8 Supplements Older Adults Should Discuss With a Pharmacist Before Repurchasing

Step into nearly any pharmacy and you’ll see shelves packed with supplements that promise sharper memory, stronger bones, healthier joints, and better heart health. For older adults trying to stay active and independent, those claims can be tempting. But some of those bottles may be doing less than advertised — or even interfering with medications you already take.

The Food and Drug Administration says dietary supplements are not reviewed for safety and effectiveness before they reach the market in the same way prescription drugs are. Some can interact with medications, trigger unwanted side effects, or provide little benefit when there is no clear medical need. Knowing the risks can help protect both health and retirement savings.

Before buying another bottle, it may be worth asking your pharmacist about these eight supplements.

1. Ginkgo Biloba for Memory and Brain Health

Ginkgo biloba is often promoted to older adults as a natural way to improve memory and support brain function. But research has not shown that it prevents dementia or significantly slows cognitive decline in otherwise healthy adults. The National Center for Complementary and Integrative Health says ginkgo may also raise bleeding risk when used with anticoagulants such as warfarin. Anyone taking medication to prevent blood clots could unknowingly add another risk by including a memory supplement in their routine. Before spending money on another bottle, ask whether there is reliable evidence that ginkgo would help in your situation.

2. High-Dose Vitamin E for Healthy Aging

Vitamin E is an essential nutrient, but large supplemental doses are not necessarily better than getting the right amount from food. The NIH Office of Dietary Supplements notes that high-dose vitamin E can increase bleeding risk, especially when taken with anticoagulant or antiplatelet medicines. That matters for older adults who use warfarin, aspirin, or other drugs that affect clotting. Some people also buy vitamin E for claims tied to heart health or memory, even though routine high-dose use is not supported for those purposes. Ask your pharmacist whether your multivitamin already supplies enough vitamin E and whether a separate product offers any real benefit.

3. Calcium Supplements for Stronger Bones

Calcium plays an important role in bone health, especially as osteoporosis becomes more common with age. Still, taking more calcium than the body needs does not automatically make bones stronger and may raise the risk of kidney stones. The NIH Office of Dietary Supplements also says calcium supplements can interfere with the absorption of medications such as levothyroxine and certain antibiotics. For example, someone who takes thyroid medicine each morning may need to separate calcium from the prescription by several hours. Before purchasing another large bottle, ask how much calcium you already get from food and whether supplementation is actually needed.

4. St. John’s Wort for Mood Support

St. John’s wort is an herbal supplement sometimes marketed for depression, emotional well-being, and stress relief. While some research suggests it may help certain people with mild to moderate depression, it also has potentially serious interactions with many prescription drugs. The National Center for Complementary and Integrative Health warns that St. John’s wort can reduce the effectiveness of some heart medicines, antidepressants, cancer treatments, and other drugs. It can also cause dangerous side effects when combined with medications that affect serotonin. Because supplement risks increase when multiple prescriptions are involved, ask your pharmacist to review your full medication list before considering this product.

5. High-Dose Vitamin D Without a Medical Reason

Vitamin D supports bone health and helps the body absorb calcium, which makes it especially important as people get older. But high doses taken without medical guidance can create problems, particularly if you already receive vitamin D through fortified foods or other supplements. According to the NIH Office of Dietary Supplements, too much vitamin D can drive calcium levels dangerously high and may contribute to kidney problems and other complications. The generally accepted upper intake level for adults is 4,000 international units per day, although clinicians may prescribe higher amounts temporarily for specific medical needs. Ask whether your current intake is appropriate, whether testing makes sense, and whether you are paying for a supplement you do not need.

6. Fish Oil Supplements for Heart Protection

Fish oil supplements are widely marketed as an easy way to support cardiovascular health, but the benefits vary depending on the person and the formulation. The National Center for Complementary and Integrative Health says research on omega-3 supplements has produced mixed results when it comes to preventing cardiovascular events in the general population. High doses may also raise the risk of atrial fibrillation in some people, and certain formulations can interact with medicines that affect blood clotting. Anyone taking fish oil along with several heart medications should ask whether the supplement offers proven benefit for their specific condition. Prescription omega-3 drugs used for certain medical purposes should not be confused with typical over-the-counter fish oil capsules.

7. Vitamin B6 for Nerve Health and Energy

Vitamin B6 is needed for normal nerve function and metabolism, but more is not always better. The NIH Office of Dietary Supplements warns that long-term use of excessive supplemental vitamin B6 can cause sensory neuropathy, a form of nerve damage. Symptoms can include tingling, numbness, and trouble coordinating movement, which may be especially concerning for older adults who already struggle with balance. Vitamin B6 can appear in multivitamins, B-complex products, and supplements promoted for energy or nerve support, making accidental overuse possible. Ask your pharmacist to total your daily intake from all sources before buying another product that contains this vitamin.

8. Glucosamine and Chondroitin for Joint Pain

Joint pain can make everyday activities harder, so it is understandable that many older adults try supplements that promise relief. Glucosamine and chondroitin are commonly sold for osteoarthritis, but studies on their effectiveness have been inconsistent. According to the National Center for Complementary and Integrative Health, these supplements may also interact with warfarin and possibly increase bleeding risk. Someone spending $35 a month on joint supplements could end up paying $420 a year without knowing whether the products are actually helping. Before buying another bottle, ask whether there is evidence to support continued use and whether other treatments might work better for your symptoms.

Your Supplement Routine Could Be Costing More Than You Realize

In addition to possible medical concerns, supplement use can quietly create unnecessary costs over time. For example, someone buying four supplements at $25 each every month would spend $100 monthly, or $1,200 a year. If those products duplicate nutrients already covered by food or other vitamins, some of that money may be going toward little or no added benefit. The FDA recommends sharing a complete list of supplements and medications with healthcare professionals so they can spot possible interactions. A pharmacist can help review ingredients, dosages, medication conflicts, and whether any products deserve a closer conversation with a doctor.

A Five-Minute Conversation Could Protect Your Health and Wallet

Dietary supplements are not automatically harmful, and some older adults do benefit from specific vitamins, minerals, or other products when there is a documented need. But taking several supplements without checking their ingredients and interactions can create avoidable health risks and recurring costs. Before buying another bottle, bring your medication and supplement list to the pharmacy and ask whether each product is still appropriate. Never stop prescribed supplements or replace necessary medical treatment without first talking with your healthcare provider. Understanding supplement risks can help you make better decisions, avoid potentially harmful combinations, and spend retirement money on products that truly serve a purpose.