Vitamin supplements

It's summertime and I have to stock up on vitamins for us and for the kids. During summer, there is a high possibility for my kids to have colds because of the extreme heat. I always make it a point to give them their daily dose of Vitamin C aside from their usual Multivitamins. On the other hand, me and my husband also make sure that we have our vitamins to keep us protected from sickness. A friend is telling me to check the hgh supplements that are available over the counter ,but I guess my kids don't need it yet. I can somehow recommend it to my cousin who is in his early teens. I am happy to find some online coupon codes for these vitamins. Small savings matters to me a lot. I can use that money for something else, like diapers.