Question

Define the following terms as used in medicine: 

1. Drug 
2. Prescription 
3. Dosage 
4. Drug abuse

Answer 1

1. Any substance, natural or manufactured which when used alters body functions
2. giving written instructions by a qualified medical officer giving details on type
   of drugs and how they should be used 
3. amount of drug/medicine to be taken at a time or regularly on a period of time
4. Use of a drug for a use other than what it is meant for/under prescription or over prescription