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Are they pure or adulturated with calcium? Most of the caffeine pills I've spotted are not just caffeine and I think this is the chalkiness you would be experiencing.


They’re pure as far as I know. Would calcium be listed as an ingredient?


Yes should be on the box somewhere, they usually claim to add it to reduce bone loss. Example label: https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=0dbca...


It’s very unlikely they’re pure caffeine. If it’s a pressed pill (versus a capsule) they’re definitely not. It needs binders to hold it together.


Gotcha, I take capsules. They’ve got rice powder to add volume I assume, but other than that I think it’s pure caffeine.




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