Insulin glargine

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Insulin glargine
Toujeo 300 IU-ml inj.jpg
Toujeo branded insulin glargine
Clinical data
Trade namesLantus, Toujeo, Abasaglar, others
Other namesinsulin glargine-yfgn
License data
Routes of
ATC code
Legal status
Legal status
  • AU: S4 (Prescription only)
  • UK: POM (Prescription only) [2]
  • US: ℞-only [3]
  • EU: Rx-only [4][5]
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Onset of action~1 hours[6]
Duration of action24 to 36 hours[6]
  • Recombinant human insulin
CAS Number
  • none
CompTox Dashboard (EPA)
ECHA InfoCard100.241.126 Edit this at Wikidata
Chemical and physical data
Molar mass6062.96 g·mol−1
 ☒NcheckY (what is this?)  (verify)

Insulin glargine [GLAR geen], sold under the brand name Lantus among others, is a long-acting insulin, used in the management of type I and type II diabetes.[6] It is typically the recommended long acting insulin in the United Kingdom.[7][contradictory] It is used once a day as an injection just under the skin.[6] Effects generally begin an hour after use.[6]

Common side effects include low blood sugar, problems at the site of injection, itchiness, and weight gain.[6] Other serious side effects include low blood potassium.[6] NPH insulin rather than insulin glargine is generally preferred in pregnancy.[7] After injection microcrystals slowly release insulin for about 24 hours.[6] This insulin causes body tissues to absorb glucose from the blood and decreases glucose production by the liver.[6]

Insulin glargine was approved for medical use in the United States in 2000.[6] It is on the World Health Organization's List of Essential Medicines.[8] In 2019, it was the 36th most commonly prescribed medication in the United States with more than 19 million prescriptions.[9][10]

Medical uses[edit]

The long-acting insulin class, which includes insulin glargine, do not appear much better than neutral protamine Hagedorn (NPH) insulin, but do have a greater cost, making them, as of 2010, not cost effective for the treatment of type 2 diabetes.[11] It is unclear if there is a difference in hypoglycemia, given the significance of dose, and not enough data to determine any differences with respect to long term outcomes.[12] It is not typically the recommended long acting insulin in the United Kingdom.[7]

Mixing with other insulins[edit]

Unlike some other longer-acting insulins, glargine must not be diluted or mixed with other insulin or solution in the same syringe.[13] However, this restriction has been questioned.[14]

Adverse effects[edit]

Common side effects include low blood sugar, problems at the site of injection, itchiness, and weight gain.[6] Serious side effects include low blood potassium.[6]

As of 2012, tentative evidence shows no association between insulin glargine and cancer.[15] Previous studies had raised concerns.[16]


Mechanism of action[edit]

Insulin glargine differs from human insulin by replacing asparagine with glycine in position 21 of the A-chain and by carboxy-terminal extension of B-chain by 2 arginine residues. The arginine amino acids shift the isoelectric point from a pH of 5.4 to 6.7, making the molecule more soluble at an acidic pH and less soluble at physiological pH. The isoelectric shift also allows for the subcutaneous injection of a clear solution. The glycine substitution prevents deamidation of the acid-sensitive asparagine at acidic pH. In the neutral subcutaneous space, higher-order aggregates form, resulting in a slow, peakless dissolution and absorption of insulin from the site of injection.[17] It can achieve a peakless level for at least 24 hours.

Acceptance and repartition in the body[edit]

Insulin glargine is formulated at an acidic pH 4, where it is completely water-soluble. After subcutaneous injection of the acidic solute (which can cause discomfort and a stinging sensation), when a physiologic pH (approximately 7.4) is achieved the increase in pH causes the insulin to come out of solution resulting in the formation of higher order aggregates of insulin hexamers. The higher order aggregation slows the dissociation of the hexamers into insulin monomers, the functional and physiologically active unit of insulin. This gradual process ensures that small amounts of insulin glargine are released into the body continuously, giving an almost peakless profile.


The development of insulin glargine took place at Sanofi-Aventis's biotechnology competence center in Frankfurt-Höchst. Sanofi supplies the product to over 100 countries and more than 3.5 million patients worldwide. This makes Lantus Germany's largest and most important export pharmaceutical product. Sanofi-Aventis increased its turn-over with Lantus around 28% to €2.45 million, of which €130 million was from Germany, where approximately 1.8 million people with diabetes use the product. In 2007, Lantus was the 15th highest selling pharmaceutical product in Germany.[citation needed]

The investment in the production of Lantus and insulin pen manufacturing in Frankfurt-Höchst cost €700 million. In 2008 a new manufacturing plant was established for further insulin pen manufacturing with an investment of €150 million. At Sanofi-Aventis the production of Lantus created 3000 jobs in Berlin and Frankfurt-Höchst.[citation needed]

On 9 June 2000, the European Commission formally approved the launching of Lantus by Sanofi-Aventis Germany Ltd. in the entire European Union.[18] The admission was prolonged on 9 June 2005.[19]

A three-fold more concentrated formulation, brand name "Toujeo", was introduced after FDA approval in 2015.[20][21]

Society and culture[edit]


Abasaglar was approved for medical use in the European Union in September 2014.[22]

Lusduna was approved for medical use in the European Union in January 2017.[23]

In March 2018, insulin glargine (Semglee) was approved for medical use in the European Union.[24]

In July 2021, insulin glargine-yfgn (Semglee) was approved for medical use in the United States as the first interchangeable biosimilar of Lantus.[25]

Patent expiry[edit]

Patent protection for insulin glargine expired in most countries in 2015[citation needed] and in the U.S.A. is expected to expire on 2027-07-05.[26] Insulin glargine from competitor Eli Lilly became available in most countries during 2015, under the brand names Basaglar (as a follow-on in the US) and Abasaglar (as a biosimilar in the EU).[citation needed] Biosimilar insulin glargine has only been released in 100U/mL strength to date, and biosimilar equivalents in the 300U/mL strength of Toujeo are yet to launch.[27]

See also[edit]


  1. ^ "Insulin glargine Use During Pregnancy". 6 April 2020. Retrieved 4 September 2020.
  2. ^ "Lantus 100 units/ml solution for injection in a cartridge - Summary of Product Characteristics (SmPC)". (emc). Retrieved 7 May 2020.
  3. ^ "Lantus- insulin glargine injection, solution Lantus SoloStar- insulin glargine injection, solution". DailyMed. Retrieved 29 July 2021.
  4. ^ "Lantus EPAR". European Medicines Agency (EMA). Retrieved 28 July 2021.
  5. ^ "Toujeo EPAR". European Medicines Agency (EMA). Retrieved 28 July 2021.
  6. ^ a b c d e f g h i j k l "Insulin Glargine Monograph for Professionals". AHFS. Retrieved 23 December 2018.
  7. ^ a b c British national formulary: BNF 76 (76th ed.). Pharmaceutical Press. 2018. p. 701. ISBN 9780857113382.
  8. ^ World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization. hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.
  9. ^ "The Top 300 of 2019". ClinCalc. Retrieved 16 October 2021.
  10. ^ "Insulin Glargine - Drug Usage Statistics". ClinCalc. Retrieved 16 October 2021.
  11. ^ Waugh, N; Cummins, E; Royle, P; Clar, C; Marien, M; Richter, B; Philip, S (July 2010). "Newer agents for blood glucose control in type 2 diabetes: systematic review and economic evaluation" (PDF). Health Technology Assessment. 14 (36): 1–248. doi:10.3310/hta14360. PMID 20646668.
  12. ^ Singh SR, Ahmad F, Lal A, Yu C, Bai Z, Bennett H (February 2009). "Efficacy and safety of insulin analogues for the management of diabetes mellitus: a meta-analysis". CMAJ. 180 (4): 385–97. doi:10.1503/cmaj.081041. PMC 2638025. PMID 19221352.
  13. ^ American Diabetes Association (2003). "Position statement: Insulin administration". Diabetes Care. 26 (Suppl. 1): 121–124. doi:10.2337/diacare.26.2007.S121. PMID 12502637.
  14. ^ Kaplan, W.; et al. (2004). "Effects of Mixing Glargine and Short-Acting Insulin Analogs on Glucose Control". Diabetes Care. 27 (11): 2739–2740. doi:10.2337/diacare.27.11.2739. PMID 15505016.
  15. ^ Tang, X; Yang, L; He, Z; Liu, J (2012). "Insulin glargine and cancer risk in patients with diabetes: a meta-analysis". PLOS ONE. 7 (12): e51814. Bibcode:2012PLoSO...751814T. doi:10.1371/journal.pone.0051814. PMC 3526637. PMID 23284776.
  16. ^ Rendell, M; Akturk, HK; Tella, SH (March 2013). "Glargine safety, diabetes and cancer". Expert Opinion on Drug Safety. 12 (2): 247–63. doi:10.1517/14740338.2013.770469. PMID 23394441. S2CID 9224923.
  17. ^ Bolli, G.; et al. (1999). "Insulin analogues and their potential in the management of diabetes mellitus". Diabetologia. 42 (10): 1151–1167. doi:10.1007/s001250051286. PMID 10525654.
  18. ^ "Lantus EPAR". European Medicines Agency (EMA). Retrieved 7 May 2020.
  19. ^ EPAR Lantus Archived 22 November 2006 at the Wayback Machine, German summary of admission report of EMEA (PDF)
  20. ^ "Sanofi Receives FDA Approval of Once-Daily Basal Insulin Toujeo" (Press release). Sanofi. 25 February 2015. Archived from the original on 27 February 2015.
  21. ^ "Toujeo: FDA-Approved Drugs". U.S. Food and Drug Administration (FDA). Retrieved 7 May 2020.
  22. ^ "Abasaglar EPAR". European Medicines Agency (EMA). Retrieved 28 July 2021.
  23. ^ "Lusduna EPAR". European Medicines Agency (EMA). Retrieved 28 July 2021.
  24. ^ "Semglee EPAR". European Medicines Agency (EMA). Retrieved 28 July 2021.
  25. ^ "FDA Approves First Interchangeable Biosimilar Insulin Product for Treatment of Diabetes". U.S. Food and Drug Administration (FDA) (Press release). 28 July 2021. Retrieved 28 July 2021.
  26. ^ </ "Amidated insulin glargine".
  27. ^ "Lilly Diabetes - Index".

External links[edit]