10,000+ 5-star verified reviews

Boost Focus, Energy & Mood

High-performance supplements to unlock your brain's full potential.

Your brain on Zestox

Consistent long-term nootropic use fosters healthy neuron growth, improving overall brain health and function. In a recent 60-day study:

  • 93% noticed an improvement in their cognitive function†
  • 95% felt more productive at work†
  • 95% made progress towards their goals†

A new standard in nootropics

Evidence-based formulation

We formulate our products using clinical research and our own proprietary data set––the largest data set of nootropics––to maximize efficacy. 

Third-party testing

We rigorously test every batch of ingredients for purity and potency to ensure our products are safe and effective.

Premium ingredients

We source only the highest quality extracts (like AlphaGrain® Alpha-GPC or Shoden® Ashwagandha), ensuring you get the clinically studied compounds that make the supplement work.

Over 500,000 sharper minds

  • A breath of fresh air. I feel consistently focused.

    I’ve moved completely away from my stimulant as it caused consistent mood swings and made me quite scattered at the end of the day. Taking Clarity has been a breath of fresh air. I feel consistently focused (no highs and lows) but not impulsive.
    – ALEXANDRIA A.

  • Thesis helped me pass my CPA exam without an ounce of stress.

    I used Thesis to help me focus and retain vast amounts of complex information for my CPA exams, and I used the Confidence blend the day before and the day of my exams to help me feel comfortable and ease my test anxiety. Thesis nootropics are like my secret weapon.

    – DANIEL C.

  • Thesis helped me feel focused and clear-headed for the first time.

    Motivation and Energy give me the drive I need to overcome my executive dysfunction, it's like my brain is finally... quiet. I am telling all of my neurodivergent friends about these supplements. It's exciting to find something that actually does what it claims.

    – Danielle N.