Theory on pharmacology

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  • Created by: Jonathan
  • Created on: 07-10-08 11:49

what is pharmacology

Pharmacology is concerned with the study of how a substance interacts with an organism to produce a change.

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Concerned with the study of the effects of the body on the drug including absorption, distribution, metabolism and excretion.

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Each professional must ensure they fullfil their duties according to the approved standard of practice expected.

Accountable to

  • Criminal courts
  • Civil courts
  • NMC
  • Employer
  • University
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controlled drugs

Controls the supply, sale and administration of strong drugs eg opiates



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A substance produced by or derived from a micro organism, that destroys or inhibits the growth of other microorganisms. Used to treat infection that are caused by organisms that are sensitive to them eg urinary tract infection.

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other types of drug

antiemetic - anti nausea

antipyretic - lowers temperature

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6 r's

  • Right patient
  • Right drug and expiry date
  • Right dose
  • Right time
  • Right route
  • Right prescription
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  • Medicines act 1968
  • Misuse of drugs act 1971

Both control the supply storage and administration of drugs.

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Concerned with the study of the effects of the drugs on the body including effective doses and responses.

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Side effects

A side effect is the unwanted effects of a drug which is known about and cannot be seperated from the main action of the drug eg nausea vomiting etc.

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Contra indications

In some situations the drug should not be given if the client is taking another drug as they may have contra indications. A reaction between two drugs which causes unwanted side effects eg Ibuprofen and gastro bleeding.

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Adverse drug reaction

An unusual unwanted or unexpected reaction to the drug eg anaphlacsis. Reported by the yellow card system (found in the BNF)

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Generic and proprietary names

  • Proprietary name of drug is manufacturers trademark and must start with a capital letter eg Felendil
  • Generic name of drug is the actual name of the drug must be written in lowercase eg paracetemol.
  • DOH 1999 recomended drugs be prescribed by their generic name.
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DOH 2001 describe polypharmacy as being prescribed four or more drugs. this is therefore associated with more adverse drug reactions eg most likely in the elderly.

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A prescription must be

  • Signed
  • Accurate
  • Appropriate
  • Legible
  • In date
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Medicine act categories

  • Pharmacy only
  • General sales list (can be sold anywhere)
  • Prescription only (pom) - Available only on practitioners prescription.
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