Long-acting analogue insulin
Insulin glargine
Brand names: Lantus, Abasaglar, Toujeo, Semglee
Adult dose
Dose: Individualised; usually OD same time daily. Toujeo (300 units/mL) NOT dose-equivalent to 100 units/mL
Route: SC
Frequency: OD
Clinical pearls
- Duration 18–24h (peakless)
- Toujeo 300 units/mL gives slightly longer/flatter profile than Lantus 100 units/mL — switch with caution
Contraindications
- Hypoglycaemia
Side effects
- Hypoglycaemia
- Weight gain
- Lipohypertrophy
Interactions
- β-blockers
- Steroids
- Alcohol
Monitoring
- CBG
- HbA1c
Reference: BNF; NICE NG17/NG28; https://bnf.nice.org.uk/drugs/insulin-glargine/. Verify against your local formulary and the latest BNF before prescribing.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Pathways
- Diabetic Ketoacidosis (DKA) · JBDS 2013 / Joint British Diabetes Societies; NICE NG17
- Adult Hypoglycaemia (Treated Diabetes) · JBDS-IP (2023): Hospital Management of Hypoglycaemia
- Adrenal Crisis · Society for Endocrinology Emergency Guidance (2024)
- Type 2 Diabetes Management · NICE NG28 2022
- Hyperthyroidism Management · BTA / ETA 2018
- Adrenal Insufficiency · Society of Endocrinology / ESE 2016