I've discovered high-dose liquid Vit D through iherb which is wonderful since I can't get anything like it where I live. I was having a ton of hair fall out post pregnancy. Now you do shed quite a bit then, but this was beyond a normal amount and length of time for me. And, my psoriasis was back. Two years ago, I had an ugly bout of psoriasis on my scalp and shins and the high-dose vit D drops cleared it right up. This time, I started taking the drops. I take 5-10 drops 2-3 times a day and let it sit under my tongue for a few seconds. My hair stopped falling out and the psoriasis started clearing. I stopped for a few days (not sure why) and my hair started falling out again and the psoriasis started getting itchier. So, I'm back to taking my drops. I realize I'm taking way more than the 'recommended' dose, but I've read that you can get approx. 20,000 iu a day from the sun, so obviously we can handle it. I'm very pleased with this product and I LOVE iherb. The prices and shipping are impressive.