About Ad Rules Plain

These guides are for ordinary shoppers who see health claims online and want a calm way to judge them. You do not need any background in law, medicine or marketing to follow them.

They cover the main ideas behind rules for supplement advertising: what makes a claim truthful and backed up, why disease claims are off limits for supplements, what the small print called a structure-function disclaimer means, how to report a misleading ad, and how to tell advertising from editorial content.

The aim is to help readers make sense of everyday oral health topics and make their own decisions, with a dentist as the person to ask about their own mouth. The guides are independent and are not written by a clinic or a seller.

What you will find here

Ad Rules Plain publishes 5 guides about rules for supplement advertising, among them Truthful and Substantiated: The Core Advertising Rule, Why Supplements Cannot Claim to Address Disease, The Structure-Function Disclaimer in Plain English.

Not medical advice

This site is general information about oral health. It is not medical or dental advice and does not replace a dentist or doctor. Talk to your dentist or doctor before you start any supplement, especially if you are pregnant or breastfeeding, take medicines, have a medical condition or want to give anything to a child.

How we are paid

Independent guide. We may earn a commission if you buy through links on this site, at no extra cost to you. This is not medical advice. ProDentim is a dietary supplement sold by its seller. It does not diagnose, treat, cure or prevent any disease and it does not replace brushing, cleaning between your teeth or dental checkups.

How the guides are made

Guides are written by the Ad Rules Plain editors with the help of AI writing tools and are meant as general information. We do not test products. Products, prices and availability change, so check the seller's website before you decide.