alanine is at 3,000mg per two scoops. It's close to the usual 3.2g from research, so it's solid. Beta-alanine builds carnosine in muscles over time, which fights acid buildup during tough reps. The tingles are just a side effect; the real win is pushing harder without burning out fast.
Agmatine sulfate at 1,000mg helps the pump even more. It's popular in pres for boosting nitric oxide and brain effects, and 1g is a good amount based on what users feel. Choline bitartrate at 500mg provides building blocks for acetylcholine—a brain chemical that aids focus and that mind-muscle link. It's not the fanciest choline, but it helps with the mental side in a formula all about intensity.
The stimu
Dark Labs Crack Purple by Dark Labs contains 4000mg L-Citrulline, a clinical dose for training performance and pump.
Key Highlights
- 8,000mg L-Citrulline per 2 scoops — that's a real heavy-hitter dose for nitric oxide support. It turns into arginine efficiently, opening up blood vessels for better flow and that full pump you miss with weak 3-4g versions.
- 3,000mg Beta-Alanine per 2 scoops — right under the standard 3.2g from studies, but still enough to make a difference daily. Stick with it, and it boosts muscle carnosine to fight off that deep burn, keeping your reps strong.
- 1,000mg Agmatine Sulfate — a solid add-on for pump chasers wanting more than just citrulline. It teams up for nitric oxide and gives that dense, full feel that stim-heavy pres sometimes skip.
- 500mg Choline Bitartrate — there to help with focus and connecting your brain to your lifts. Not the top-tier choline, but it brings decent nootropic support to keep you dialed in mentally.
- 250mg Total Caffeine — gives a solid energy foundation without overdoing it. Split between anhydrous and citrate for a quick kick-in you can feel right away.
- 240mg 2-Aminoisoheptane (DMHA) per 2 scoops — this is why it hits harder than the caffeine suggests. DMHA amps up drive, sharpens focus, and gets you in that aggressive training mode.
- 300mg N-Phenethyldimethylamine Citrate — adds that mood-lifting energy boost for a fun, urgent vibe. It's what makes this pre about the experience, not just pumps and basic caffeine.
- 50mg Halostachine — a cool stim that pairs with caffeine to crank up the intensity. Data's limited, but it's here to make the energy feel more aggressive overall.
Dark Labs Crack Purple by Dark Labs contains 4000mg L-Citrulline, a clinical dose for training performance and pump.
Who Is This For?
- Tough stim users who find regular pres weak. Two scoops mix 8g citrulline with DMHA, N-phenethyldimethylamine citrate, caffeine, halostachine, and alpha yohimbine for a killer workout vibe.
- Bodybuilders cutting hard, needing mental push when energy dips. Stims build intensity, citrulline and agmatine keep pumps going despite low cals.
- Folks training post-work who need to shake off fatigue. Caffeine plus DMHA setup switches you to beast mode faster than mild options.
- Guys who love the feel of high-stims. It's about that focus, urgency, warmth—not just perfect science.
- High-volume lifters wanting pumps in a stim bomb. 8g L-citrulline and 3g beta-alanine add real support over just exotic energy.
- Pre collectors who get tolerance and dosing. It pays off if you test and use smart—one or two scoops.
How to Use
Start with one scoop to test, even if you're used to pres—DMHA and alpha yohimbine change things. If it feels good, go to two for the real deal. Take 20-30 minutes before, giving caffeine and stims time while citrulline sets up. Mix one in 10-16oz water, two in 16-24oz; shake well for best mix. Empty stomach hits harder; light meal smooths if sensitive. No other caffeine or yohimbine that day unless you know your limits. Pairs great with creatine, electrolytes, intra carbs. Cycle it to avoid tolerance buildup. Keep it cool, dry, lid tight for freshness.
What to Expect
0-10 minutes: mental shift hits first, especially empty stomach. 10-20: caffeine ramps, tingles might start, alpha yohimbine warmth in some. 20-40: full on—energy up, focus tight, citrulline pumps as you lift. 40-90: stims hold strong, varies by tolerance and dose. Days 1-7: instant energy, focus, pump; beta-alanine loading. Weeks 2-4: carnosine builds, so you handle hard efforts better. Stims stay fresh; endurance grows.
Key Ingredients
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L-Citrulline — 8000mg — Clinical-dose nitric oxide support for fuller, harder pumps
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Beta-Alanine — 3000mg — Helps delay the burn during repeated hard sets
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Agmatine Sulfate — 1000mg — Adds denser pump support beyond citrulline alone
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Choline Bitartrate — 500mg — Supports focus and mind-muscle connection under stimulants
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Caffeine Anhydrous — 200mg — Fast-acting energy foundation for immediate workout readiness
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N-Phenethyldimethylamine Citrate — 300mg — Mood-driven urgency for a more aggressive training feel
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2-Aminoisoheptane (DMHA) — 240mg — Hard-hitting central stimulation beyond standard caffeine formulas
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Caffeine Citrate — 100mg — Sharpens the early onset of the stimulant curve
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Halostachine — 50mg — Adds adrenergic intensity to the high-stim experience
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Alpha Yohimbine — 2mg — Potent thermogenic edge for advanced stimulant users
Dark Labs Crack Purple by Dark Labs contains 4000mg L-Citrulline, a clinical dose for training performance and pump.
Frequently Asked Questions
How much caffeine is in Dark Labs Crack Purple?
At the full 2-scoop serving, Crack Purple provides 200mg caffeine anhydrous plus 100mg caffeine citrate, which yields 250mg total active caffeine. That number matters, but it does not tell the whole story—the formula also contains DMHA, N-phenethyldimethylamine citrate, halostachine, and alpha yohimbine, which make it feel much stronger than a basic 250mg caffeine pre-workout.
Is 1 scoop enough, or do I need 2 scoops?
1 scoop is the right place to start for nearly everyone, even experienced users, because the stimulant blend is aggressive. 2 scoops delivers the full intended formula, including 8g citrulline, 3g beta-alanine, 1g agmatine, 240mg DMHA, and 2mg alpha yohimbine.
What kind of pump should I expect from Crack Purple?
For a high-stim product, the pump support is legitimately strong. At 2 scoops you get 8,000mg L-citrulline plus 1,000mg agmatine sulfate, which is enough to support noticeable vasodilation, fuller muscles, and better workout blood flow than most exotic-stim formulas.
Is Crack Purple a good daily pre-workout?
It can be used regularly by advanced users, especially because beta-alanine benefits from consistent intake, but it is not the most practical everyday pre for most people. The stimulant profile is intense enough that many users reserve it for demanding training days or cycle it to manage tolerance.
Will Crack Purple make me tingle?
Possibly, yes. The full serving contains 3,000mg beta-alanine, which is enough for many users to notice paresthesia—the harmless tingling or prickly sensation often felt in the face, ears, or hands shortly after dosing.
What makes Crack Purple feel stronger than the caffeine total suggests?
The answer is the non-caffeine stimulant stack. DMHA at 240mg per full serving, N-phenethyldimethylamine citrate at 300mg, halostachine at 50mg, and alpha yohimbine at 2mg all contribute to the heightened intensity, sharper focus, and more aggressive feel.
Can I stack Crack Purple with a fat burner or energy drink?
That is generally a bad idea. Because this formula already combines caffeine with DMHA and alpha yohimbine, adding more stimulants can push the experience from productive to uncomfortable very quickly.
How long before training should I take it?
Take it about 20-30 minutes pre-workout. That timing gives the caffeine and stimulant blend time to become noticeable while allowing citrulline to start supporting blood flow as your session ramps up.
Is Crack Purple beginner-friendly?
No. Even at 1 scoop, this is still a high-stim pre-workout, and at 2 scoops it is clearly built for experienced users with established stimulant tolerance.
Does Crack Purple have a proprietary blend?
No. The formula is fully disclosed, which is a major advantage in the high-stim category because you can see every active ingredient and every dose before using it.
