Vit B12 Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Vit B12 against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Vit B12 is a dietary supplement by Wholly Liquid with 3 active ingredients. Its ingredients are commonly taken for treating or preventing b12 deficiency, pernicious anemia, low energy and fatigue.Based on those ingredients, 230 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin B6, Vitamin B12. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Vit B12 by Wholly Liquid
Ask about any prescription or over-the-counter medication and we check it for interactions with Vit B12 by Wholly Liquid — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Vit B12 by Wholly Liquid
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
Wholly Liquid Vit B12 contains 3 active ingredients: vitamin B12, vitamin B6, and folate. B12 plays a role in nerve function, red blood cell formation, and DNA synthesis.
B6 is involved in brain development, immune function, and converting food into energy. Folate (a form of vitamin B) also supports cell division and DNA work.
The product comes in liquid form with inactive ingredients including water, vegetable glycerin, citric acid, natural flavor, magnesium, and monk fruit extract.
Does it work?
Strong evidence
Vitamin B12 in this product is effective for treating B12 deficiency itself and for Imerslund-Grasbeck disease (a rare genetic disorder affecting B12 absorption). The data also shows it's likely effective for cyanide poisoning and possibly effective for canker sores and postherpetic neuralgia (nerve pain after shingles).
Vitamin B6 is effective for sideroblastic anemia (a type of blood disorder) and B6 deficiency, and likely effective for high homocysteine levels (a cardiovascular risk factor). It's also possibly effective for pregnancy-related nausea and vomiting.
We don't have effectiveness data on file for folate in this product.
How safe is it?
Well-documented data
Vitamin B12 is generally very well tolerated — your body removes any excess through urine, so there's no established upper limit. It's needed and considered safe during pregnancy and breastfeeding at recommended amounts; follow your provider's guidance.
Vitamin B6 is safe at normal dietary levels and standard supplement doses, but high doses taken over time can damage nerves (sensory neuropathy). It's sometimes used at recommended levels for morning sickness, but only under a doctor's supervision.
Most side effects from B12 are mild (nausea, headache, loss of appetite); serious allergic reactions like rash are rare. High-dose B6 can also cause nausea, headache, and neuropathy.
A rare concern with B12: correcting severe anemia has been linked in case reports to dangerously low potassium levels, though this is uncommon.
Meds to double-check
Moderate interaction found
Before taking this product, check with your pharmacist if you take antihypertensive drugs (blood pressure medications), seizure medications like phenobarbital or phenytoin, amiodarone (a heart rhythm drug), levodopa (for Parkinson's), or metformin (for diabetes). The B6 and B12 in here can interact with these, especially at higher doses or with longer use.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This product is worth considering if you have B12 deficiency or are at risk for one (like if you take metformin long-term). If you take blood pressure medications, seizure medications, amiodarone, or levodopa for Parkinson's, check with your pharmacist first — B6 in this formula may affect how those work.
If you're pregnant or breastfeeding, talk to your provider before starting.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Sep 22, 2022.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Vit B12, straight from the product label.
| Brand | Wholly Liquid |
|---|---|
| Barcode (UPC) | WLVITB157 |
| Net contents | 1 Fluid Ounce(s); 30 mL |
| Market status | On market |
| Date entered into DSLD | Sep 22, 2022 |
| DSLD ID | 272120 |
| Product type | Vitamin |
| Supplement form | Liquid |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), No Allergies, Gluten Free, Dairy Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Vit B12 by Wholly Liquid, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin B12 | 1000 mcg | 16667% |
| Vitamin B6 | 2 mg | 100% |
| Folate | 100 mcg | 25% |
Other ingredients: purified Water, Vegetable Glycerin, Citric Acid, Natural flavor, Magnesium, Monk Fruit extract
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Suggested Use: Shake bottle well before each use. Take 1 spray per day or as directed by your healthcare professional.
Storage
Storage Instructions: Store at room temperature away from direct sunlight. Keep tightly closed. For longer shelf life, refrigerate after opening.
Precautions
Warning: Consult your healthcare professional before use if you are pregnant, nursing, taking medications, have a known medical condition, or for any use by minors.
Warning: Consult your healthcare professional before use if you are pregnant, nursing, taking medications, have a known medical condition, or for any use by minors.
Do not use if safety seal is broken or missing.
Keep out of reach of children.
For nutritional use only.
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Formulation
Made in USA
Increases energy & promotes a healthy nervous system
Soy free Dairy free Sugar free Gluten free
Vegan
Allergen free No artificial colors or sugars No synthetic fillers or binders
Brand IP Statement(s)
Supplements as good as food
FDA Statement of Identity
Dietary Supplement
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Vit B12 by Wholly Liquid label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Vit B12 by Wholly Liquid
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size0.19 mL Dosage formLiquid Servings per container157 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Vitamin B12
Interacts with20 drugs
Vitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very h...
Vitamin B12 monograph & interactionsVitamin B6
Interacts with210 drugs
Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is b...
Vitamin B6 monograph & interactionsFolate
Other (inactive) ingredients: Purified Water, Vegetable Glycerin, Citric Acid, Natural flavor, Magnesium, Monk Fruit extract. These complete the product’s ingredient list but are not active constituents.
Vit B12 by Wholly Liquid Drug Interactions
HelloPharmacist Interaction Report
Wholly Liquid Vit B12 contains three active ingredients, two of which have documented interactions with medications.
Vitamin B12 itself has a minor interaction with metformin (Glucophage), a common diabetes medication — metformin can lower B12 levels over time by interfering with how your digestive system absorbs it, so if you take metformin, periodic B12 monitoring makes sense.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6, the second active ingredient, has more interactions to watch for. It can add to the blood-pressure-lowering effect of antihypertensive drugs (Moderate severity), potentially dropping your pressure too far.
It may also worsen photosensitivity caused by amiodarone (Cordarone), a heart rhythm medication (Moderate). High doses of B6 can reduce the effectiveness of seizure medications like phenobarbital (Luminal) and phenytoin (Dilantin) by speeding up how your liver breaks them down (Moderate).
Finally, B6 can reduce the effect of levodopa (used for Parkinson's), though this doesn't happen if you take it with carbidopa (Minor).
We couldn't check folate — we hold no interaction data for it. Altogether, these interactions span 227 individual medications.
Run your exact prescriptions through the medication checker on this page before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Vit B12?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Vit B12 interact with 230 drugs. Click any drug to see the details.
2 of the 3 ingredients in Vit B12 interact with drugs. Each result below shows which ingredient is responsible. Vitamin B6 Vitamin B12
Belladonna, Ergotamine Tartrate, Phenobarbital
How Belladonna, Ergotamine Tartrate, Phenobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Ergotamine Tartrate, Phenobarbital interactionBelladonna, Ergotamine, PhenobarbitalBellergal-S
How Belladonna, Ergotamine, Phenobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Ergotamine, Phenobarbital interactionBelladonna, PhenobarbitalBellophen, Susano
How Belladonna, Phenobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Phenobarbital interactionBellafoline, PhenobarbitalBelladenal, Belladenal-S
How Bellafoline, Phenobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Bellafoline, Phenobarbital interactionBenazeprilLotensin
How Benazepril interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benazepril interactionBenazepril, HydrochlorothiazideLotensin HCT
How Benazepril, Hydrochlorothiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benazepril, Hydrochlorothiazide interactionBendroflumethiazideAprinox, Naturetin, Neo-NaClex
How Bendroflumethiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide interactionBendroflumethiazide, NadololCorzide
How Bendroflumethiazide, Nadolol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide, Nadolol interactionBendroflumethiazide, Rauwolfia SerpentinaRauzide
How Bendroflumethiazide, Rauwolfia Serpentina interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide, Rauwolfia Serpentina interactionBenzthiazideExna
How Benzthiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benzthiazide interactionBetaxololBetoptic, Kerlone
How Betaxolol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Betaxolol interactionBisoprololZebeta
How Bisoprolol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bisoprolol interactionBisoprolol, HydrochlorothiazideZiac
How Bisoprolol, Hydrochlorothiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bisoprolol, Hydrochlorothiazide interactionBosentanTracleer
How Bosentan interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bosentan interactionBumetanideBurinex
How Bumetanide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bumetanide interactionBumetanide (iv)Bumex
How Bumetanide (iv) interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bumetanide (iv) interactionBumetanide (oral)Bumex
How Bumetanide (oral) interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bumetanide (oral) interactionButabarbital, Phenobarbital, SecobarbitalS.B.P.
How Butabarbital, Phenobarbital, Secobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Butabarbital, Phenobarbital, Secobarbital interactionButalbital, Phenobarbital, SecobarbitalTribarb
How Butalbital, Phenobarbital, Secobarbital interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Butalbital, Phenobarbital, Secobarbital interactionCamphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, ValerianNevrotose #3
How Camphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, Valerian interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Camphor, Hyoscyamine, Passif, Phenobarbital, Scopolamine, Valerian interactionCandesartan CilexetilAmias, Atacand
How Candesartan Cilexetil interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Candesartan Cilexetil interactionCandesartan Cilexetil, HydrochlorothiazideAtacand HCT
How Candesartan Cilexetil, Hydrochlorothiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Candesartan Cilexetil, Hydrochlorothiazide interactionCaptoprilAcepril, Capoten
How Captopril interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Captopril interactionCaptopril, HydrochlorothiazideAcezide, Capozide
How Captopril, Hydrochlorothiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Captopril, Hydrochlorothiazide interactionCarteololCartrol, Ocupress
How Carteolol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Carteolol interactionCarvedilolCoreg, Coreg CR
How Carvedilol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Carvedilol interactionCeliprololCelicard
How Celiprolol interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Celiprolol interactionChlorothiazideDiuril
How Chlorothiazide interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Chlorothiazide interactionChlorothiazide, MethyldopaAldochlor, Aldoclor 150, Aldoclor 250
How Chlorothiazide, Methyldopa interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Chlorothiazide, Methyldopa interactionChlorothiazide, ReserpineDiupres
How Chlorothiazide, Reserpine interacts with Vit B12 — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Chlorothiazide, Reserpine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Vit B12 with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Vitamin B6
Amiodarone (Cordarone)
Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Despite initial case reports suggesting that pyridoxine may have a protective effect against amiodarone-induced photosensitivity, preliminary clinical research suggests that pyridoxine may actually exacerbate this adverse effect.
Antihypertensive Drugs
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Research in hypertensive rats shows that vitamin B6 can decrease systolic blood pressure. Similarly, clinical research in patients with hypertension shows that taking high doses of vitamin B6 may reduce systolic and diastolic blood pressure, possibly by reducing plasma levels of epinephrine and norepinephrine.
Phenobarbital (Luminal)
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenobarbital, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenobarbital to avoid high doses of vitamin B6.
Phenytoin (Dilantin)
High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenytoin, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenytoin to avoid high doses of vitamin B6.
Levodopa
Vitamin B6 may increase the metabolism of levodopa when taken alone, but not when taken in conjunction with carbidopa.
Vitamin B6 (pyridoxine) enhances the metabolism of levodopa, reducing its clinical effects. However, this interaction does not occur when carbidopa is used concurrently with levodopa (Sinemet). Therefore, it is not likely to be a problem in most people.
Vitamin B12
Metformin (Glucophage)
Metformin, a common medication used to manage type 2 diabetes, has been associated with lower vitamin B12 levels in some individuals. Prolonged use of metformin can interfere with the absorption of B12 in the digestive system, potentially leading to a deficiency in this essential vitamin.
Brand information
Manufacturer and brand details for Vit B12, from the product label.
Wholly Liquid
See all Wholly Liquid products- Name
- Wholly Liquid Nutritional Supplements, LLC
- City
- Hampton
- State
- NH
- ZipCode
- 03842
- Web Address
- www.whollyliquid.com
Vit B12 by Wholly Liquid: Common Questions
Does Vit B12 by Wholly Liquid interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Can I take this if I'm on metformin for diabetes?
Is this safe to take every day?
Can I take this while pregnant or breastfeeding?
What does B12 actually do in my body?
What are the most common side effects?
Does this product have fillers?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Vit B12 is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Vit B12’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Vitamin B12
Interacts with 20 drugsVitamin B12 (cobalamin) is an essential nutrient your body needs to make red blood cells, keep nerves healthy, and support DNA. Supplements are very helpful for people who are deficient — su...
Read the full Vitamin B12 monograph → Herb & supplement monographVitamin B6
Interacts with 210 drugsVitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is best known for helping with pregnancy-rel...
Read the full Vitamin B6 monograph →Sources & How We Checked
Vit B12's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 62 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Vitamin B12 30 references
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
- Hartman TJ, Woodson K, Stolzenberg-Solomon R, et al. Association of the B-vitamins pyridoxal 5'-phosphate (B6), B12, and folate with lung cancer risk in older men. Am J Epidemiol 2001;153:688-94.. DOI
- Jansen T, Romiti R, Kreuter A, Altmeyer P. Rosacea fulminans triggered by high-dose vitamins B6 and B12. J Eur Acad Dermatol Venereol 2001;15:484-5..
- Lange H, Suryapranata H, De Luca G, et al. Folate therapy and in-stent restenosis after coronary stenting. N Engl J Med 2004;350:2673-81. PubMed
- Collin, S. M., Metcalfe, C., Refsum, H., Lewis, S. J., Zuccolo, L., Smith, G. D., Chen, L., Harris, R., Davis, M., Marsden, G., Johnston, C., Lane, J. A., Ebbing, M., Bonaa, K. H., Nygard, O., Ueland, P. M., Grau, M. V., Baron, J. A., Donovan, J. L., Nea
- Geissbuhler, P., Mermillod, B., and Rapin, C. H. Elevated serum vitamin B12 levels associated with CRP as a predictive factor of mortality in palliative care cancer patients: a prospective study over five years. J.Pain Symptom.Manage. 2000;20(2):93-103. PubMed
- Salles, N., Herrmann, F., Sakbani, K., Rapin, C. H., and Sieber, C. High vitamin B12 level: a strong predictor of mortality in elderly inpatients. J Am Geriatr.Soc 2005;53(5):917-918.
- Looker, H. C., Fagot-Campagna, A., Gunter, E. W., Pfeiffer, C. M., Sievers, M. L., Bennett, P. H., Nelson, R. G., Hanson, R. L., and Knowler, W. C. Homocysteine and vitamin B(12) concentrations and mortality rates in type 2 diabetes. Diabetes Metab Res R
- Uhl, W., Nolting, A., Golor, G., Rost, K. L., and Kovar, A. Safety of hydroxocobalamin in healthy volunteers in a randomized, placebo-controlled study. Clin Toxicol (Phila) 2006;44 Suppl 1:17-28. PubMed
- Borron, S. W., Baud, F. J., Barriot, P., Imbert, M., and Bismuth, C. Prospective study of hydroxocobalamin for acute cyanide poisoning in smoke inhalation. Ann Emerg.Med 2007;49(6):794-801, 801. PubMed
- Borron, S. W., Baud, F. J., Megarbane, B., and Bismuth, C. Hydroxocobalamin for severe acute cyanide poisoning by ingestion or inhalation. Am J Emerg.Med 2007;25(5):551-558. PubMed
- Lewis, J. G. Gout, Steatorrhoea, and Megaloblastic Anaemia. Ann Rheum.Dis 1962;21(3):284-286. PubMed
- Tal, S., Shavit, Y., Stern, F., and Malnick, S. Association between vitamin B12 levels and mortality in hospitalized older adults. J Am Geriatr.Soc 2010;58(3):523-526. PubMed
- Baztan, J. J., Gavidia, J. J., Gomez-Pavon, J., Esteve, A., and Ruiperez, I. High vitamin B12 levels and in-hospital mortality. J Am Geriatr.Soc 2010;58(11):2237-2238. PubMed
- Omboni, E., Checchini, M., and Longoni, F. [Hypopotassemia and megaloblastic anemia. Presentation of a case]. Minerva Med 8-31-1987;78(16):1255-1257.
- Aalfs As, Scholvinck LH, Horvath B. Acneiform eruption in a 5-year old due to vitamin B12 supplementation. Eur J Dermatol 2013;23(5):726-7. PubMed
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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