Drugs are substances that affect the way the AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco works. Some drugs are useful. Many AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco are dangerous.

AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco speed up the nervous system. They make people feel more AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco and alert. AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco is a mild stimulant. AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco (speed) is a stimulant. This can produce a feeling of boundless energy but a person can become dependent on it.

AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco slow the nervous system down. They they make a person go to sleep. AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco are sedatives.

Painkillers which are also known as AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco. They stop the pain receptors from sending AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco to the brain. AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco is a mild pain killer. AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco is a very strong pain killer. Heroin is very very addictive.

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AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco affects the lungs and circulatory system. It causes lung AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco other lung diseases and AlcoholAmphetamineanalgesicsawakeBarbituatesbodyCaffeinecancerdrugsheartHeroinlivermessagesParacetamolSedativesStimulantsTobacco disease.