I'm having those problems also again. I think my potassium intake is too low.

Theraworx lotion works wonders for cramps for my Hubby----got ours at Walgreen's.

Mine was caused by medication. My doctor had doubled my Caduet dosage and it was too strong for me. It took a heart doctor to catch it. It was very bad leg pain.

I dont know for sure if copd causes or encourages cramps but i did not have cramps prior to my copd. I take magnesium , about 3 drops a day and it stops them.

Thanks for all your replies!