BT_GS 1.22 Describe the mechanisms of action and potential adverse effects of buffers, anti-oxidants, anti-microbial and solubilising agents added to drugs
T / F glycerol is part of the formulation of propofol – it is added as an emulsifying agent
T / F the intravenous formulation of paracetamol contains mannitol and povidone – both are to improve solubility
T / F amiodarone is formulated in alcohol and polysorbate 80 – these can cause hypotension with a rapid bolus
T / F phenytoin is soluble in water if the pH is < 3 – therefore hydrochloric acid is added to the ampoule
T / F sodium metabisulphite is added to some drugs ampoules as an anti-oxidant and anti-microbial – it is required to make morphine suitable for intrathecal use
References
- MacPherson R. Pharmaceutics and the anaesthetist. Anaesthesia, 2001; 56: 965-79
- MIMS and/or product info leaflets for each drug