Nausea, vomiting, loose/oily stools, constipation, stomach upset, gas, bloating, dizziness, or headache may occur. Pain and irritation at the injection site may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly. Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects. Tell your doctor immediately if any of these unlikely but serious side effects occur: signs of gallbladder/liver problems (e.g., fever, stomach/abdominal pain, severe nausea/vomiting, yellowing eyes/skin, unexplained pain in the back/right shoulder), signs of underactive thyroid (e.g., unexplained weight gain, cold intolerance, slow heartbeat, severe constipation, unusual/extreme tiredness, growth/lump/swelling on the front of the neck), worsening heart condition symptoms (e.g., trouble breathing, slow/fast/irregular heartbeat), numbness/tingling of the arms/legs. This medication may infrequently cause changes in blood sugar, especially if you have diabetes. Symptoms of high blood sugar include increased thirst and urination. Symptoms of low blood sugar include nervousness, shakiness, sweating, fast heartbeat, and hunger. Follow your doctor's instructions to treat low blood sugar (e.g., eat a quick source of sugar such as glucose gel/tablets, table sugar, or honey, or drink fruit juice or non-diet soda). Tell your doctor immediately if you experience symptoms of high or low blood sugar while taking this medication. Monitor your blood sugar levels as directed by your doctor. A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing. This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist. In the US - Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.