Very quick shipping, good price for the mk677 I bought. However I have noticed a few things that may be cause for concern and I'm worried the mk I Bought may not be what was advertised. Mk677 is supposed to have a slight bitter taste and no odor but mine tastes extremely chemically and smells quite gross. I'm worried this could be a bad product or perhaps I'm wrong, I'll give 3 stars for now because everything was great other than a concern with the product I received. I haven't noticed any extra weight on the scale either but I am just 3 days in with 15mg/daily.