Side Effects
Common side effects associated with the use of Humalog insulin cartridges include injection site reactions, lipodystrophy, hypoglycemia (low blood sugar), and hypokalemia.
The most common side effect is hypoglycemia which is when blood sugar levels are low. This is common among all insulin medications. If this happens, you may also experience increased heart rate, sweating, tremors, weakness, dizziness, blurred vision, confusion/Trouble concentrating, hunger, headache, nausea, drowsiness, seizures (convulsion), shaking, pale skin, skin rashes, nervousness, anxiety, lightheadedness, pain, swelling, redness at the site of injection.
Injection site reactions are also a common side effect that typically includes itching, swelling, and redness at the injection site. Typically these symptoms go away after a few days or weeks. This can sometimes be due to improper injection techniques or impurities in your cleansing products and not the actual medication.
Hypokalemia has been reported in some patients and can happen when there is a decline in potassium levels in the blood. Symptoms of hypokalemia can include tiredness, constipation, weakness, and leg cramps.
Lipodystrophy is a common complication due to subcutaneous insulin use. It may present itself in two forms: lipohypertrophy (an accumulation of fat around the injection site) or lipoatrophy (a localized loss of fat tissue around the injection site).