Love this stuff! I always choose this one over the one without Vitamin D and Zinc. I take it for illness prevention but it is also helpful to take when you’re starting to not feel well or are already sick. I look forward to drinking it! However, I can’t give it a full 5 stars because this pack isn’t dissolving as easily as packs I have bought in the past.

Good product that I use often. Price was just ok. Did not ship out until I contacted customer service after it was supposed to have already arrived. Did one item I wanted, to see if Sam's Club online order to delivery worked well. It did not. Would be anxious to have to keep on Sam's Club to actually pack & deliver my order.

Being a teacher, I am frequently around sick kids and parents. This truly works!

Prefer this type over others

Need this!! Great deal for the price!

The best for preventing colds and building immunity

We love it

The package are hard

Love this stuff. Prevents me from getting sick all year long. My husband has been using it for over 2 years and has gotten sick once. I was previously using Elderberry and it did not work as well.

Great absorption and very effective in boosting my immune system. Noticeable difference in colds, flu and other disease reactions over years of use. Highly recommend.