Lantus and surgery: what to do before and after
Surgery raises specific medication-management questions, and getting the answer right matters because both unintended drug interactions during anaesthesia and abrupt discontinuation of important chronic therapies carry risk. Whether Lantus (Insulin Glargine) needs to be stopped before surgery, continued through, or paused for a defined window depends on Insulin Glargine and the type of procedure.
Before-surgery decision
For most chronic medications including many Diabetes Treatment agents, the surgical team or anaesthetist makes the stop-or-continue decision during pre-op assessment. Considerations include bleeding risk, anaesthesia interactions, the urgency of the underlying condition and the type of procedure. According to most guidelines, surprises are avoided by listing all medications including Lantus at 100 IU/mL on the pre-op form.
After surgery
Post-operative resumption of Lantus depends on the surgical course, the medication's impact on recovery (e.g. wound healing, gastric tolerance, mobility) and any new prescriptions added after surgery. Insulin glargine binds the insulin receptor with similar affinity to human insulin, activating intracellular signalling that increases glucose uptake in muscle and adipose tissue, suppresses hepatic g… Resuming on schedule is usually the goal as soon as oral intake and clinical stability allow.
Frequently asked questions
Do I need to stop Lantus before surgery? ▾
It depends on Insulin Glargine and the procedure. The pre-op assessment is where this is decided, ideally a week or more before surgery. Bring the full medication list including Lantus at 100 IU/mL so the team can advise.
When can I restart Lantus after surgery? ▾
Resumption timing depends on the procedure, the recovery course and any interactions with new postoperative medications. Many patients restart Lantus on the day of discharge or earlier; some need a longer pause. The surgical team or prescriber confirms the timing.
More on Lantus
- With alcoholLantus and alcohol — is it safe to drink?
- With foodShould Lantus be taken with food?
- Side effectsLantus side effects: common, rare and warning signs
- Dosage guideLantus dosage guide: how much to take and when
- OnsetHow fast does Lantus start working?
- DurationHow long does Lantus last?
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.