I have terrible muscle cramps, this seems to improve it. Been on a daily dose for over a year. Sometimes it comes in a plastic bag that catches leaks. This one didn't and it soaked through the box. Tape on the cap isn't enough. So I could complain and here's the infinite glitch, Amazon would replace it and not ask for a return. Free every time it leaks??? Nope, not for me. They do a great job. Not perfect, but neither am I and this is a great time to apply a little grace. You can too, it's good for you, just like these trace minerals