subtherapeutic

adjective
sub·ther·a·peu·tic | \ ˌsəb-ˌther-ə-ˈpyü-tik \
variants: or sub-therapeutic

Definition of subtherapeutic 

: less than therapeutic : having, using, or being a dose that is below what is used for treating disease or producing an optimal therapeutic effect … with a fixed dose of 95 mg/kg/day, initial levels during the febrile phase were subtherapeutic (<20 mg/dL)… —Gideon Koren et al. Farm animals are the target of nearly half the antibiotics produced in the United States, mostly in the form of low or subtherapeutic doses aimed at preventing disease or promoting growth. —Karen Wright

First Known Use of subtherapeutic

1910, in the meaning defined above

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subtest

subtext

subtheme

subtherapeutic

subthoracic

subthreshold

Subtiaba

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The first known use of subtherapeutic was in 1910

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More Definitions for subtherapeutic

subtherapeutic

adjective
sub·ther·a·peu·tic | \ -ˌther-ə-ˈpyüt-ik \

Medical Definition of subtherapeutic 

: not producing a therapeutic effect subtherapeutic doses of penicillin

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