How Old Do You Need to Be to Take EHT Age-Defying Supplement? Joel B October 06, 2015 19:40 Updated Follow For ages 18 and under, please consult your physician before using. Related articles How Do I Know EHT is Working? How Can I Get the Best Results from EHT? Is EHT Safe? What Other Certifications Do the Manufacturers of EHT Have? EHT® Age-Defying Supplement, Mind Enhancement Formula™ Comments 0 comments Article is closed for comments.