You may want to search this keyword:
"Beta blockers myopathy"
There are reports of beta blockers causing myopathy:
example:
Drug-induced myopathies. - PubMed - NCBI
http://mootha.med.harvard.edu/PubPDFs/Setoguchi2010.pdf
Further testing may reveal if your arm weakness is nerve induced, or muscle induced.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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