Lifestyle

A Nagging Dry Cough or Swollen Ankles Can Be Side Effects of Blood Pressure Medicine. Signs to Tell Your Doctor

By Mike Harper · November 2, 2026

Feeling a little lightheaded, more tired than usual or puffy around the ankles is easy to chalk up to age. For people who take medicine for high blood pressure, those changes can also be side effects worth raising with a doctor.

Finding the right treatment often takes adjustments. Mayo Clinic says it can take some time to find the best medicine or combination of medicines, and that two or more blood pressure medicines often work better than one. You may need to try several medicines or doses before finding what works best.

That is also why the first rule matters. MedlinePlus says don’t stop taking your medicines without talking to your provider first. Cleveland Clinic warns that stopping ACE inhibitors suddenly can cause a heart attack, stroke or worsening heart failure, and Mayo Clinic says suddenly stopping a beta blocker could raise the risk of a heart attack or other heart problem.

These are signs, drawn from Mayo Clinic, MedlinePlus and Cleveland Clinic, that are worth mentioning at your next visit or sooner.

Dizziness or lightheadedness. Mayo Clinic lists dizziness as a possible side effect of calcium channel blockers, beta blockers and diuretics, and Cleveland Clinic lists it among the most common side effects of ACE inhibitors. MedlinePlus says you may feel dizzy when you start an ACE inhibitor or after a dose increase, and that standing up slowly may help. If you faint, it says to contact your provider right away.

A dry cough that won’t quit. A dry cough is a known side effect of ACE inhibitors. MedlinePlus says it may start after you have been taking the medicine for some time. It advises telling your provider, who may lower the dose or switch you to a different medicine, and not lowering the dose on your own.

Swelling in the feet and lower legs. Mayo Clinic lists this among possible side effects of calcium channel blockers, along with headache, flushing, constipation and a fast heartbeat you can feel.

Unusual tiredness and cold hands or feet. Beta blockers cause the heart to beat more slowly and with less force, Mayo Clinic says. Its list of common side effects of beta blockers includes cold hands or feet, extreme tiredness, weight gain and dizziness.

More trips to the bathroom, or muscle cramps. Diuretics, also called water pills, help the kidneys remove salt and water through the urine. Mayo Clinic says side effects may include urinating more often, too little sodium or potassium in the blood, muscle cramps, dehydration and gout. Cleveland Clinic says providers will want to check that your kidneys are working right and your potassium level is normal.

Swelling of the face, lips, tongue or throat. This one is an emergency. Cleveland Clinic says swelling, especially in the face, mouth or throat, may be a sign of angioedema and needs immediate medical attention, as do hives, itching or trouble swallowing or breathing. MedlinePlus calls a serious allergic reaction to ACE inhibitors very rare, but says to contact your provider right away or go to the emergency room if your tongue or lips swell.

Side effects are not the norm. MedlinePlus says side effects from ACE inhibitors are unusual, and Mayo Clinic calls diuretics generally safe. Mayo Clinic also suggests checking your blood pressure at home, which can help you and your health care team know whether treatment is working. Bringing a log of readings and symptoms can make the conversation easier.

This article is for general information and is not medical advice. Never stop or change a medicine without talking to the provider who prescribed it, and call 911 for swelling of the face, lips, tongue or throat or trouble breathing. This article was produced with the assistance of AI and fact-checked against the sources cited by LightWave Reports.