Trulicity Dilaglutide 1.5mg Injection.

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Dulaglutide, sold under the brand name Trulicity among others,[3] is a medication used for the treatment of type 2 diabetes in combination with diet and exercise.[4][5] It is also approved in the United States for the reduction of major adverse cardiovascular events in adults with type 2 diabetes who have established cardiovascular disease or multiple cardiovascular risk factors.[6] It can be used once weekly.

The most common side effects are nausea, diarrhea, vomiting, abdominal pain, and decreased appetite.[3]

It is a glucagon-like peptide-1 receptor agonist (GLP-1 agonist) consisting of GLP-1(7-37) covalently linked to an Fc fragment of human IgG4. GLP-1 is a hormone that is involved in the normalization of level of glucose in blood (glycemia). The Food and Drug Administration (FDA) approved dulaglutide for use in the United States in September 2014.[3][7] It was approved for use in the European Union in November 2014.[8] In 2017, it was the 232nd most commonly prescribed medication in the United States, with more than two million prescriptions.[9][10]

Medical uses

The compound is indicated for adults with type 2 diabetes mellitus as an adjunct to diet and exercise to improve glycemic control. Dulaglutide is not indicated in the treatment of subjects with type 1 diabetes mellitus or patients with diabetic ketoacidosis because these problems are the result of the islet cells being unable to produce insulin and one of the actions of dulaglutide is to stimulate functioning islet cell to produce more insulin. Dulaglutide can be used either stand-alone or in combination with other medicines for type 2 diabetes, in particular metformin, sulfonylureas, thiazolidinediones, and insulin taken concomitantly with meals.[11][non-primary source needed]

A 2017 meta-analysis did not support the suggestion that treatment with GLP-1 agonists or DPP-4 inhibitors increased all-cause mortality in type 2 diabetics.[12]

Side effects

The most common side effects include gastrointestinal disorders, such as dyspepsia, decreased appetite, nausea, vomiting, abdominal pain, diarrhea.[13] Some patients may experience serious adverse reactions: acute pancreatitis (symptoms include persistent severe abdominal pain, sometimes radiating to the back and accompanied by vomiting), hypoglycemia, renal impairment (which may sometimes require hemodialysis). The risk of hypoglycemia is increased if the drug is used in combination with sulfonylureas or insulin.[14][15] There is also a potential risk of medullary thyroid carcinoma associated with the use of the drug.[16]


The compound is contraindicated in subjects with hypersensitivity to the active ingredient or any of the product’s components.

People with a personal or family history of medullary thyroid cancer (MTC) or affected by multiple endocrine neoplasia type 2 should not take dulaglutide, because it could increase the risk of these cancers.[17][3]

Mechanism of action

Dulaglutide binds to glucagon-like peptide 1 receptors, slowing gastric emptying and increases insulin secretion by pancreatic Beta cells. Simultaneously the compound reduces the elevated glucagon secretion by inhibiting alpha cells of the pancreas, as glucagon is known to be inappropriately elevated in diabetic patients. GLP-1 is normally secreted by L cells of the gastrointestinal mucosa in response to a meal.[18]


The safety and effectiveness of dulaglutide were evaluated in six clinical trials in which 3,342 subjects with type 2 diabetes received dulaglutide. Subjects receiving dulaglutide had an improvement in their blood sugar control as observed with reductions in HbA1c level (hemoglobin A1c is a measure of blood sugar control).[3]

The U.S. Food and Drug Administration (FDA) approved dulaglutide with a Risk Evaluation and Mitigation Strategy (REMS),[3] and granted the approval of Trulicity to Eli Lilly and Company.[3] The REMS consists of a number of steps that Eli Lilly will take to make physicians aware of the risk of pancreatitis and the potential risk of medullary thyroid carcinoma associated with the drug.[16]




  1. Nadkarni P, Chepurny OG, Holz GG (2014). Regulation of glucose homeostasis by GLP-1. Prog Mol Biol Transl Sci. Progress in Molecular Biology and Translational Science. 121. pp. 23–65. doi:10.1016/B978-0-12-800101-1.00002-8. ISBN 9780128001011. PMC 4159612. PMID 24373234.

Further reading