if you eat it in very small amounts every few hours it'd be roughly the same as the extended release. we did absolutely stacks of this stuff in uni. including a whole module on stamping out pills and running them through various dissolution tests and the rest. they basically just coat the granules in something that takes incrementally longer to dissolve. like you could have five different granule batches, coat each in a slightly thicker protective layer, blend them together, add the extra pill ingredients like binder and stamp them out.
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