I started using the product about 3 years ago. At the time I was still running and the wife and I moved to an area that was all hills most of the quite steep. My normal path was mostly up hill starting off, I had reached a plateau of about 1/2 way up the last hill. I read about you product and started taking it, after about 6 weeks later I realized one day that I was making it all the way to the top of that last hill. The other thing I did was to cut my blood pressure meds in half wit lower pressure that I had had wit the second pill. When I went for my check up the doctor asked what I had done because my blood pressure was really good. I ran out of the dD3 about 8 months ago and kept putting off ordering more some times I just forgot other times because of the cost. A few weeks ago when I took my blood pressure it was back up again so I got right on the computer and got a 6 month supply.They product is worth the money being a older person this product has a flavor and helps with pain reliefMy wife started using this product about 7 weeks ago, she was taking Lisinopril ( a Blood Pressure Medication), and has since NOT taking the medication, as her Blood Pressure EVERY DAY is around 132/75 at the highest on each end. I use the medication for my inflamed nerve on the outer portion of my left thigh. I have been taking this in conjunction with a product called Liquid BioCell by a company called Jusuru, out of California. I have been taking the Marine D3 for about 2 weeks now, and the Liquid Biocell for almost 2.5 months. My leg is about 95% better, but, it does hurt on occasion, because I am on my feet all day (8-12 hours). According to my Medical Doctor Specialist, my inflamed nerve is a very very slow process in healing--which could take a year or more to fully heal. I don't know which product is working better, but, at this point, the combination is working very well, and I cant' afford to be in severe pain as prior to taking these two products. I highly recommend this product for purchase!!!I have only been using it for about 3 weeks, so I don't know the results yet. However, I had used this product over a year ago, and the results to me at that time were amazing. About 2 months after I started taking the product I went for my routine blood work. To my surprise, my triglycerides had dropped 120 points. My LDL went down and my HDL went up. And for the first time in over a decade my cholesterol had dropped below 200 to a reading of 193, a drop of about 28 points. I wanted to stay on the product, but it is pricey and I couldn't after my initial supply ran out. I hope to stay on it longer this time because of that. I don't know if this will work on everyone, or if I will get the same results again, but I am going to give it a shot.My husband has had back surgery due to a terrible auto accident a few years back. He does much better when he's taking these Marine-D3 supplements. We can't put our finger on why. It just is true. It's true enough that we've been shelling out the bucks for this product for well over a year now. If you try this product and you think it's making a positive difference for you, but you're not sure, here's what I suggest (and it's what we did): You've taken one or two bottles and you think it's helping... but is it the Marine-D3 or something else going on in your life right now? Stop taking it for a couple of weeks. Do you feel a (not good) difference? Start taking it again. Better? OK, then you can consider buying in the volume packs to save some money!I think the product is a fantastic product I have been using it for years. Likewise it's a very very pricey product that should have been coming down in price after being on the market this long. As a consumer I would believe that more people would use and enjoy the benefits of the product if it was more affordable. I purchased a six-month supply again this time but once they are gone I'm going to seriously consider looking for a suitable substitute unfortunately. In today's economy and expenses spending hundreds of dollars on vitamins is hard to justify in the family budget.with regard to delivering the product was delivered with no problems thank you AMAZON.Knee and lower back pain reduced significantly; blood tests showed greatly increased Vitamin D presence; capsules very easy to swallow. Great product all around.Weve been taking this my husband and I for a year now. We always order the 6 pack. It lasts us about three months. It replaces the OTC omega 3s we used to take from Walmart. I noticed for me that it helps with short term memory lapses a bit. For my husband it helps him with overall energy. So has different effect for different people. Weve decided this supplement is one we will not go without. Hope it continues to be available.