The global supplement market is booming, but quality varies enormously. With limited regulation in many markets, consumers need to be their own advocates. Here's how to separate genuinely effective products from the noise.
Check for third-party testing — Reputable brands submit their products to independent laboratories for verification. Look for certifications like NSF International, USP, or ISO 17025-accredited lab testing on the label or website.
Read the ingredient list carefully — A quality supplement lists every active ingredient with its exact dose. Be wary of 'proprietary blends' that hide individual amounts behind a combined total.
Look at the form of each ingredient — Not all forms are equal. For example, magnesium glycinate is far better absorbed than magnesium oxide. Vitamin D3 (cholecalciferol) is more effective than D2 (ergocalciferol). The best brands use bioavailable forms.
Avoid unnecessary fillers — Some products pad their capsules with artificial colours, titanium dioxide, or excessive binding agents. A clean supplement should have minimal 'other ingredients'.
Check the expiry date and storage instructions — Active ingredients degrade over time. A product without a clear expiry date or with vague storage guidance may not deliver what's on the label.
Research the brand — Does the company have a physical address? Do they publish lab results? Are customer reviews genuine and detailed? Transparency is the hallmark of a brand that stands behind its products.