Thanks, Erin. I read a study years ago about vagal tone being improved by Mestnon (similar to POTS).

A six-month randomized controlled trial of exercise and pyridostigmine in the treatment of fibromyalgia. - PubMed - NCBI

A Six-Month Randomized Controlled Trial of Exercise and Pyridostigmine in the Treatment of Fibromyalgia (Text of above article)

Impaired growth hormone secretion in fibromyalgia patients: evidence for augmented hypothalamic somatostatin tone. - PubMed - NCBI

A combination of 6 months of treatment with pyridostigmine and triweekly exercise fails to improve insulin-like growth factor-I levels in fibromyal... - PubMed - NCBI

Annie