I wish I had read this post last night. I am new to this whole subject. I got a bottle of liquid kelp yesterday, just to get started on something while I do a little more research, etc. It said to give 4 drops for an adult. I gave four of my children and myself 2 drops at around 9pm, after dinner. I and two of my kids were up cleaning the house and cooking until 3am. I can't think of anything else it could be except for the kelp.