Learn About CBD
Proof is a women-owned company in Sonoma County. Our co-founder Sarah Miletich, a chemist, formulates every batch, and our co-founder Julie Mercer is a licensed California cannabis attorney. This page collects everything we have written to help you use CBD thoughtfully, grouped by the question you are trying to answer.
A few ground rules for everything here. We explain what research shows and where it is thin. We do not tell you CBD will treat or cure anything. When a question is really about your health or your medications, the right answer is a conversation with your doctor, pharmacist or veterinarian, and we say so.
Start here
What is CBD?
CBD vs THC
Full-spectrum vs Broad-spectrum
CBD dosage guide
CBD Safety
Our Lab Reports
CBD basics
What CBD is, how it interacts with the body, and what the research does and does not show.
What is CBD?
The Endocannabinoid System, Explained
CBD vs THC
Our honest take on the research gap
CBD Glossary
CBD FAQ: 320 Questions Answered
Cannabinoids and spectrum
What else is in a bottle besides CBD, and why it changes what you are buying.
How to use CBD
Taking it, timing it, storing it, and a few ways to use it in the kitchen.
How to use CBD tinctures
CBD dosage guide
How long does CBD take to work?
A morning-to-night CBD routine
Does CBD oil expire?
How to open Proof drops
Cooking with CBD tinctures
CBD mocktail recipes
Chewy CBD pumpkin cookies
Safety and medications
The part of CBD most people skip. Read this before you start, especially if you take any medication.
CBD Safety: Questions to Ask First
CBD Side Effects
CBD and Prescription Medication
Does CBD show up on a drug test?
Can you drive after taking CBD?
CBD and Alcohol
CBD Before Surgery
Quality and Lab Testing
How to tell whether a CBD product contains what it says, and nothing it should not.
Proof lab reports (COAs)
What Tested Clean means at Proof
Why product testing matters
Greenwashing in hemp
Why there is a Prop 65 warning on our products
Hemp law
Federal hemp rules change on 12 November 2026. These explainers describe the law as of the date each was published; check the date at the top of each one.
Sleep
Evening routines, what the research on CBD and CBN shows, and how people choose a formula.
Stress, calm and focus
Everyday balance: how people use CBD alongside the habits that matter most.
Topicals and recovery
Roll-ons, creams and patches: how topical CBD is used, what 1,000 mg means, and what is in ours.
Our guide to CBD topicals
Why use CBD topically?
Roll-on vs cream vs patch
What 1,000 mg means on a topical
What's inside our Ice Hot Roll-On
How a CBD roll-on fits into recovery
CBD and post-workout recovery
Topical or oral? Choosing a format
How to make CBD bath salts
Pets and animals
Our animal library covers dogs, cats, horses and small pets. Every piece starts in the same place: talk to your veterinarian.
CBD for Animals: Start Here
CBD for Dogs
CBD for Cats
CBD for Horses
CBD for Small Pets
Is CBD Safe for Pets?
Can pets have human CBD oil?
How to read a pet CBD lab report
Your pet ate THC: What to do
Who writes this
Everything here is written or reviewed by our founders. Here is how we work.
Sarah Miletich, Chemist and Co-founder
Julie Mercer, Cannabis Attorney and Co-founder
Our Editorial Policy
The Story Behind Proof
The Top 5 Questions We Get
The Proof of Wellness Podcast
These statements have not been evaluated by the Food and Drug Administration. Proof products are not intended to diagnose, treat, cure, or prevent any disease.