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Humulin 70/30 Side Effects

Although many people do not experience any problems while using Humulin 70/30, it is possible for side effects to occur. Potential side effects of all insulins include low blood sugar, a skin reaction at the injection site, and skin thickening or pitting at the injection site. Some side effects of Humulin 70/30 are potentially serious and require immediate medical attention, such as blurry vision, fever, and itching or hives.

An Introduction to Humulin 70/30 Side Effects

As with any medicine, side effects are possible with Humulin® 70/30 (NPH insulin/regular insulin). However, not everyone who takes the drug will have problems. While some of the side effects of Humulin 70/30 are relatively minor, some side effects are very dangerous.
(This article covers many, but not all, of the possible side effects with Humulin 70/30. Your healthcare provider can discuss a more complete list of Humulin 70/30 side effects with you.)

Possible Side Effects

Possible side effects of all insulins, including Humulin 70/30, include:
  • Skin thickening or pitting at the site of the injection
  • A skin reaction at the site of the injection (such as redness, itching, or a temporary lump)
  • Low blood sugar levels (hypoglycemia).

Serious Side Effects of Humulin 70/30

Some side effects with Humulin 70/30 are potentially serious and should be reported immediately to your healthcare provider. Some of the warning signs of these serious side effects include:
  • Symptoms of diabetic ketoacidosis (DKA), caused by prolonged high blood sugar (if your dose is too low):


    • Increased thirst and urination
    • Nausea and vomiting
    • Labored breathing
    • Fruity, sweet-smelling breath
    • Fever
    • Confusion
    • Unconsciousness


  • Symptoms of dangerously low blood sugar, such as:


    • Extreme hunger
    • Blurry vision
    • Dizziness
    • Shakiness
    • Changes in behavior, such as irritability or mood swings
    • Loss of coordination
    • Cold sweats
    • Difficulty speaking
    • Sweating
    • Confusion
    • Seizures
    • Unconsciousness


  • Signs of an allergic reaction, such as:


    • Hives
    • Itching
    • An unexplained rash
    • Swelling of the mouth or throat
    • Wheezing or other difficulty breathing.


Be sure those around you (such as relatives, friends, and coworkers) know how to recognize your particular signs of low blood sugar, since you may be too confused or disoriented (due to low blood sugar) to recognize and adequately respond to low blood sugar. Different people may have different signs of low blood sugar. Also, make sure you and those around you know exactly how to respond to low blood sugar.
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Humulin 70/30 Insulin Information

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