The underlying illness suffered by a mother, rather than the properties of any drug they have taken, is the usual reason for them not being eligible.
In general, traces of drugs in cord blood are harmless to any recipient. However, mothers treated with certain drugs are deferred for periods associated with the pharmacokinetic properties of the drug. Examples are some drugs used to treat acne and psoriasis. All such drugs have their own entry in the A-Z section.
This section was last updated in TDSG-CB Edition 203, Release 02.