Supplement research in plain English
We read the label, the research and the fine print before you buy.
Plain-English explanations of what a supplement contains, what the evidence does and doesn't show, and what it really costs.
What we check before you buy
1. The label
What’s really in the bottle, and how much of each ingredient. Many products hide amounts inside a “proprietary blend”.
2. The research
What published studies show for each ingredient, how strong that evidence is, and whether the product itself has ever been studied.
3. The fine print
The real cost per day, how the money-back guarantee works, and what customers say about refunds.
Latest guides
Everyday dental care
How to Take Care of Your Teeth: A Simple Daily Routine
Brushing, cleaning between your teeth, fluoride, food and dental visits: the routine the ADA, CDC and NIH recommend, in plain steps. Read the guide
Gum health
Gum Disease: Early Signs, Risk Factors and When to See a Dentist
Bleeding or swollen gums are easy to ignore. The early signs, the difference between gingivitis and periodontitis, and when to get them checked. Read the guide
Everyday dental care
How to Clean Between Your Teeth: Floss, Picks and Water Flossers
Floss, picks, tiny brushes or a water flosser: how to clean between your teeth step by step, and which tools help if flossing is hard for you. Read the guide
What we don’t do
We have not tested any of these products ourselves. Our reviews are based on published research, the product label and the seller’s own terms, and we say so on every review. We don’t use star ratings or customer testimonials, and nothing here is medical advice.
We earn a commission if you buy through links on our reviews, at no extra cost to you. Read how we make money.
Free: 5 questions to ask before you buy any dental supplement
A one-page checklist to help you judge any dental supplement before you spend money on it. It appears on the next page as soon as you sign up.