I am unable to find your phrase per se. It does not make a lot of sense to me, however here is my finding:


Estimation of the release profiles of multi-unit dose tablets of ...https://www.ajol.info › tjpr › article › view
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by MU Uhumwangho · 2008 · Cited by 4 — Capsules or tablets can be used either as single unit or multi-unit dosage forms for controlled release applications by formulating them with

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Note added at 3 hrs (2021-08-03 15:10:09 GMT)
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and this:


Pop-up pill could stay in stomach to release drugs for days ...https://www.statnews.com › 2016/11/16 › popup-pill-dr...
16 Nov 2016 — A meeting between Bill Gates and Boston researchers four years ago has led to the development of a ***multi-dose capsule*** that, researchers said ...

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Note added at 3 hrs (2021-08-03 15:15:49 GMT)
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In my very humble opinion it would make more sense (at least to me) to say

a multi-dose capsule containing five doses


Thimerosal in Flu Vaccine | CDChttps://www.cdc.gov › flu › prevent › thimerosal
16 Oct 2015 — Thimerosal is an ethyl mercury-based preservative used in vials that contain more than one dose of a vaccine (multi-dose vials) to prevent ...