Dizziness, lightheadedness, or a headache may occur as your body adjusts to the medication. If these side effects worsen or continue to persist, contact your doctor immediately. To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. This product may cause dehydration. Tell your doctor right away if you have any symptoms of dehydration or mineral loss, including extreme thirst, very dry mouth, muscle cramps/weakness, fast/slow/irregular heartbeat, and confusion. In case of any serious side effects like fainting, severe tiredness, joint pain, swelling of hands, feet, and ankles, muscle weakness, slow/irregular heartbeat, fever, persistent sore throat, signs of kidney problems, a decrease in vision or eye pain, consult your doctor immediately.