Great product, based on actually raising my Vitamin D levels (25-hydroxy). After I bought these I saw the “how much do you need to raise your D” formula by the Vitamin D council and it was clear that 7,000 IU would be more appropriate for me, so I then also bought the similarly-formulated Country-Life 1,000 IU softgel product and take two of those at the same time as one of these. Based on the studies, I try to take my D with a meal every day, especially one containing fat. For reasons I won’t go into, I retested my 25-hydroxy D at one month instead of the intended three months, and my level has already gone up from 20 to 40! Based on previously seeing my levels go *down* after 1 month on 1,000 IU of a dry D product taken at night, I was pleasantly surprised at how well it is working. I can’t say I feel any different (at least not yet). And VERY IMPORTANTLY, I am monitoring very closely for any possible D-induced increase in my serum calcium, as having elevated (or even near-elevated) serum calcium generally confers MUCH more serious health risks than having below-range D. So far so good on that count, though, but since my serum calcium’s in the high-9’s already I need to be careful. Once I’m where I want to be on the D (ideally about 50 or 60), my “dilemma” will be figuring out how much to take ongoing to sustain that level instead of either continuing to increase or dropping back down.