May 23, 2017
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Humalog 75-25

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Humalog 75-25

HUMALOG® Mix75/25™
(75% insulin lispro protamine) Suspension and (25% insulin lispro) Injection, (rDNA origin) 100 Units per ML (U-100)


Humalog® Mix75/25™ [75% insulin lispro protamine suspension and 25% insulin lispro injection, (rDNA origin)] is a mixture of insulin lispro solution, a rapid-acting blood glucose-lowering agent and insulin lispro protamine suspension, an intermediate-acting blood glucose-lowering agent. Chemically, insulin lispro is Lys(B28), Pro(B29) human insulin analog, created when the amino acids at positions 28 and 29 on the insulin B-chain are reversed. Insulin lispro is synthesized in a special non-pathogenic laboratory strain of Escherichia coli bacteria that has been genetically altered to produce insulin lispro. Insulin lispro protamine suspension (NPL component) is a suspension of crystals produced from combining insulin lispro and protamine sulfate under appropriate conditions for crystal formation.

Insulin lispro has the following primary structure:

Humalog® Mix75/25™ [insulin lispro protamine] Structural Formula Illustration

Insulin lispro has the empirical formula C257H383N65O77S6 and a molecular weight of 5808, both identical to that of human insulin.

Humalog Mix75/25 vials and Pens contain a sterile suspension of insulin lispro protamine suspension mixed with soluble insulin lispro for use as an injection.

Each milliliter of Humalog Mix75/25 injection contains insulin lispro 100 units, 0.28 mg protamine sulfate, 16 mg glycerin, 3.78 mg dibasic sodium phosphate, 1.76 mg Metacresol, zinc oxide content adjusted to provide 0.025 mg zinc ion, 0.715 mg phenol, and Water for Injection. Humalog Mix75/25 has a pH of 7.0 to 7.8. Hydrochloric acid 10% and/or sodium hydroxide 10% may have been added to adjust pH.

What are the precautions when taking 75-25 insulin lispro suspension and 25 insulin lispro injection (Humalog 75-25)?

Before taking this medication, tell your doctor or pharmacist if you are allergic to it; or to other insulins; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease, liver disease.

Use only the insulin product that your doctor has prescribed for you. Do not change the insulin you use unless your doctor has given you instructions on how to do so. Follow your doctor's instructions carefully. Following a change in insulin, you may need a dosage change. Know the symptoms of low blood sugar and high blood sugar (see Side Effects section). Tell...

Read All Potential Precautions of Humalog 75-25 »

Last reviewed on RxList: 3/26/2013
This monograph has been modified to include the generic and brand name in many instances.

Humalog 75-25 - User Reviews

Humalog 75-25 User Reviews

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