I've been taking the Glucosamine chondroitin combination for over a
year.

About eight months ago I started getting blisters on my hands.  Like
two a week.  I experimented with taking away things I touched,
detergents and soaps.  But I still got the blisters.  The only pills I
take internally are Lipitor and the G/C combination I mentioned.  I
recently realized the blisters are usually on or near my joints.

I've asked my doctor, but haven't had a response yet.  Any insights?

(I have hip osteo-arthritis and the Glucosamine seemed to work/help
me.)