Understanding Adverse Effects: What Every Older Adult Should Know

By AB Consulting PharmD

Understanding Adverse Effects: What Every Older Adult Should Know

As we age, our bodies process medications differently. This makes older adults more vulnerable to adverse effects—unwanted or unexpected symptoms that may occur after taking a drug. It’s essential to stay informed and vigilant, especially when a new medication is added to your routine.

What Are Adverse Effects?

Adverse effects can range from mild to severe and may include:

  • Dizziness or lightheadedness
  • Confusion or memory changes
  • Fatigue or unusual drowsiness
  • Nausea or changes in appetite
  • Constipation or diarrhea
  • Swelling or unusual weight gain
  • Falls or unsteadiness

👵 Common Functional Challenges in the Elderly

Some OTC options can help — but only if used appropriately:

  1. Dysphagia (difficulty swallowing)
  2. Arthritis limiting ability to open bottles or use inhalers
  3. Cognitive decline interfering with remembering doses
  4. Vision loss making it hard to read labels or instructions
  5. Fatigue or weakness affecting daily self-care routines

These symptoms might seem subtle at first, or you may not link them to your medication. That’s why awareness is key.

Why Are Seniors at Higher Risk?

Pharmacists are an accessible and underutilized resource when it comes to finding medication solutions that fit the patient—not the other way around. Here are ways we help:

  • Polypharmacy: Taking multiple medications increases the risk of drug interactions.
  • Slower metabolism: Aging livers and kidneys may not clear medications as efficiently.
  • Sensitivity: Age-related changes in the brain, heart, and digestion make side effects more likely.

When Starting a New Medication—What to Watch For

Whenever a new medication is added:

  • Monitor your body for any changes, especially in the first few days or weeks.
  • Keep a log of new symptoms and note when they occur.
  • Ask questions: What are the common and serious side effects? How long do they last?

Be Your Own Advocate

You have every right to ask your healthcare provider:

  • “Why am I taking this?”
  • “What are the potential side effects?”
  • “Could this interact with my other medications?”

If something feels off—speak up. You’re not complaining, you’re advocating for your health.

When to Contact Your Prescriber

Contact your doctor or pharmacist if:

  • You feel dizzy, confused, or unsteady on your feet
  • You experience a rash, swelling, or trouble breathing
  • There is a sudden change in mood or alertness Any symptom interferes with your daily life

For severe reactions—don’t wait. Go to the emergency room or call 911.

Tips for the Next Appointment

Contact your doctor or pharmacist if:

  • Bring a list of all medications and supplements
  • Note any changes or concerns in writing
  • Don’t minimize how you’re feeling—your symptoms matter

Final Thought from Your Pharmacist