While minor, some of these side effects may occur. They are as follows; Tiredness, dizziness, lightheadedness, nausea, upset stomach, slow heartbeat, or trouble sleeping may occur. However if any of these persist or worsen, it’s best to speak with your doctor right away.
Tell your doctor right away if you have any serious side effects, including: symptoms of asthma (for example, feelings of tightness in the chest, shortness of breath, cough, wheezing), blue fingers/toes, fainting, very slow heartbeat, new or worsening symptoms of heart failure (such as shortness of breath, swelling ankles/feet, unusual tiredness, unusual/sudden weight gain), mental/mood changes (such as confusion, depression, memory problems), vision changes, symptoms of liver disease (such as dark urine, persistent nausea, vomiting, stomach/abdominal pain, yellowing eyes/skin).
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.