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Dose - GCSE Biology Definition

Reviewed by: Lára Marie McIvor

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In biology and medicine, a 'dose' refers to the specific amount of a medicine or substance that is given to a person or used in an experiment. For example, if someone is taking medicine, the dose is how much they are supposed to take, like two tablets. The right dose is important because too little might not help, and too much could be harmful. Doctors and scientists determine the correct dose to make sure the substance is safe and effective for use. In experiments, controlling the dose helps to study how different amounts of a substance affect living organisms.

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Lára Marie McIvor

Reviewer: Lára Marie McIvor

Expertise: Biology, Psychology & Sociology Subject Lead

Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.

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