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Can I take Glucosamine and Vitamin C together?

Guide för läkemedelsinteraktioner

There are no known harmful interactions between glucosamine and vitamin C. In fact, these two substances are often taken together because they both play a role in maintaining healthy joints and connective tissues.

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Varför detta händer

Glucosamine is a building block for cartilage, while vitamin C is essential for the body to produce collagen, the protein that holds joints together. They work through different pathways in the body and do not interfere with how the other is absorbed, broken down, or excreted.

It is generally safe to take glucosamine and vitamin C at the same time. Always follow the dosage instructions on the product packaging and inform your doctor or pharmacist about any supplements you are taking, especially if you have diabetes or are taking blood-thinning medication like warfarin.

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Shellfish allergy

Many glucosamine supplements are derived from the shells of crustaceans. If you have a shellfish allergy, you must check the label for a shellfish-free (vegetarian) version to avoid a serious allergic reaction. Vegan or shellfish-free versions are available.

Astma

Glucosamine may worsen asthma symptoms or cause increased wheezing. If your asthma symptoms become harder to control after starting this supplement, you should stop taking it immediately.

Diabetes

Glucosamine is an amino sugar and may affect your blood glucose levels. You should monitor your blood sugar more closely when starting or changing your dose.

Taking Warfarin (blood thinner)

Glucosamine can significantly increase the blood-thinning effect of warfarin, which increases your risk of serious bleeding. Do not take glucosamine with warfarin unless specifically monitored by your doctor.

Kidney stones (oxalate)

High doses of Vitamin C (typically over 1000mg daily) can increase the amount of oxalate in your urine, significantly raising the risk of developing kidney stones if you are prone to them.

G6PD-brist

If you have glucose-6-phosphate dehydrogenase (G6PD) deficiency, high doses of vitamin C can cause your red blood cells to break down (haemolysis).

Haemochromatosis

Vitamin C increases the absorption of iron from your food. If you have an iron-overload disorder like haemochromatosis, you should avoid high-dose supplements.

Alkohol

It is best to avoid or strictly limit alcohol while using glucosamine. While there is no direct interaction, alcohol can contribute to inflammation or stomach irritation, which may counteract the benefits of the supplement.

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Taking multiple medicines? Our Interaktionskontroll för läkemedel helps you check whether your prescriptions, over-the-counter medicines, and supplements are safe to take together. Simply search for your medicines to see potential interactions and what to do about them.

Ansvarsfriskrivning

Denna information är endast avsedd för allmän utbildning och bör inte användas som en ersättning för professionell medicinsk rådgivning. Rådfråga alltid din läkare, apotekare eller annan kvalificerad vårdpersonal innan du fattar beslut om dina mediciner. Individuella omständigheter kan variera, och endast en vårdpersonal som känner till din medicinska historia kan ge personlig vägledning.

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Artikelhistorik

Informationen på denna sida är skriven och granskad av kvalificerade kliniker.

  • 25 jan 2026 | Ursprungligen publicerad
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