Peter Thnoia, Superintendent Pharmacist at NHS-registered PillTime pharmacy, has highlighted the importance of checking the expiry dates on vitamin and mineral supplements before taking them. Expired vitamins, often forgotten in cupboards, can lose potency and fail to provide the intended health benefits.
“Spring cleaning isn’t just for wardrobes and kitchen cupboards,” Peter explains. “Your medicine cabinet should be included. Many people find bottles of vitamins and supplements that have been sitting unused for years.”
Supplements don’t last indefinitely. Once expired, their effectiveness diminishes, meaning you might not receive the full dosage or benefits you expect. Taking a few minutes to check expiry dates and replace out-of-date products ensures your health routine truly supports your wellbeing.
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Peter emphasizes particular attention to popular vitamins such as:
Vitamin D
“Vitamin D supplements don’t suddenly become harmful past their expiry date, but they gradually lose strength,” Peter says. “This can result in your body receiving less than the intended dose. Since Vitamin D supports bone health, muscle function, and immunity, using expired supplements might leave you underprotected.”
Low vitamin D levels can cause symptoms like fatigue, frequent illness, and general weakness. In children, severe deficiency can lead to rickets, causing soft or misshapen bones and delayed growth. Adults risk osteomalacia, which brings bone pain and muscle weakness. Despite being considered rare, cases in the UK have risen, underscoring the importance of effective Vitamin D supplementation.
Vitamin C
Peter notes, “Vitamin C is sensitive to heat, air, and light, so its potency declines over time. Old supplements may not support the immune system as well as fresh ones.”
Zinc
He adds, “Expired Zinc supplements also lose reliability. Zinc is vital for immune function, skin health, and wound healing, so outdated supplements may reduce these benefits.”
While immediate effects of taking expired supplements might not be obvious, consistently relying on them can lead to long-term health impacts due to insufficient nutrient intake.
Peter recommends these five essential vitamin safety tips:
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Check expiry dates before use, especially for online orders
“Vitamins weaken over time, so always check dates. Don’t hesitate to return products that are expired or near expiry.”
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Store vitamins properly
“Avoid heat, moisture, and sunlight. A cool, dry cupboard is best. Avoid bathrooms due to steam and temperature fluctuations.”
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Don’t mix old and new bottles
“Topping up half-used bottles with fresh tablets makes expiry tracking impossible and increases the risk of taking expired vitamins.”
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Be cautious with gummies and liquids
“These forms contain moisture and expire faster. Old gummies and liquids likely have degraded potency.”
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Consult a pharmacist if unsure
“A pharmacist can help identify which supplements are necessary, eliminate duplicates, and ensure appropriate dosages.”
Peter’s goal isn’t to discourage vitamin use but to encourage a thorough and practical spring clean of medicine cabinets. “Discarding outdated supplements saves money, reduces waste, and maximizes the benefits of the vitamins you take.”