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2812
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216
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2573
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2390
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923
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2786
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1108
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619
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236
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632
3.2.1.2 Modified celluloses
While HPMC is generally considered safe, some people may experience mild side effects, especially when consumed in high doses. These side effects may include gastrointestinal discomfort, bloating, or diarrhea. However, these effects are usually mild and short-lived and disappear once supplementation is stopped or the dose is reduced.


I have also found a number of forums online where people have made the connection between bloating, wind and discomfort, to eating foods (or supplements) that contain it.
HPMC
3.2.5 Safety for user
(2) Ceramic manufacturing industry: widely used as adhesives in the manufacture of ceramic products.h after hardening.

hpmc synthesis.

