How to take Lantus tablets correctly
How a tablet is swallowed matters for absorption, gastric tolerance and avoiding oesophageal irritation. Lantus (Insulin Glargine) at 100 IU/mL is straightforward to take for most adults but a few practical points reduce variability and minimise local side effects.
Standard administration of Lantus
Most pre-filled pen, vial of Insulin Glargine are taken whole with a full glass of water (about 200 mL). Sitting or standing upright for 10–15 minutes after dosing reduces the risk of the tablet lodging in the oesophagus and causing local irritation. Sufficient water carries the medication into the stomach where dissolution and absorption begin.
Practical tips and what to avoid
According to the prescribing information for Insulin Glargine, taking Lantus with too little water or while lying down increases oesophageal exposure and can cause heartburn-like irritation in susceptible users. Lukewarm or cool water is preferable to very hot water. Tablets should not be chewed unless explicitly authorised by the prescriber for the formulation; 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…
Frequently asked questions
How much water should I take with Lantus? ▾
A full glass — about 200 mL — is the standard recommendation for Lantus at 100 IU/mL. Less water increases the risk of the tablet sticking on the way down and causing local irritation.
Can I take Lantus without water? ▾
It is not advisable. Tablets without water can lodge in the oesophagus and cause local irritation; some formulations require water for proper dissolution. Always take Lantus with adequate water unless the formulation explicitly says otherwise.
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.