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Smart Brothers NZT King

Smart Brothers 20 caps

£49.92Tax includedLowest price in 30 days: £49.92

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Smart Brothers NZT KING 20 caps is an advanced formula that combines high-potency nootropic compounds with natural adaptogens. It is intended for experienced users seeking a strong, focused effect from a single-capsule serving. The formula blends well-known cognitive and energy-support ingredients with modern compounds used in advanced pre-workout and productivity supplements.

CTL Opinion


NZT KING is one of the most complex one-capsule formulas in the Smart Brothers range. The combination of RL-40,940, DMHA, and sustained-release caffeine delivers a distinct, fast-acting profile. It stands out for its compact serving size and the synergy between cognitive and physical components. We consider it suitable for advanced users who are already familiar with potent nootropic or stim-based products.

Smart Brothers NZT King – Supplement Facts


Serving size: 1 capsule
Servings per container: 20

Per serving:



  • CRL-40,940– 200 mg

  • VitaShure® Caffeine SR – 150 mg

  • Alpha GPC – 100 mg

  • Theacrine – 100 mg

  • Rhodiola Rosea – 100 mg

  • 2-Aminoisoheptane (DMHA) – 75 mg

  • N-Acetyl L-Tyrosine – 75 mg

  • Acetyl L-Carnitine – 60 mg

  • Grape Seed Extract (95%) – 10 mg

  • Naringenin – 5 mg

  • Jalapino – 5 mg

  • Piperine (95%) – 5 mg


Other Ingredients


Gelatin (capsule shell), Magnesium Stearate, Silicon Dioxide.

Suggested Use


Take one capsule with water.
Use occasionally or as part of a rotation with other stimulant-based products.
Do not exceed the recommended serving.

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Smart Brothers NZT King is an advanced one-capsule formula combining high-potency nootropic compounds with natural adaptogens, intended for experienced users seeking a strong, focused effect from a single-capsule serving.

Each container holds 20 capsules, with a serving size of 1 capsule.

Per serving, NZT King contains CRL-40,940 (200mg), Caffeine SR (150mg), Alpha GPC (100mg), Theacrine (100mg), Rhodiola Rosea (100mg), 2-Aminoisoheptane (DMHA) (75mg), N-Acetyl L-Tyrosine (75mg), and Acetyl L-Carnitine (60mg).

Yes, it includes Grape Seed Extract (95%), Naringenin, Jalapino, and Piperine (95%) in smaller amounts as part of the formula.

The capsules also contain Gelatin (capsule shell), Magnesium Stearate, and Silicon Dioxide.

The suggested use is to take one capsule with water.

It is suggested for occasional use, or as part of a rotation with other stimulant-based products.

NZT King is designed for advanced, experienced users who are already familiar with potent nootropic or stimulant-based products.

The combination of CRL-40,940, DMHA, and sustained-release caffeine delivers a distinct, fast-acting profile, standing out for its compact serving size and the synergy between its cognitive and physical components.

NZT King combines cognitive and energy-support ingredients with modern compounds used in advanced pre-workout and productivity supplements, aiming to deliver a strong, focused effect from a single capsule.

Smart Brothers

Smart Brothers

Smart Brothers is a fast-growing supplement brand focused on:

  • high-quality,
  • effective formulas for performance,
  • recovery,
  • cognitive support.

Cross The Limits is the official exclusive distributor of Smart Brothers in the UK, guaranteeing authentic products, trusted sourcing and reliable availability.