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High doses of ______ can cause increased anxiety, uncomfortable restlessness, and an inability to focus

User Marthijn
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The drug that causes increase anxiety, uncomfortable restlessness, and inability to focus in high dosages is the Nicotine. A nicotine is a substance that is produced by the tobacco leaves in which affects the minds of individuals and that this is a major component of Tobacco which is commonly being smoked.

User Bunti
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