That “% NRV” beside each nutrient is one of the most useful — and most misunderstood — numbers on a supplement label. Here’s what it means and how to actually use it.
NRV stands for Nutrient Reference Value: a labelling benchmark for how much of a vitamin or mineral an average healthy adult needs. It’s the figure used across UK and EU labels, and it replaced the older “RDA” wording you may remember — the idea is essentially the same.
The percentage tells you how much of that reference amount a serving provides. 100% NRV means one serving covers the full reference intake for an average adult. It’s a handy way to compare two products at a glance — provided you’re comparing the same serving size.
Seeing 250% or more isn’t a red flag by itself. The NRV is a general reference, not a maximum or an “optimal” dose. Some nutrients are safe and genuinely useful above 100% (within their upper limits), which is why higher-strength vitamin D, for example, is common. Some ingredients — like collagen — have no NRV at all, because none has been established.
Crucially, the NRV is a population average. Your own needs shift with age, sex, life stage, diet and lifestyle — sun exposure alone changes how much vitamin D you need. Use % NRV to compare and sanity-check, but don’t mistake it for a personalised prescription.
Use % NRV to compare products at a glance, but remember it’s an average reference — not your personal target or a safety ceiling. Some nutrients are safe and useful above 100%; check the upper limit, not just the NRV.
Nutrient Reference Value: a labelling reference for how much of a vitamin or mineral an average healthy adult needs, shown as a percentage per serving.
Often yes, within a nutrient's tolerable upper intake level, but it depends on the nutrient. The NRV is a reference, not a maximum.
They are essentially the same idea. NRV is the current term used on UK and EU labels, replacing the older RDA wording.