Hos mennesker nedbrydes insulin glargin delvist i det subkutane væv ved at danne de aktive metabolitter 21A- Gly- insulin og 21A- Gly- des- 30B- Thr- insulin i Beta- kædens carboxylende.
In man, insulin glargine is partly degraded in the subcutaneous tissue at the carboxyl terminus of the Beta chain with formation of the active metabolites 21A-Gly-insulin and 21A -Gly-des-30B-Thr-insulin.