Health Benefits of Bilberry

What is Bilberry?

Bilberry (Vaccinium myrtillus) is a small, deep-blue fruit native to Europe and closely related in appearance to the North American blueberry. A member of the Ericaceae plant family, bilberry is also known by a variety of traditional names, including blaeberry, whortleberry, myrtle blueberry, winberry, wineberry, fraughan, and huckleberry.

Widely enjoyed across Europe, bilberries are a popular ingredient in classic desserts such as pies, crêpes, tarts, and jams, and can also be eaten fresh or enjoyed as a juice. Beyond their rich flavor, bilberries are valued for their naturally occurring bioactive compounds. They are especially rich in tannins, flavonoids, and anthocyanosides—powerful plant pigments known for their antioxidant properties.

For centuries, both the fruit and leaves of the bilberry plant, whether fresh or dried, have been used in traditional herbal practices. Today, bilberry continues to attract scientific interest for its potential role in supporting overall health and wellness.

What are the Health Benefits of Bilberry?

Bilberry (Vaccinium myrtillus) has long been valued in medical and nutritional science for its anti-inflammatory, antioxidant, collagen-stabilizing, and astringent properties¹. Its rise to prominence dates back to World War II, when anecdotal reports suggested that British Royal Air Force pilots who consumed bilberry experienced enhanced night vision². Although controlled clinical studies have not conclusively confirmed bilberry’s ability to improve night vision , emerging research indicates that bilberry may support retinal health by slowing or inhibiting macular degeneration. These findings suggest potential benefits in the management of glaucoma, cataracts, and other retinal disorders³.

Beyond ocular health, bilberry has been explored for its broader therapeutic potential. Preliminary evidence and traditional use suggest possible applications in supporting metabolic health, cardiovascular function, and vascular integrity, including chronic venous insufficiency and varicose veins. Additional areas of interest include gastrointestinal health, urinary tract support, glycemic control, inflammatory joint conditions, skin health, and overall cellular protection. While further clinical research is warranted, bilberry remains a compelling botanical with a diverse range of potential health-supporting benefits.

Home Remedies Using Bilberry

Eye and Vision Problems

Bilberry (Vaccinium myrtillus) contains anthocyanosides, flavonoid compounds known for their antioxidant and vasoprotective effects. These compounds support retinal health by improving microcirculation and strengthening capillary walls, which are essential for maintaining normal visual function. Reduced blood flow and vascular fragility can contribute to retinal damage and progressive eye disorders. Anthocyanosides have been shown to enhance capillary integrity and connective tissue stability, supporting ocular tissues under conditions of vascular stress. Bilberry has therefore been studied for its supportive role in glaucoma, age-related macular degeneration, and other retinal conditions, particularly those associated with diabetes or hypertension. Traditional use and clinical research suggest that consuming 20–60 grams of fresh bilberries or one standardized bilberry extract daily may help support visual function and overall eye health⁶.

Cardiovascular Health

Bilberry is known for its anti-inflammatory, antioxidant, and vasoprotective activity. Studies show that flavonoids (anthocyanins) in Bilberry may help prevent the oxidation of bad "LDL" cholesterol, which is known to cause atherosclerosis (the build up of plaque in the arteries that can lead to heart attacks or stroke). It can also help improve overall cardiovascular health and Chronic Venous Insufficiency (CVI) by strengthening blood vessels and improving blood circulation in the body ⁴. According to an early study, taking one capsule of Bilberry extract containing about 173mg of anthocyanins daily for one month may help with CVI and other health problems associated with poor blood circulation. Therefore, a simple remedy for overall cardiovascular health is to take one capsule of Bilberry extract daily for about a month or incorporate 20-60 grams of fresh organic Bilberry fruit in the diet each day. Another option is to drink one cup of Bilberry tea each day. A tea can be made by boiling 1-2 tbsp of crushed Bilberries for 5-7 minutes and then straining the tea into a cup before drinking.

Menstrual Problems

The anti-inflammatory properties of Bilberry may help with irregular menstruation, symptoms of PMS and menstrual cramps. Therefore, eating fresh Bilberries and drinking one cup of Bilberry tea daily starting 3 days before the onset of your menstrual cycle until the end of the period (or about 8 days) has shown to help with cramps, nausea, headache, vomiting and other discomforts associated with menstruation.

Weight Loss

According to a recent study, eating 400 grams of fresh Bilberries daily for 5 weeks may help if you're struggling to lose weight ⁵. While 400 grams is a lot of berries, a more reasonable remedy is to incorporate 20-60 grams of Bilberry per day, along with a healthy diet and a good workout routine, in order to maintain a healthy weight.

High Blood Sugar Levels

Bilberry contains antho and tannins which help the body manage blood sugar levels. A recent study suggests that eating fresh Bilberries three times daily along with fatty fish and a diet high in whole grains for three months can help lower high blood sugar levels. Also a research report published in Thrombosis Research suggests that use of Bilberry extract decreased blood sugar between 33%-55% in diabetic rats. While more studies need to be done to assess whether bilberry could replace the use of insulin for diabetics, a natural remedy to regulate blood glucose levels is to eat 20-100 grams of fresh Bilberry or take one capsule of Bilberry extract with 25% or more anthocyanins per day.

Diarrhea and Stomach Problems

Bilberry contains tannins and pectin which helps with diarrhea, upset stomach and irritable bowel movement. The astringent effect of tannins help reduce the inflammation in the intestines and pectin acts as a soluble fibre and forms a thick gel which adds bulk to stool. This gelatinous bulk helps normalize, soothe and slow the painful contractions of the intestines due to diarrhea and other stomach problems. A simple remedy for diarrhea is to eat about 3 tbsp of dried Bilberries once daily for three days. A study suggests that drinking a cup of tea made with one teaspoon of dried Bilberry leaves for 3-4 days may help with diarrhea, bloating, flatulence and soothe upset stomach. The Bilberry leaves also contain pectin which is a soluble fiber and dissolves in water. You should visit your doctor if diarrhea or an upset stomach lasts for longer than three days to rule out any serious conditions.

Sore Throat

Due to the anti-inflammatory activity of Bilberry, you can use it to soothe the discomfort caused by a sore throat. Simply chew on a few dried Bilberries as needed up to four times a day. Gargling with Bilberry tea three to four times daily can also help. To make Bilberry tea, boil 1-2 teaspoons of mashed Bilberries for about five minutes, let it cool to a comfortable temperature, and then use the tea for gargling.

What are the Side Effects of Bilberry?

The dried and fresh Bilberry fruit is considered to be safe when consumed in moderation. Also the consumption of Bilberry extract and Bilberry tea is safe as long as it is used as recommended on the particular package. However, the use of Bilberry in high doses for a long period of time (more than one year) is not recommended. The extract and tea are also not recommended for pregnant or breast feeding women as there is currently a lack of research studying its effects during pregnancy or in infants. If you are currently taking medication for high blood sugar levels, the use of Bilberry extract or tea should be monitored closely by a medical professional since it has anticoagulant activity and can result in hypoglycemia (extremely low glucose levels in the bloodstream). Due to its anticoagulant activity, Bilberry extract or tea should also not be used if you are scheduled for any surgery or if you are taking any blood clot related medication.

How and Where to Buy Bilberry?

Bilberry can be found in fresh or dried form in many grocery or natural food stores. The extract and tea is available in herbal food stores and online. When buying Bilberry extract, select a product which contains at least 25% of anthocyanins ingredient. A few recommendations are presented below.