Dog Rose: Benefits, Dosage, Contraindications

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The Dog Rose is a thorny shrub from the rose family, common in temperate regions of Asia and Europe where it grows in hedges, woodland edges up to 2000 meters of altitude. The Dog Rose is a species of wild rose. Its pink, red, and white flowers bloom from May to July. In autumn, they lead to bright red (false) fruits: these are the rosehips. Dietary supplements are made from rosehips. Fresh rosehip is rich in vitamin C, which is why some people use it as a source of vitamin C to prevent and treat colds, flu, and vitamin C deficiency. However, most of the vitamin C present in rosehip is destroyed during drying and processing. Rosehip also contains flavonoid polyphenols and carotenoids, all contributing to its antioxidant capacity. Several other vitamins and minerals, including vitamin B1, vitamin E, calcium, and zinc, have been identified in rosehip. Besides this already rich composition, and including the achenes, rosehip contains a galactolipid called GOPO (glycoside of diacylglycerol) which plays a key role in the anti-inflammatory action of dog rose. Rosehip is commonly used orally to treat osteoarthritis but also digestive issues (gastritis), infections, colds, and flu-like conditions. In gemmotherapy, the buds are recommended for recurrent infections of the ENT area, on a deficient terrain (demineralized or anemic individuals).

Other name(s) 

Rosehip

Scientific name(s)

Rosa canina

Family or group: 

Plants

Active ingredients:

Vitamin C

Flavonoids

Carotenoids

Vitamin B1

Vitamin E

Calcium


Indications

Rating methodology

EFSA approval.

Several clinical trials (> 2) randomized controlled with double blind, including a significant number of patients (>100) with consistently positive outcomes for the indication.
Several clinical trials (> 2) randomized controlled with double blind, and including a significant number of patients (>100) with positive outcomes for the indication.
One or more randomized studies or multiple cohorts or epidemiological studies with positive outcomes for the indication.
Clinical studies exist but are uncontrolled, with conclusions that may be positive or contradictory.
Lack of clinical studies to date that can demonstrate the indication.


Osteoarthritis
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Dog rose appears to have beneficial effects for treating osteoarthritis, especially knee osteoarthritis. Most clinical research shows that taking an equivalent of 2 g of rosehip powder twice daily for 3-4 months, reduces pain and stiffness, improves function and mobility, in patients with osteoarthritis compared to placebo. A meta-analysis of three randomized controlled trials involving 287 patients with osteoarthritis reported that a 3-month treatment with rosehip powder consistently reduced pain scores compared to placebo. Some studies and a meta-analysis have revealed that rosehip powder is more effective than glucosamine hydrochloride in reducing osteoarthritis pain. This analysis integrated data from three studies on glucosamine, involving 933 patients, and three studies on rosehip, with 287 patients. The ESCOP indicates that rosehip with included achenes is used as an adjunct for the relief of pain and joint stiffness associated with osteoarthritis.

Posologie

posologieOral : rosehips, fruit, buds

posologie4 g

duration4 - months

formulationpowder, gemmotherapy, standardized extract, dry extract


Synergies

A powder made from seeds and shells of a rose-hip subspecies (Rosa canina) reduces symptoms of knee and hip osteoarthritis: a randomized, double-blind, placebo-controlled clinical trial
Rosehip - An evidence based herbal medicine for inflammation and arthritis
A Rosa canina - Urtica dioica - Harpagophytum procumbens/zeyheri Combination Significantly Reduces Gonarthritis Symptoms in a Randomized, Placebo-Controlled Double-Blind Study
A One-year Survey on the Use of a Powder from Rosa canina lito in Acute Exacerbations of Chronic Pain
Does the hip powder of Rosa canina (rosehip) reduce pain in osteoarthritis patients: a meta-analysis of randomized controlled trials
An evidence based herbal medicine for inflammation and arthritis
A herbal remedy, Hyben Vital (stand. powder of a subspecies of Rosa canina fruits), reduces pain and improves general wellbeing in patients with osteoarthritis--a double-blind, placebo-controlled, randomised trial
Comparing different preparations and doses of rosehip powder in patients with osteoarthritis of the knee: An exploratory randomized active-controlled trial
Does the hip powder of Rosa canina (rosehip) reduce pain in osteoarthritis patients? – a meta-analysis of randomized controlled trials
E/S/C/O/P: 2nd Edition of the ESCOP Monographs
Galactolipids as potential health promoting compounds in vegetable foods
The Effects of a Standardized Herbal Remedy Made from a Subtype of Rosa canina in Patients with Osteoarthritis: A Double-Blind, Randomized, Placebo-Controlled Clinical Trial

Rheumatoid Arthritis
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In a 6-month trial with 89 patients affected by rheumatoid arthritis, daily intake of 5 g of rosehip powder showed significant improvement in disability scores as well as a reduction in erythrocyte sedimentation rate (a non-specific indicator of inflammation), compared to a placebo. However, these results, while promising, are modest and require further studies for confirmation. Furthermore, a smaller open study on 20 women with rheumatoid arthritis and 10 controls showed no significant effect on clinical symptoms or biological markers of inflammation after 4 weeks of treatment with 10.5 g/day of rosehip powder.

Posologie

posologieOral : rosehips, fruit

posologie5 g

duration6 - months

formulationpowder, standardized extract, dry extract


Urinary tract infections
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Preliminary clinical research shows that taking rose hip powder 500 mg twice a day starting 2 days post-partum and continuously for 20 days reduces by 68% the chances of contracting a positive culture asymptomatic urinary tract infection compared to placebo in women who have undergone cesarean sections. However, rose hip does not seem to reduce the incidence of symptomatic cystitis in these patients.

Posologie

posologieOral route: rose hips, fruit

posologie1 g

duration20 - days

populationPregnant women

formulationinfusion, aqueous decoction


Lower back pain
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A one-year survey on 152 patients revealed that rose hip relieved pain in patients suffering from acute exacerbations of chronic back pain.

Posologie

posologieOral route: rose hips, fruit

posologie5 g

formulationpowder, standardized extract, dry extract


Synergies


ENT infections
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The buds are used in cases of recurring mucosal inflammations, particularly in children: sore throats, tonsillitis, otitis, bronchitis, sinusitis, tracheobronchitis... ESCOP indicates that rose hip is used as a complement in the treatment of colds and cold-related illnesses. The effectiveness in this indication is plausible based on long-term use. Concentrated gemmotherapytincture: - in adults: 5 to 10 drops in the morning. - in children: 1 drop per 10 kg of weight

Posologie

posologieOral route: rose hips, fruit, buds

posologie5 g

formulationpowder, gemmotherapy, standardized extract, dry extract


Allergic rhinitis
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Buds are traditionally recommended in disorders related to the ENT area, particularly in cases of allergic rhinitis. In gemmotherapy (glycerin macerate) 1DH: 30 drops twice a day.

Posologie

posologieOral route: buds

formulationgemmotherapy


Convalescence
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Traditionally, fruits are used as tonics and stimulants in: - Temporary fatigue, weakness, convalescence - Prevention and treatment of colds, flu, and other infections.

Posologie

posologieOral route: rose hips, fruit, buds

posologie5 g

formulationpowder, gemmotherapy, mother tincture, aqueous decoction


Properties


Antioxidant

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The antioxidant activity of rosehip is attributed to its high content of phenolic compounds, flavonoids, and vitamin C. Even when vitamin C is removed in certain experiments, it still shows significant antioxidant activity. Various in vitro and clinical studies suggest that rosehip has protective effects against oxidative stress, increases the activity of antioxidant enzymes such as superoxide dismutase and catalase, and inhibits lipid peroxidation.

Usages associés

Convalescence

Anti-inflammatory

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Studies indicate that rosehip powder may have anti-inflammatory properties. In the laboratory, it seems to reduce the activity of certain white blood cells (polymorphonuclear leukocytes) and decrease levels of certain inflammatory proteins (C-reactive protein). Interestingly, these effects do not seem linked to the vitamin C present in rosehip. A specific galactolipid found in rosehip, called GOPO, might play a key role in these anti-inflammatory properties. It could help reduce inflammation, as well as levels of C-reactive protein and creatinine. In people with osteoarthritis, this could translate into pain reduction and improved joint mobility. A major advantage of rosehip over usual non-steroidal anti-inflammatory drugs (NSAIDs) is that it does not cause gastric ulcers, does not affect blood clotting or clot formation, making it a safer remedy for individuals at risk of gastrointestinal or cardiovascular problems related to NSAID use.

Usages associés

Osteoarthritis, Rheumatoid arthritis, Lower back pain

Gastroprotective

full-leaffull-leafempty-leafempty-leaf

A decoction of fresh fruits prepared and then tested in vivo in an ulcerogenesis model in rats showed a gastroprotective effect against lesions induced by ethanol. The observed effects were even superior to those of misoprostol (0.4 mg/kg), an anti-ulcer agent used as a reference, especially on epithelial lesions of the stomach.


Hypoglycemic

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Traditionally used in the treatment of diabetes, dog rose has shown beneficial effects in animal studies. In diabetic rats, it helped reduce blood glucose levels. Similarly, in mice given a glucose dose, dog rose helped lower their blood glucose without influencing their appetite, weight gain, or fat accumulation.


Diuretic

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Rosehip contains pectin, citric acid, and malic acid, which may have diuretic activities.

Usages associés

Urinary infections


Safety dosage

Adult from 18 years: 5 g (powder)

A starting dose of about 5 g/day (including achenes) for 3-4 weeks, followed by a maintenance dose of 2.5 g/day, is recommended for treating osteoarthritis or chronic inflammation with the standardized extract. Rose hip should be taken with meals to improve absorption of its lipid elements. Gemmotherapy: 5 drops twice a day in a glass of water. Dilution 1 DH: 50 drops twice a day in a glass of water. 3-week treatment to be renewed.

Child from 5 years: 1 drop/10 kg (gemmotherapy)

Gemmotherapy: 1 drop per 10 kg in a glass of warm water, once a day. In Dilution 1 DH: 20 drops in the morning, in a glass of warm water, or 1 drop per kg of weight per day.


Interactions

Médicaments

Antiplatelet/Anticoagulant drugs: moderate interaction

Evidence from in vitro and animal research suggests that a constituent of rose hip, rugosin E, may induce platelet aggregation. Theoretically, the concurrent use of rose hip could reduce the effectiveness of antiplatelet or anticoagulant drugs. Some antiplatelet or anticoagulant drugs include aspirin, clopidogrel (Plavix), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, ticlopidine (Ticlid), warfarin (Coumadin), and others.

Estrogens: moderate interaction

Theoretically, large amounts of vitamin C, present in rose hip, could increase the absorption and effects of estrogens.

Lithium: moderate interaction

Rose hip may have diuretic properties. Theoretically, because of these potential diuretic effects, rose hip could reduce excretion and increase lithium levels. It may be necessary to decrease the lithium dose.

Plantes ou autres actifs

Rosehip: moderate interaction

The concomitant use of iron and rose hip interacts with vitamin C; 200 mg of vitamin C for 30 mg of elemental iron increases the oral absorption of iron, particularly ferric iron.

Rosehip: moderate interaction

Due to the vitamin C content in rose hip, concomitant use of rose hip with vitamin C supplements could increase the risk of adverse effects associated with vitamin C.


Precautions

Kidney stone: use with caution

Large amounts of vitamin C in rose hip could increase the risk of oxalate stone formation.

Hemochromatosis: use with caution

Use rose hip with caution, as the vitamin C content may increase iron absorption, which could worsen hemochromatosis.

Myocardial infarction: use with caution

A constituent of rose hip, rugosin E, could induce platelet aggregation. Theoretically, taking rose hip could increase the risk of thrombosis in individuals with a history of myocardial infarction.

Pregnant woman: use with caution

There are few publications on the use of rose hip during pregnancy. Rose hip tea is traditionally recommended during pregnancy and there are no reports of adverse effects.

Breastfeeding woman: use with caution

There is insufficient reliable information available on the safety of rose hip.