Select age group to begin
Patient details
* Height & gender are required for paediatric & adult dosing (used for weight-based calculation). Neonates use actual body weight.
Enter age (and weight) to see doses for the matched age group.
Doses compiled from standard anaesthetic references (BNF for Children; APA/AAGBI guidance; standard anaesthesia texts) and expressed per kg. "Standard dose" shows min–max (with average where applicable); "This patient" multiplies by the entered weight. Ranges are typical adult/child values — neonatal and low-weight dosing must be individually verified, and maximum total doses / concentration limits apply (see Notes). Confirm every value against your current local formulary before use.
Dosing weight (adults): induction agents & opioids are dosed on lean body weight (LBW); non-depolarising relaxants & morphine on ideal body weight (IBW); suxamethonium, sugammadex, emergency & most other drugs on total body weight (TBW). Enter height & gender to apply these — important in obesity. Paediatric/neonatal doses use actual body weight.
Dosing weight (adults): induction agents & opioids are dosed on lean body weight (LBW); non-depolarising relaxants & morphine on ideal body weight (IBW); suxamethonium, sugammadex, emergency & most other drugs on total body weight (TBW). Enter height & gender to apply these — important in obesity. Paediatric/neonatal doses use actual body weight.