USP Labs | Jack3d | 45 Servings

USP Labs | Jack3d | 45 ServingsClassic high stim energy that hits hard for your workouts Jack3d from USP Labs is a high stim pre workout with a proprietary blend, focusing on big energy, adrenaline rush, and workout intensity instead of fancy pump ingredients with full disclosure. The idea is simple: pack in solid caffeine, mix it with other stims and adrenaline boosters, then add classics like beta alanine, creatine monohydrate, and arginine alpha ketoglutarate all in one blend.

Classic high-stim energy that hits hard for your workouts

Jack3d from USP Labs is a high-stim pre-workout with a proprietary blend, focusing on big energy, adrenaline rush, and workout intensity instead of fancy pump ingredients with full disclosure. The idea is simple: pack in solid caffeine, mix it with other stims and adrenaline boosters, then add classics like beta-alanine, creatine monohydrate, and arginine alpha-ketoglutarate all in one blend. It feels powerful during your session, but the hidden doses mean you can't be sure if those support ingredients are at levels that really work.

We know the caffeine dose: 135mg per scoop, up to 405mg at 3 scoops. That's a lot, and it hits hard. Caffeine blocks adenosine receptors—that's the stuff that makes you feel tired—so you get more alertness, better performance, quicker reactions, and more motivation. In weight training, it's one of the best-backed ingredients for boosting your output. At 405mg, you'll feel a real surge in drive and intensity if you're used to it.

There's also 2-aminoisoheptane HCl to boost energy and mood on top of caffeine. Not as much research as caffeine, but people say it gives a euphoric, focused vibe for high-output workouts. Geranium extract is in there too—it's got that old-school stim rep, though we don't know the exact active levels. Yohimbe extract, standardized for yohimbine alkaloids, ramps up the adrenaline by blocking alpha-2 receptors, whic

USP Labs Jack3d by USP Labs contains 25mg Geranium Extract, a effective dose for training performance and pump.

Key Highlights

• Up to 405mg caffeine at 3 scoops—that's a big dose for any pre-workout these days. Caffeine is super well-researched for boosting alertness, making efforts feel easier, and pushing your training harder when you dose it right.
• Not just caffeine—it's got 2-aminoisoheptane HCl, geranium extract, and yohimbe to make the energy feel more intense and urgent. You get that aggressive training vibe that's perfect if you want to feel it working right away.
• Yohimbe extract with yohimbine alkaloids—that means they're focusing on the active parts, not just random bark. It gives a sharper, more powerful feel than your average pre-workout.
• Schisandra chinensis extract brings in some adaptogen action. Instead of piling on more caffeine, this helps with stress resistance and focus, so the stims feel more dialed in.
• Creatine monohydrate is in the mix—the top choice for strength and power if dosed well. But since it's in a blend, we don't know if you're getting the 3-5g a day that really works.
• Beta-alanine is included, great for high-intensity sets or tough metabolic workouts. It needs 3.2g+ daily to build up carnosine levels, but the hidden dose means we can't confirm if it's enough.
• Arginine alpha-ketoglutarate is first in the blend, showing that old-school pump and performance style. It was huge in early pre-workouts, though citrulline is better now for nitric oxide and raising arginine in your blood.
• Dose it from 1 to 3 scoops to match your tolerance. That's key in a high-stim product—one person's sweet spot could be too much for someone else.

USP Labs Jack3d by USP Labs contains 25mg Geranium Extract, a effective dose for training performance and pump.

Who Is This For?

• Guys used to stims who know high-caffeine pre-workouts and want one that hits strong right away. The mix of caffeine, 2-aminoisoheptane HCl, yohimbe, and geranium is for aggressive sessions, not everyday mild stuff.
• Bodybuilders or physique guys doing intense hypertrophy workouts who need better drive and less mental drag. It's great when energy and aggression beat out perfect pump doses.
• Folks training after long days when you're mentally wiped. The caffeine and adrenaline boosters cut through that and get you switched on.
• Fans of classic pre-workouts who like that aggressive feel over modern balanced ones. It's about the gym buzz, not full labels.
• People on cuts wanting energy plus less appetite and more drive with low calories. The stim profile fits that well.
• Intermediate or advanced lifters who get dosing and want to scale from 1 scoop up. Flexibility is key with strong stims.

How to Use

Start with 1 scoop in 8-12 oz cold water 20-30 minutes pre-workout. Don't jump to 2 or 3 unless high-stims are your thing—this mixes caffeine with other stuff that can make it intense. Use a shaker for even mixing, especially if changing scoops; more water can mellow it out. Take it on a light stomach—fasted if stims sit well, or after a small meal an hour or two before—for best kick-in. Skip stacking with extra caffeine, stim supps, or yohimbe. For solid performance, add your own creatine daily instead of counting on the blend. Cycle it for tough days or take breaks to avoid tolerance buildup. Store it sealed in a cool spot to prevent clumping.

What to Expect

First 0-10 minutes: Mix and drink it—nothing big yet, just getting it down. 10-20 minutes: Caffeine kicks in, you might feel more alert, warm, or tingly from beta-alanine if it's enough. 20-40 minutes: Prime time to start—focus sharpens, motivation rises, and the full stim mix shines. 40-90 minutes: It keeps you going through sets, depending on your dose and tolerance. First week: You'll judge it on the energy rush since hidden doses mean no quick buildup. 2-4 weeks: Regular use might build benefits from beta-alanine and creatine if you're getting enough, but the stim feel is the star every time.

Key Ingredients

• Geranium Extract — 25mg — Old-school stimulant identity with legacy hardcore positioning

USP Labs Jack3d by USP Labs contains 25mg Geranium Extract, a effective dose for training performance and pump.

Frequently Asked Questions