Can I take Folic acid and Vitamin B2 together?
Drug interaction guide
Originally published 25 Jan 2026
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There is no known harmful interaction between folic acid (Vitamin B9) and Vitamin B2 (riboflavin). In fact, these two vitamins often work together in the body to support healthy blood cells and energy levels.
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Why this happens
Folic acid and Vitamin B2 are both water-soluble B vitamins. They do not interfere with each other's absorption or metabolism. Instead, they have a complementary relationship; Vitamin B2 is actually required to help the body convert folic acid into its active form (methylfolate) so it can be used properly.
What you should do
Back to contentsIt is safe to take these two vitamins together. They are frequently found combined in the same multivitamin or B-complex supplement. No special precautions are needed.
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Important precautions
Back to contentsVitamin 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.
Urine colour change
Vitamin B2 will cause your urine to turn a bright yellow or orange colour. This is harmless and expected.
Food and drink warnings
Back to contentsAlcohol
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.
It is best to avoid or strictly limit alcohol when taking Vitamin B2. Alcohol can interfere with the way your body absorbs this vitamin from the digestive tract, making the supplement less effective.
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Using other medicines
Back to contentsTaking 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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Treatment and medication
Can I take Lisinopril and Potassium together?
Taking lisinopril and potassium supplements together can cause the levels of potassium in your blood to become dangerously high (a condition called hyperkalaemia). While your body needs potassium for your heart and muscles to work, too much of it can lead to serious heart rhythm problems or even cause the heart to stop. Symptoms of high potassium can include muscle weakness, tingling sensations, or palpitations, but often there are no symptoms until the level is very high.
Treatment and medication
Can I take Losartan and Paracetamol together?
There is no known significant interaction between losartan and paracetamol. It is generally considered safe to take these two medications together.
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Article history
The information on this page is written and peer reviewed by qualified clinicians.
25 Jan 2026 | Originally published
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