About Clearhead Lab
Evidence on brain fog, focus, and cognitive energy.
Nadia Brooks · Cognitive Health Editor
Nadia Brooks is Clearhead Lab's cognitive health editor. She writes about brain fog, focus, and cognitive energy. Every claim is tied to primary research.
Our provider reviews examine published offers, billing terms and primary sources. They do not represent personal treatment experiences. Clinical guides explain the evidence and its limits; they are educational resources for a conversation with your clinician.
How this site works
We publish 94 guides on brain fog, focus and cognitive energy, and every efficacy claim in them is tied back to a peer-reviewed study or to official FDA labeling rather than to a product page — the sourcing and corrections rules we hold ourselves to are written out in full in our editorial policy. Some of the providers we rank pay us a commission, and those partners are listed first on the provider rankings — placement is where that shows up, and nowhere else; exactly what it does and does not touch is set out in our affiliate disclosure.
What none of this adds up to is care for your particular body. Everything here is educational reading meant to make a conversation with a clinician better informed, and the limits of that — including why a result from a trial is not a prediction about you — are spelled out in the medical disclaimer.
Contact
Questions, corrections, or a source we should have cited? Write to us at mail@clearheadlab.com. We read every note and fix what we get wrong.