The phenomenon of declining physiological effects of taking a drug after sustained use is referred to as

The term that describe declining physiological effects as a result of repeated use if a drug is Drug tolerance

Therefore, Drug tolerance is a term to describe reduction in effect of a particular drug.

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The phenomenon of declining physiological effects of taking a drug after sustained use is referred to as drug tolerance.

Explanation:

Drug tolerance can simply be defined as the decreasing effects of a drug on a person continuously using it. Over time, the body becomes adapted to a certain dose of a drug. The person further has to take more heavy doses for the drug to work.  Drug tolerance can be very dangerous for a person as an increased amount of dose can lead to serious illness and even cause death.

The tolerance to drugs is categorized into two types:

1. psychological  

2. behavioural  

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explanation:

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