Buying supplements online is convenient, but it pays to be a little careful. These simple checks can help you avoid poor-quality or misleading products.

1. Watch out for big promises

Food supplements in the UK can't legally claim to treat, cure or prevent any illness. Be cautious if a website promises things like:

  • Fast or "guaranteed" weight loss
  • Results "as strong as" a prescription medicine
  • A cure for a medical condition

Claims like these are a red flag that a product may be unsafe or mislabelled.

2. Check the ingredients and amounts

A trustworthy product lists every active ingredient with its amount per daily serving. If the label is vague, hides amounts in a "proprietary blend", or doesn't show ingredients at all, think twice.

3. Know who you're buying from

  • Look for a clear company name, a UK contact address and an email address
  • Read the seller's delivery, returns and refund policies before you pay
  • Check that the checkout page is secure (the address starts with https)

4. Be careful with "medicine-like" products

Some products sold online contain medicines that should only be available from a pharmacy or with a prescription. The UK medicines regulator, the MHRA, warns people not to buy medicines from unregulated websites. If a product sounds like a medicine, ask your pharmacist.

5. Check whether it's right for you

Before starting any new supplement, speak to a pharmacist or GP if you:

  • Take prescription medicines
  • Are pregnant or breastfeeding
  • Are under 18
  • Have a long-term health condition

If something doesn't feel right

Stop taking the product and speak to a pharmacist or your GP. If you think you've had a side effect from a medicine or herbal remedy, you can report it through the MHRA's Yellow Card scheme.

A good rule of thumb: if it sounds too good to be true, it probably is.