Yes Luis. The medicine database needs to be able to record the medicine strength per unit of administration dose.
g/mg/microgram per mL/capsule/tablet/dose As you rightly suggested this will enable the link between what a doctor might precribe - mg - and what the patient/nurse needs to understand - mL/tablet/capsule. See attached spreadsheet which I created previously. Very best wishes to yourself and the fantastic Gnu Health project for 2017. Andrew
Gnu Health Medication Product Strength.ods
Description: application/vnd.oasis.opendocument.spreadsheet