Check the scope of the claim
Is the page describing comfort, convenience or treatment of a condition? Write down the exact intended use before looking for evidence. Avoid quietly changing a modest description into a stronger claim when sharing it with someone else.
Match the study to the device
Look for the product tested, participants, comparison and outcome. A study of acupuncture is not automatically a study of a hand-worn acupressure device. An attractive diagram of a mechanism does not replace that comparison.
Keep a record for a clinical conversation
Bring the package or instructions and your list of questions to a qualified clinician. Ask about suitability for your circumstances rather than assuming a non-drug product is appropriate for everyone. No treatment instructions are provided here.