One of my neighbors is a flight attendant that takes this. I think she gets it shipped in from Amazon, because I accept a lot of her packages when she is away. I asked my eye doc about it and was told it won't hurt to take it, but eating a balanced diet was just as good. I take several supplements but I don't take this one. There is another supplement I won't identify to avoid a debate, but my doctor said was only good because of the placebo effect. It's always been funny to me how something like a placebo can trick the mind into doing strange things like that. My old family doctor from way back in the 60s used to use them all the time. I only know this because I had a chance meeting with one of his staff ladies years after he died. He had sugar pills made and handed them out in the office. A placebo is NOT a FAKE cure. It's just weird how a medical professional can use them to trick the mind into doing things like easing pain. Anyway, this is how I feel about a lot of these supplements.