L2 - Introduction into medicinal products Flashcards

1
Q

pharmaceutics

A
  • process of turning a new chemical entity (NCE) into a medication to be used safely and effectively by patients
  • aka science of dosage form design
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2
Q

for pharmaceutics we need an understnaqding of:

A
  • basic physical chemistry
    • necessary for the effective design of dosage forms
  • relevant body systems
    • how drugs arrive there following administration
  • dsign and formulation of medicines
    • dosage from desing
  • manufacture
  • avoidance and elimination of microorganisms in medicine
  • product performance testing
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3
Q

medicines

A
  • drug delivery system
  • administartion of drug(s) into body in a safe, efficient, accurate, reproducible, and convenient way
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4
Q

when do medicines = drugs

A
  • when there are no ‘excipients’ present
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5
Q

excipient

A
  • substance formulated alonside the active ingredient of a medication
  • many purposes, e.g.
    • stability
    • bulking agents
    • theraputic enhancement etc
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6
Q

major factors that impact dosage from design

A
  • physiochemical properties of the drug
    • e.g. pKa
  • biopharmaceutical considerations
    • e.g. how adminsstration route of dosage affects rate and extent of drug absorbtion in the body
  • therapeutic considerations
    • e.g. patient popuilation, disease state
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7
Q

suspension

A
  • medicine mixed with a liquid, usually water, in which it can not dissolve and therefore remains intact in the form of small particles
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8
Q

topical

A
  • applied directly to part of the body
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9
Q

transdermal

A
  • route of administration wherein active ingredients are delivered across the skin for systematic distribution
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10
Q

buccal

A
  • relating to mouth
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11
Q

Variation of onset of action for different dosage forms:

seconds

A

intravenous injection

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12
Q

Variation of onset of action for different dosage forms:

minutes

A
  • intramascular and subcutaneous injection
  • buccal tablets
  • aerosols
  • gases
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13
Q

Variation of onset of action for different dosage forms:

minutes to hours

A
  • solutions
  • suspensions
  • powders
  • granules
  • capsules
  • tablets
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14
Q

Variation of onset of action for different dosage forms:

several hours

A
  • enteric coated formulations
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15
Q

Variation of onset of action for different dosage forms:

days to weeks

A
  • implants
  • depot injections
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16
Q

subcutaneous injection

A
  • subcutaneous - under the skin
  • short needle used to inject a drug into the tissue layer between the skin and the muscle
17
Q

granules

A
  • primary powder particles are made to adhere to form larger multiparticle entities called granules
  • forms bonds between them
18
Q

enteric coating

A
  • polymer barrier applied on oral medication
  • prevents its dissolution or disintegrations in the gastric environment
  • e.g. prevents drug being released in stomach due to acidic condtions
  • some are unstable at gastric pH
  • used in targeting
19
Q

depot injection

A
  • slow-release, slow-acting form of medication
20
Q

Medicines Act 1968 mand Council Direction 2001/83/EC

A
  • control sale and supply of medisicines
  • legal status of medicinal products is part of the marketing authorisation
21
Q

what are the different availabilities of products?

A
  • POMs
    • prescription only medicines
  • P
    • in a pharmacy, w/o prescription, under pharmacist supervision
  • GSL
    • General Sale (lisence) can be sold in general retail outlets
22
Q

who can isssue prescriptions

A
  • doctors
  • dentists
  • nurse independant prescribers
  • pharmacist independant prescribers
  • supplementary prescribers
23
Q

how can same medicine have differnet legal classifications?

A
  • different strength
  • different pack size