Possible side effects are disclaimers that lawyer insist are posted to keep the drug companies safe, Some side-effects of some medicines I take:

Anaphylaxis
An irregular heartbeat (arrhythmia)
Autoimmune Disorders
Back pain
Cardiomyopathy and Congestive Heart Failure
Changes in the levels of other salts in the blood
Chest pain
Cold, tingling, or numbness in the hands or feet
Confusion
Cough
Decreased blood potassium level
Decreased kidney function
Decreased Peripheral Blood Counts
Depression and Suicide
Diarrhoea
Difficulty breathing or swallowing.
Dizziness, lightheadedness, or fainting spells
Fatigue
Flu-like Symptoms
Headache
Hepatic Injury and Hepatitis
Hives
Inflammation of the nose or throat (nasopharyngitis)
Inflammation of the sinuses (sinusitis)
Injection Site Necrosis
Itching
Menstruation and Abnormal Bleeding
Nausea
Pain in arm or leg
Psychiatric Disorders
Respiratory tract infections
Seizures
Sudden weight gain
Thyroid
Unexplained rash
Unexplained swelling
Wheezing
Worsening of asthma
Worsening of heart failure

I still take these medicines regularly. I may have "Confusion" and "Psychiatric Disorders" here in QL because of that :P