This is not a complete list of side effects and others may occur. Low sodium level -headache, confusion, slurred speech, severe weakness, vomiting, loss of coordination, feeling unsteady.Ĭommon side effects of hydrochlorothiazide and metoprolol may include: Low potassium level-leg cramps, constipation, irregular heartbeats, fluttering in your chest, increased thirst or urination, numbness or tingling, muscle weakness or limp feeling or Slow heart rate, weak pulse, fainting, slow breathing (breathing may stop) īlurred vision, tunnel vision, eye pain, or seeing halos around lights Call your doctor at once if you have:īronchospasm (wheezing, chest tightness, trouble breathing) Hydrochlorothiazide and metoprolol may cause serious side effects. Get emergency medical help if you have signs of an allergic reaction: hives difficult breathing swelling of your face, lips, tongue, or throat. Hydrochlorothiazide and metoprolol side effects