If you've got a cold coming on, take zinc. I doesn't prevent the cold, but will greatly shorten it. I've taken several over the years. One of my favorites is a joint formula called "Active Mobility." I've known people who have had knee problems, back problems, etc., for years, and Active Mobility has helped tremendously. I take it to keep away pain in my neck. I was diagnosed with arthritis a year ago, and this has helped me quite a bit. Active Mobility isn't widely available. It is made by a small company in Washington state. It can be found online at Healthyway.com. Another supplement I really like is called Advanced Wellness. It was originally designed for general wellness, immune system, etc. I started taking it a few months ago, and have noticed a significant drop in my blood pressure. I have taken blood pressure medicines for years, but my numbers still have been a little high. Advanced Wellness has brought them down considerable. Advance Wellness is also available through Healthyway.com.