msm and acidity

hi,

I read that on curezone without any comments:

*Don't take ANY MSM or glutamine. MSM is a sulphur,
which is acidic, not alkaline, and can cause hives. If
you have joint pain on the right side of your body,
then all that sulphur is depleting your copper and
making inflammation worse. Arthritis people are helped
by MSM so it got popular, but Crohn's people get
worse. MSM will also interfere with calcium.'

can somebody comment that please?

I read MSM balances the ph out smoothly, how can it be acidic then?

thx.