I do not know specifically of any sources of information concerning medication/aluminum interactions.<br><br>My best guess is that these aluminum capsules from Bison are not the best storage for medications of any type. Some medications like Aspirin are acidic and bare aluminum and acid will corrode. Anodized aluminum is much more resistant to corrosion but still probably not the best. Many medications degrade with both heat and moisture. I have not tested my Bison capsule for waterproofness (fairly sure this is not a word). <br><br>I carry my medications in a stainless steel pill fob that is 12 x 60 mm. It fits aspirin and my other tablets perfectly. I trust it more than the Bison capsule since the O-ring is internal rather than exposed, and stainless steel is much less prone to damage from acids. I have tested my stainless capsule by running it through the washing machine, the tablets were completely dry. I did not run it through the dryer though .<br><br>My container is <br><br><br>The Key Chain version, I bought mine at a luggage store for considerably more than this one.<br><br>Also available <br><br><br> Fatter ones or even this 2 compartment one.<br><br>I have not ordered from these sites, just using their pictures for examples.