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Medications and supplements A metallic taste in the mouth is a common side effect of certain medications, such as antibiotics ( metronidazole , clarithromycin , tetracycline ), blood pressure medications ( captopril ), gout medicines ( allopurinol ), diabetes medications ( metformin ), glaucoma medicines ( methazolamide ), and psychiatric drugs ( lithium )

2010 Mar;16(3):BR81-88

While certain features of the invention have been illustrated and described herein, many modifications, substitutions, changes, and equivalents will now occur to those of ordinary skill in the art

No new formulations are in development

For longer storage, some researchers freeze aliquots at -20 degrees Celsius, though repeated freeze-thaw cycles degrade peptides