Can I take Folic acid and Glucosamine together?
Drug interaction guide
Originally published 25 Jan 2026
Meets Patient’s editorial guidelines
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There are no known significant interactions between folic acid and glucosamine. It is generally considered safe to take these two supplements together.
Why this happens
Folic acid (a B vitamin) and glucosamine (an amino sugar) are processed by the body through different pathways. They do not compete for absorption in the gut, nor do they interfere with how the liver breaks down or the kidneys remove each substance.
What you should do
You can continue to take both supplements as directed by your healthcare provider or the product packaging. As with any supplement, if you notice any unusual side effects, you should consult your pharmacist or doctor.
Important precautions
Vitamin B12 deficiency (Pernicious Anaemia)
Folic acid can mask the symptoms of vitamin B12 deficiency. If you have B12 deficiency, taking folic acid alone can allow serious nerve damage to progress even though your blood count appears normal. Your doctor must ensure your B12 levels are checked before or during treatment.
Shellfish allergy
Many glucosamine products are derived from the shells of crustaceans. If you have a shellfish allergy, you must check the label for a vegetarian or synthetic version to avoid a potentially severe allergic reaction. Vegan or shellfish-free versions are available.
Diabetes
Glucosamine is an amino sugar and may affect blood glucose levels. If you have diabetes, you should monitor your blood sugar more closely when starting or changing your dose.
Food and drink warnings
Alcohol
It is best to avoid or strictly limit alcohol while taking folic acid. Alcohol interferes with the way your body absorbs and uses folic acid, which can make the treatment less effective. Chronic alcohol consumption is a common cause of folate deficiency.
Using other medicines
Taking multiple medicines? Our Medicines Interaction Checker 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.
Disclaimer
This information is for general educational purposes only and should not be relied upon as a substitute for professional medical advice. Always consult your GP, pharmacist, or another qualified healthcare professional before making decisions about your medications. Individual circumstances may vary, and only a healthcare professional who knows your medical history can provide personalised guidance.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
Article also available in English, German, Spanish, French, Italian, Portuguese, Hindi, Hebrew, Arabic, and Swedish.
25 Jan 2026 | Originally published
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