The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
Type 1 diabetes:
- Flu-like symptoms (35%)
- Sore throat (33%)
- Runny nose (25%)
- Headache (30%)
- Pain (20%)
- Cough (17%)
- Infection (14%)
Type 2 diabetes:
- Headache (12%)
- Pain (11%)
- Infection (10%)
Less Common Side Effects
- Weight gain
- Swelling
- Reactions at the injection site (e.g., redness, swelling, itching)
Humalog serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Severely low blood sugar: dizziness, shakiness, feeling confused, feeling irritable or anxious, feeling faint, sweating, extreme hunger, not able to think clearly
- Ketoacidosis (high ketone levels in the blood): nausea, vomiting, stomach pain, tiredness, thirsty, dry mouth, fruity breath, trouble breathing
- Severely low potassium levels: weakness, muscle cramps or twitches, constipation, abnormal heartbeat, tiredness, trouble breathing
- Severe allergic reactions: rash; hives; swelling of face, tongue, and throat; trouble breathing
Source: DailyMed
More on Humalog side effects
The following Humalog side effects have also been reported
Along with its needed effects, a medicine 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:
More common
Anxious or nervous feeling
behavior change similar to being drunk
blurred vision
chills
cold sweats
confusion or difficulty thinking
dizziness or lightheadedness
drowsiness
excessive hunger
fast heartbeat
headache
irritability or abnormal behavior
lower back or side pain
nightmares
painful or difficult urination
restless sleep
seizures
shakiness
slurred speech
tingling in the hands, feet, lips, or tongue
Less common
Dry, red, hot, or irritated skin
Rare
Depression of the skin at the injection site
dryness of the mouth
fast or weak pulse
itching, redness, or swelling at the injection site
muscle cramps or pain
skin rash or itching over the whole body
sweating
thickening of the skin at the injection site
trouble breathing
unusual tiredness or weakness
vomiting
Incidence not known
Bloating or swelling of the face, arms, hands, lower legs, or feet
decreased urine
difficulty with swallowing
dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position
fast, pounding, or irregular heartbeat or pulse
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
redistribution or accumulation of body fat
tightness in the chest
unusual weight gain or loss
Some side effects 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:
More common
Body aches or pain
congestion
tender, swollen glands in the neck
unusual tiredness or weakness
voice changes
Incidence not known
Redness, swelling, or itching at the injection site
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.
