Guest over a year ago In reply to MSM taken correctly on 2017-01-26 - click to read Use it in the pure form for the last 10 day and have pretty bad headaches anyway Reply Loading... Guest over a year ago In reply to anonymous on 2017-10-13 - click to read Taking it in pure form for 10 days now and get the bad headaches. take one table spoon a day and drink a lot. Reply Loading...