Cant use.
Didn't notice a difference in me.  Could be because they got too hot in the mailbox.  Package says not to exceed 75 degrees for more that so many  hours.  I live in Southern AZ.  In my mailbox. Probably was over 150 degrees that day for more than eight hours.  Wrote to seller asking if they could use cold packs.  They responded the vitamins should be okay.  It's a shame.  They were exactly what I was looking  for.  Liquid, absorbable and not alot of sugar.  I didn't buy anymore.
Rating: 1 stars