Bilberry

Vaccinium myrtillus · the dark European berry, weighed rather than waved at

All articles checked for accuracy against the GB NHC Register and all sources have citations with verified links to their relevant studies.

Small, dark and deeply purple, bilberry (Vaccinium myrtillus) is a different wild berry to the cultivated blueberry. Its colour comes from a specific family of pigments that is the focus of both analysis and standardisation in supplements.

This article explains what bilberry is, what makes its colour chemically distinctive, how WellsparQ measures and declares bilberry in products, and what the human research actually shows — described plainly and with its limits.

Ingredient Snapshot

What it is

A small, dark European wild berry rich in purple plant pigments.

Where from

Vaccinium myrtillus — wild bilberry from heaths and moorland.

Known for

A natural source of anthocyanins (pigmented flavonoids), variable by region and season.

In WellsparQ

• BrightSight ComplexBilberry Fruit — 550 mg (equivalent from extract)
• Lipo Vit CBilberry Fruit — 500 mg

Bilberry is the small, dark European cousin of the blueberry — Vaccinium myrtillus, a low shrub of heaths, moorland and open woodland across northern and central Europe ^¹. Unlike the cultivated blueberry, which is pale inside, the bilberry is stained deep purple all the way through: flesh, juice and all. That colour is the point of the plant, chemically speaking, and it is the reason bilberry is measured the way WellsparQ measures it — by the milligram, and by the pigment content that milligram provides.

The berry and its pigments

The colour comes from anthocyanins, a family of water-soluble plant pigments in the flavonoid group. Bilberry is one of the richer natural sources. Analytical surveys describe bilberry fruit as containing around fifteen different anthocyanin glycosides, built from five pigment cores — the anthocyanidins delphinidin, cyanidin, petunidin, peonidin and malvidin — each attached to sugars such as glucose, galactose or arabinose ^². Delphinidin- and cyanidin-based pigments usually dominate, together making up more than half of the total, though the exact profile shifts with region, altitude and sunlight ^².

This is where a chemistry distinction earns its keep. Anthocyanins are the pigments as they occur in the fruit — pigment core plus sugar. Anthocyanidins are the sugar-free cores alone. Standardised extracts are often specified by their anthocyanidin content, because it is a stable, comparable way to say how much active pigment is present regardless of which sugars are attached ^².

Total anthocyanin content in wild bilberries is high but variable — analytical studies report figures spanning several hundred milligrams per 100 g of fresh fruit, rising with altitude and UV exposure ^². This natural variability is exactly why a supplement is standardised: to state a repeatable pigment amount rather than a vague "berry" quantity.

How WellsparQ weighs it

Bilberry appears in the WellsparQ range as a declared fruit weight, and — where relevant — with the pigment content that weight is standardised to deliver. It is presented as a measured botanical addition, not a headline actor.

Source: WellsparQ Supplements Database. The "equivalent from extract" note in BrightSight Complex means the 550 mg figure is expressed as whole-fruit equivalent, with the actual material a concentrated extract — the same honest bookkeeping WellsparQ uses across its botanicals. As a fruit-derived botanical, bilberry is generally suitable for vegetarians and vegans; specific suitability follows each product record.

The vision research — read as evidence, with its limits

No account of bilberry is complete without the folklore, and the folklore needs handling with care. A popular story holds that RAF pilots in the Second World War ate bilberry jam to sharpen their night vision. It is a good story with no solid documentary basis, and it should be treated as legend, not evidence.

The pigments do have properties of genuine research interest. Anthocyanins are studied as antioxidants, and laboratory work has examined bilberry anthocyanins in retinal cell models ^³. But laboratory and mechanistic interest is not the same as a demonstrated effect in people. The most useful summary of the human trials is a systematic review by Canter and Ernst (2004), published in Survey of Ophthalmology. They identified thirty relevant trials, of which twelve were placebo-controlled. Crucially, the four most recent and most rigorous randomised controlled trials were all negative, while the positive results came from weaker, non-randomised studies. Their conclusion was plain: the idea that bilberry anthocyanosides improve normal night vision is not supported by the rigorous evidence ^⁴.

Two things follow. First, the honest reading of the best human evidence is not supportive for night vision in healthy people — this is one of the clearer negative literatures in the botanical field. Second, that is a finding about the published research, reported here as research; it is not a WellsparQ claim, in either direction, about eyesight^⁵⁶.

Traditional and culinary place

Bilberry has a long European heritage as food and folk remedy — eaten fresh, cooked into jams, tarts and cordials, and used traditionally in herbal preparations of the fruit and leaf ^¹. This is cultural and historical background, stated as heritage rather than as evidence of any effect.

In short

Bilberry is a real, distinctive plant with a genuinely interesting pigment chemistry — fifteen anthocyanins, five anthocyanidin cores, and a colour that runs right through the fruit. WellsparQ's contribution is to weigh it properly and declare its pigment content. The vision literature, honestly read, does not support the popular eyesight story in healthy people, and this page says so plainly rather than trading on the myth.