The most common side effect with the use of insulin is low blood sugar (hypoglycaemia).
Low blood sugar may occur if you:
Alcohol and some medicines can also affect your blood sugar levels.
Symptoms of low blood sugar include weakness, dizziness, hunger, sweating, trembling, blurred vision, walking unsteadily or fast heartbeat.
If you experience any of these low blood sugar symptoms, do the following immediately:
Step 1: Check your blood sugar level with a home blood sugar meter (glucometer) if available. If your blood sugar level is less than 4 mmol/L, take 15 grams of sugar such as:
Step 2: You should feel better in about 15 minutes. If you have a home blood sugar meter, you should check your blood sugar level.
Step 3: If your blood sugar level is still less than 4 mmol/L or you still have symptoms of low blood sugar, you should take another 15 grams of sugar.
If your symptoms still do not get better, see a doctor or go to the hospital immediately.
Other side effects
See a doctor or go to the hospital immediately if your blood sugar level is always low and experience symptoms even after taking amounts of sugar as directed by your doctor or nurse (see instructions above for management of low blood sugar.
Inform your doctor if
If your doctor has informed you that you need to do a fasting blood test, do not inject insulin until after you have your blood taken and are ready to eat.
Avoid taking alcohol with this medication.