Any injection or infusion which is given directly into a vein. [1] The medical abbreviation for it is "IV." Insulin is given in this way when someone has a diabetic emergency, as it is the way to get the short-acting soluble insulin working at the most rapid rate. [2][3] Using insulin in this manner brings with it a high risk of hypoglycemia once blood glucose levels begin returning to normal. Careful professional monitoring is necessary; this makes it a hospital or ER procedure for both people and pets.

Cloudy insulins must never be injected intravenously.[4] The subcategories below show which insulins can be used intravenously and which cannot.


  1. Intravenous Route--Explanation & Photos. Washington State University.
  2. Gordon, Jana (2008). Insulin therapy: Past, present and future (Proceedings). DVM 360.
  3. Absorption of Neutral Insulin.
  4. Maddison, Jill E.,Page, Stephen W.,Church, David B. (2008). Small Animal Clinical Pharmacology. Saunders Ltd..

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