Humalog Mix 50/50 Side Effects

Generic name: insulin lispro/insulin lispro protamine

Medically reviewed by Drugs.com. Last updated on Feb 13, 2024.

Note: This document contains side effect information about insulin lispro/insulin lispro protamine. Some dosage forms listed on this page may not apply to the brand name Humalog Mix 50/50.

Applies to insulin lispro/insulin lispro protamine: subcutaneous suspension.

Serious side effects of Humalog Mix 50/50

Along with its needed effects, insulin lispro/insulin lispro protamine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking insulin lispro/insulin lispro protamine:

Incidence not known

Anxiety
blurred vision
chest tightness
chills
cold sweats
confusion
cool, pale skin
cough
decreased urine
depression
difficulty with swallowing
dizziness
dry mouth
fast heartbeat
flushing or redness of the skin
headache
hives, itching, skin rash
increased hunger
increased thirst
irregular heartbeat
loss of appetite
muscle pain or cramps
nausea
nervousness
nightmares
numbness or tingling in the hands, feet, or lips
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
seizures
shakiness
slurred speech
sweating
swelling of the arms or legs
unusual tiredness or weakness
unusually warm skin
vomiting

Other side effects of Humalog Mix 50/50

Some side effects of insulin lispro/insulin lispro protamine may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Incidence not known

Bleeding, blistering, burning, coldness, discoloration of the skin, feeling of pressure, hives, infection, inflammation, itching, lumps, numbness, pain, rash, redness, scarring, soreness, stinging, swelling, tenderness, tingling, ulceration, or warmth at the injection site
redistribution or accumulation of body fat
weight gain

For Healthcare Professionals

Applies to insulin lispro/insulin lispro protamine: subcutaneous suspension.

General

The most common adverse reactions observed with insulin therapy include hypoglycemia, allergic reactions, local injection site reactions, lipodystrophy, rash, and pruritus.^[Ref]

Metabolic

Very common (10% or more): Hypoglycemia^[Ref]

Hypersensitivity

Uncommon (0.1% to 1%): Local reactions such as redness, swelling, or itching at the injection site

Very rare (less than 0.01%): Systemic reactions^[Ref]

Hypersensitivity side effects have included both local and systemic reactions. These reactions are becoming rare (less than 1% of patients) due to the use of biosynthetic human insulin. Local reactions have presented as erythema, swelling, heat, or subcutaneous nodules. They usually occurred within the first two weeks of therapy and then disappear. Systemic allergy is a generalized allergy to insulin which may present as a rash over the whole body, shortness of breath, wheezing, drop in blood pressure, fast pulse, or sweating. Severe cases may be life-threatening.^[Ref]

Cardiovascular

Insulin may cause sodium retention and edema, especially if previously poor metabolic control is improved by intensified insulin therapy.^[Ref]

Frequency not reported: Peripheral edema^[Ref]

Dermatologic

Uncommon (0.1% to 1%): Lipodystrophy

Frequency not reported: Rash, pruritus^[Ref]

Immunologic

Frequency not reported: Anti-insulin antibodies^[Ref]

Other

Weight gain has been attributed to the anabolic effects of insulin and the decrease in glycosuria.^[Ref]

Frequency not reported: Weight gain^[Ref]

Local

Injection site reactions including pain, redness, hives, inflammation, bruising, swelling, and itching, may occur. These reactions are usually transitory and may be related to factors other than insulin, such as irritants in the skin cleansing agent or poor injection technique.^[Ref]

Frequency not reported: Injection site reactions^[Ref]