Lab 2 test Flashcards
What different ways dictate how a drug can be named?
- Chemical name
- Approved name
- Licensed/proprietary name
Approved name
- Eg. Amoxicillin
- Given by Pharmacopoiea
Licensed/proprietary names
- E.g. Betamox injection, Amoxysol injection, Vetrimoxin injection, Amoxypen injection,Clamoxyl injection (Amoxicillin), Duphamox injection
- Given by manufacturers (based on fantasy)
Types of drug books
- Pharmacopoieas:
- National (British Pharmacopoeia, Pharmacopoeia of US, Pharmacopoeia Hungarica)
- International (European Pharmacopoeia, International Pharmacopoeia -WHO) - Veterinary Formularies
PRESCRIPTION def.
Written order of a practitioner for one or more drugs to be dispensed by a pharmacist to owner/farmer
Which units can be abbreviated in the prescription?
- Grams = g
- Milligrams = mg
- NOT: Micrograms (not mg)
- ‘Milliliter’ (mL or ml)
What is unique about the British Pharmacopoeia that we can´t find in others?
Complete with Formulated preparations and Veterinary
substances
What is in the subscription?
Info. for the pharmacist about what to prepare from the ingredients and how to dispense them.
Eg. “prepare a suspension and send 100ml in a suitable package”
What is in the inscription?
Name, dosage form and strength of proprietary medicine, or the list of the ingredients and their amounts.
What is in the heading?
H1: Name and address of practitioner
Date
H2: Name and address of owner. Animal species, number and/or name.
What is in the superscription?
Rx = recipe
What is in the signature?
Info for the owner about the application of the drug.
E.g. Give two tablets to dog daily for 10 days”
What is contained in the Pharmacopoeia?
All medical substances (active substance+other substances) that are official in particular countries or regions
Which measures can appear on a prescription (numbers with decimals, abbreviations, etc)
- Grams:
- 1 gram or more should be written as 1 g
- Less than 1 gram should be written in milligrams (e.g. 500 mg, not 0.5 g)
- Less than 1 milligram should be written in micrograms (e.g. 100 micrograms, not 0.1 mg)
- ‘Milliliter’ (mL or ml)
Which measures should not be abbreviated?
‘micrograms’, ‘nanograms’, or ‘units’
How long is a prescription valid?
6 months
CD: 28 days
Abbreviations
- sig. - signatur - write (on label)(user info)
- s.i.d. - once daily
- b.i.d. - twice daily
- t.i.d. - three times daily
- q.i.d. - four times daily
Official medicines
Eg. parafin, ethanol, H2O2
-Formulated or non-formulated
MRL
Maximum residue limit
Commission regulation 37/2010 EU
-Table 1: Allowed substances: okay for food-prod animals
o Annex 1: fixed MRL
o Annex 2: no MRL, WP = 0 days
o Annex 3: established but not fixed, still give standard MRL
-Table 2: not for use in food-prod animals. Eg. Methronidazol, Chloramphenicol.
o Annex 4: non-food-prod animals
Special prescription requirements of schedule 2 and 3 drugs
-The prescription must be written indelibly (or computer generated) and signature must be ink or electronic prescription form available since 2015:
- name and address of owner
- date
- name, form and strength of preparation
- total quantity or the number of dosage units in both
words and figures
-Dose to be administered (‘take as required’ is not acceptable).
-The prescriber’s signature, qualification and RCVS registration number
-The animal or herd under the vet’s care
-A pharmacist must not dispense a S2 or S3 drug unless it complies with the above requirements and the prescriber’s address is in the UK.
- In the signature part NO latinisation or abbreviation is allowed (Signature or Label)
- The prescription is valid for 28 days (also S4).
- Repeat prescriptions is not permitted.
Special prescription requirements of schedule 2 and 3 drugs
-Ppt must be written indelibly (or computer generated) and signature must be ink or electronic ppt form available since 2015:
- name and address of owner
- date
- name, form and strength of preparation
- total quantity or the number of dosage units in both
words and figures
-Dose to be adm (‘take as required’ is not acceptable).
-Prescriber’s signature, qualification and RCVS registration nu.
-Animal or herd under the vet’s care
- In signature part NO latinisation or abbreviation allowed (Signature or Label)
- Valid for 28 days (also S4).
- Repeat ppt is not permitted.
Special cases about controlled drugs
• Quinalbarbitone: S2 CD but does not require safe custody – does not need to be kept in the CD cabinet. Does need to be recorded in a register.
• Buprenorphine: S3 CD and its use does not need to be
recorded in CD register but safe custody does apply.
• Ppt of S2, 3 and 4 CDs valid for 28 days.
• S5 CD ppt valid for 6 months
• Repeat ppt not allowed for S2 and S3 CDs. If this is a
pre-printed statement on a prescription, it must be crossed out in ink.