it was from a online health store website that sells MSM... it also had the RDA for horses too... which was huge as you can imagine...
I dont think you can have too much MSM... its just sulphur at the end of the day and harmless...
Though i didn’t buy mine online as u never no what your getting or how pure it is...
I got mine from Holland & Barret, in the high street. First lot i got was in Tablet form as i thought it would be less hassle, but they are pain the swallow, especially four or five in a row..
So second time around i just got the powder form, 1 teaspoon in a little amount of water, quick stir, two gulps and its gone, much easier, less time consuming and less hassle.
i take 1500mg of Vit C straight afterwards too. Apparently the Vit C aids the MSM to get to work.