Blood Pressure Medications for Elderly Parents — A Caregiver's Guide

Your mother has been on blood pressure medication for fifteen years. She could not tell you what it is called without reading the bottle. She knows it is a small white pill she takes every morning. Her doctor checks her blood pressure at annual visits and refills the prescription. That is the extent of the conversation.

This works fine — until it does not. Until she falls getting out of bed because the medication dropped her blood pressure too low. Until the ER doctor asks what she takes and she draws a blank. Until a new specialist adds a second blood pressure drug without realizing she is already at the floor of what is safe for a 79-year-old.

If your parent takes blood pressure medication — and roughly 70% of Americans over 65 do — here is what you need to understand as the person managing their care.

The main types of blood pressure medication

Blood pressure drugs are grouped into classes, each working through a different mechanism. Your parent may take one medication from one class, or two to three from different classes in combination. Understanding the classes helps you understand the side effects and interactions.

ACE inhibitors

Names ending in "-pril": lisinopril, enalapril, ramipril. These are among the most commonly prescribed blood pressure medications for seniors. They work by relaxing blood vessels.

Side effects to watch for: A persistent dry cough is the hallmark side effect — it affects up to 20% of patients. If your parent has developed a chronic cough that started after beginning an ACE inhibitor, tell the doctor. It is not dangerous but it is often misdiagnosed as a respiratory condition. A more serious but rare side effect is angioedema — sudden swelling of the face, lips, or throat. This is a medical emergency.

ARBs

Names ending in "-sartan": losartan, valsartan, irbesartan. These work similarly to ACE inhibitors but without the cough. They are often prescribed when a patient cannot tolerate an ACE inhibitor.

Side effects to watch for: Dizziness when standing, especially in the first few weeks or after a dose increase. Hyperkalemia (high potassium) is a risk, particularly if your parent also takes potassium supplements or certain diuretics.

Calcium channel blockers

Amlodipine, diltiazem, nifedipine. These relax blood vessels by blocking calcium from entering the cells of the heart and blood vessel walls.

Side effects to watch for: Amlodipine commonly causes ankle swelling — not dangerous but uncomfortable and sometimes alarming. Constipation is common with diltiazem and verapamil. Grapefruit juice interacts with several calcium channel blockers, increasing their effect — if your parent drinks grapefruit juice regularly, the doctor needs to know.

Diuretics (water pills)

Hydrochlorothiazide, furosemide (Lasix), spironolactone. These lower blood pressure by reducing blood volume through increased urination.

Side effects to watch for: Dehydration and electrolyte imbalances, particularly low potassium (with hydrochlorothiazide and furosemide) or high potassium (with spironolactone). Frequent urination, especially at night, can disrupt sleep and increase fall risk during nighttime bathroom trips. If your parent is taking a diuretic, it should ideally be taken in the morning — not at bedtime.

Beta blockers

Metoprolol, atenolol, carvedilol. These slow the heart rate and reduce the force of heart contractions.

Side effects to watch for: Fatigue, cold hands and feet, depression, and sexual dysfunction. Beta blockers can also mask the symptoms of low blood sugar — important if your parent also has diabetes. They should never be stopped abruptly, as this can cause rebound high blood pressure and dangerously rapid heart rate.

The fall risk problem

Blood pressure medications reduce blood pressure. That is their job. But in elderly patients, the line between "controlled" and "too low" is narrow — and the consequence of crossing it is a fall.

Orthostatic hypotension — a sudden drop in blood pressure when standing up from a sitting or lying position — is the primary mechanism. The senior feels dizzy, lightheaded, or sees spots. They reach for the wall. If they do not reach it in time, they fall. Hip fractures, head injuries, and hospitalizations follow.

The risk increases when:

• Your parent takes multiple blood pressure medications
• They are also on other medications that lower blood pressure as a side effect (certain antidepressants, prostate medications, Parkinson's drugs)
• They are dehydrated (hot weather, illness, not drinking enough water)
• They stand up quickly after sitting or lying for a prolonged period

Caregiver action: Teach your parent to stand up in stages — sit on the edge of the bed for 30 seconds before standing, hold the nightstand for another 30 seconds before walking. If they experience frequent dizziness, tell the doctor. The blood pressure target may need to be adjusted.

Blood pressure targets for the elderly

There is ongoing medical debate about how aggressively to treat blood pressure in seniors over 75. Lower is not always better. Guidelines have shifted in recent years toward recognizing that overly aggressive treatment in frail elderly patients causes more harm (falls, dizziness, kidney problems) than the modest reduction in stroke risk it provides.

The current general recommendation for most seniors is a systolic target below 130-140 mmHg, but this varies based on the individual patient's overall health, fall risk, and life expectancy. If your parent is frail, has fallen recently, or experiences dizziness, ask the doctor whether the current target is still appropriate.

What you should track

As a caregiver, maintaining a record of your parent's blood pressure readings alongside their medication list gives the doctor data they cannot get from a 15-minute office visit. Home blood pressure monitors are inexpensive and easy to use. Take readings at the same time each day (morning is ideal), record them, and bring the log to every appointment.

The Medication Management Kit includes a daily tracking sheet with space for blood pressure readings, side effect notes, and medication administration records — alongside the master medication list and doctor visit preparation checklist. At $14, it turns scattered observations into organized data that helps doctors make better decisions about your parent's blood pressure management.

Related reading:

• Dangerous Drug Interactions in the Elderly
• Most Common Medications for Elderly Parents
• Polypharmacy in the Elderly — When Too Many Medications Become Dangerous