Every CLEAR order gets Sleep Strips free →

Fuel for
deep work.

200mg caffeine + 100mg L-theanine. Zero sugar. No proprietary blend.

200mg green tea caffeine ✦100mg L-theanine ✦300mg Alpha GPC ✦0g sugar ✦20 full servings · up to 40 lighter servings ✦200mg green tea caffeine ✦100mg L-theanine ✦300mg Alpha GPC ✦0g sugar ✦20 full servings · up to 40 lighter servings ✦

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Shop Cortex Clear

Cortex Clear

Focus + brain energy powder

$32.99

20 full servings per tub · 2 scoops per serving · 150g · sugar free

Choose your dose: 1 scoop for 100mg caffeine and up to 40 lighter servings, or 2 scoops for the full 200mg serving.

Add Sleep Strips to your cart and use code CLEARFREESLEEP at checkout.The code discounts one tin with any CLEAR order.

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⚡ Fast checkout · Free U.S. shipping

200mgCaffeine from green tea

100mgL-theanine

300mgAlpha GPC

0gSugar

See formula details and testing →

Cortex Clear Vibe Coder on a desk during a deep work session

What is CLEAR?

Focus you can drink.

CORTEX CLEAR is a zero-sugar drink mix built for long sessions. Each serving has 200mg caffeine from green tea, 100mg L-theanine, 300mg Alpha GPC, and a full B-vitamin stack. Use two scoops for a full serving or one scoop for a lighter dose.

200mg
Natural caffeineFrom green tea, paired with 100mg L-theanine.
300mg
Alpha GPCListed alongside inositol and ginseng on the fully disclosed label.
0g
Sugar10 calories per serving. Every ingredient fully disclosed.

The Workday Stack with CORTEX CLEAR Vibe Coder, CORTEX Creatine, and RESET

Save $5.89

Bundle and save · The Workday Stack

Your whole day, handled.

CLEAR for the work in front of you. Plain creatine as a simple daily habit. RESET for after hours. Three products built to work together from the first task to lights out.