Need an answer to a question from my daughter. Our entire family is now taking Andrew Lessman's vitamins. She is buying the HSN Today's Special for herself and my son-in-law. She want's to know if my granddaughters who are 13 and 16 can take them. I wanted to see if anyone has their teenagers using them. Our family suffers from an immune deficiency. These vitamins work for us so she wants to get her daughtersstarted on them. Didn't know if they are too potent forteenagers. Thanks for answering.