Metabolic Complex Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Metabolic Complex 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
Metabolic Complex is a dietary supplement by MBi Nutraceuticals with 8 active ingredients. Its ingredients are commonly taken for general nutrition and energy, skin and hair health, acne (topical and oral).Based on those ingredients, 1,035 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Kelp, Pyridoxine Hydrochloride, Thiamine Hydrochloride. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Metabolic Complex by MBi Nutraceuticals
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HelloPharmacist Scorecard of Metabolic Complex by MBi Nutraceuticals
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
Metabolic Complex contains 8 ingredients, of which we can identify the active ones: pantothenic acid (a B vitamin), pyridoxine hydrochloride (vitamin B6), thiamine hydrochloride (vitamin B1), and kelp (a seaweed high in iodine). The product also includes adrenal tissue, spleen tissue, bovine thyroid tissue, and thymus tissue — animal-derived substances meant to support metabolic function, though limited clinical evidence backs their use.
Inactive ingredients listed are calcium phosphate, herbal base, rice flour extract, and silica — typical binders and fillers.
Does it work?
Not established
Pantothenic acid is effective for pantothenic acid deficiency and rated possibly ineffective for radiation dermatitis; evidence is insufficient to rate it for hay fever or other conditions listed. Vitamin B6 is effective for sideroblastic anemia and B6 deficiency, likely effective for high homocysteine levels, and possibly effective for pregnancy-related nausea and vomiting.
Thiamine is effective for thiamine deficiency and Wernicke-Korsakoff syndrome (a serious brain condition from severe thiamine lack) and possibly effective for menstrual pain; it's rated possibly ineffective as a mosquito repellent and for heart failure. Kelp's effectiveness for aging skin, heart disease, constipation, diarrhea, and indigestion is not established in the data we hold.
How safe is it?
Well-documented data
Pantothenic acid is generally well tolerated at typical supplement doses; the main oral side effect is diarrhea. Vitamin B6 is safe at doses under 100 mg daily, but high doses or prolonged use can damage nerves (sensory neuropathy).
Common side effects at normal doses are headache, nausea, and loss of appetite. Thiamine is very safe by mouth in normal amounts and rarely causes allergic reactions; injectable forms are also generally well tolerated.
Kelp poses the biggest safety concern: its high iodine content can cause goiter, overactive thyroid (hyperthyroidism), or underactive thyroid (hypothyroidism), and the plant may concentrate heavy metals from seawater. The adverse_effects data notes one case of a heart rhythm problem (prolonged QT interval and dangerous arrhythmia) in someone taking a kelp-containing weight-loss supplement, though it's unclear if kelp alone was responsible.
Meds to double-check
Moderate interaction found
Check before taking if you use antithyroid drugs, thyroid hormone (levothyroxine), lithium, amiodarone, or blood pressure medications — kelp's iodine and vitamin B6 can interfere. Also double-check if you take seizure drugs like phenytoin or phenobarbital, since high-dose B6 may reduce their effectiveness, or if you're on levodopa alone (not Sinemet).
If you take trimethoprim, thiamine levels may rise. No interactions are documented for the animal tissue ingredients we were unable to check.
The bottom line
Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.
This product may help if you have a documented B vitamin deficiency, but its real-world effectiveness for broader metabolic support isn't established. If you take any thyroid medication, lithium, blood pressure drugs, seizure medication, amiodarone, or levodopa alone, you'll need to check with your doctor or pharmacist before starting — the interactions are real and could change how your drugs work.
Talk it over with your own healthcare provider before adding this to your routine.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 4 of 8 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2020.
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 Metabolic Complex, straight from the product label.
| Brand | MBi Nutraceuticals |
|---|---|
| Barcode (UPC) | 358301178172 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Aug 23, 2020 |
| DSLD ID | 231641 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
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 Metabolic Complex by MBi Nutraceuticals, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Pantothenic Acid | 10 mg | 100% |
| Pyridoxine Hydrochloride | 10 mg | 500% |
| Adrenal Tissue | 25 mg | -- |
| Thiamine Hydrochloride | 2 mg | 133% |
| Spleen Tissue | 15 mg | -- |
| Bovine Thyroid Tissue | 60 mg | -- |
| Thymus Tissue | 15 mg | -- |
| Kelp | 300 mg | -- |
Other ingredients: Calcium Phosphate, Herbal Base, Rice Flour extract, Silica
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.
Formula
Metabolic Complex promotes healthy metabolic function with glandulars, vitamins, and Atlantic Kelp. This natural combination increase the metabolic rate and stimulates the thyroid gland.
Suggested/Recommended/Usage/Directions
Recommendation: One to two capsules daily following meals or as directed by your health care professional.
Precautions
Warning: Keep out of the reach of children.
If tamper resistant seals are broken do not use this product.
Formulation
Optimal support for metabolic function
FDA Statement of Identity
Dietary Supplement
General Statements
Bringing balance back to life
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Metabolic Complex by MBi Nutraceuticals 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 Metabolic Complex by MBi Nutraceuticals
These are the 8 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container60 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.
Pantothenic Acid
No knowninteractions
Pantothenic acid is vitamin B5, an essential nutrient your body uses to turn food into energy. True deficiency is very rare because it is found in nea...
Pantothenic Acid monograph & interactionsPyridoxine Hydrochloride
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...
Pyridoxine Hydrochloride monograph & interactionsAdrenal Tissue
Thiamine Hydrochloride
Interacts with3 drugs
Thiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get eno...
Thiamine Hydrochloride monograph & interactionsSpleen Tissue
Bovine Thyroid Tissue
Thymus Tissue
Kelp
Interacts with891 drugs
Fucus vesiculosus (bladderwrack) is a brown seaweed rich in iodine that has been used traditionally for thyroid concerns, weight, and skin. There is l...
Kelp monograph & interactionsOther (inactive) ingredients: Calcium Phosphate, Herbal Base, Rice Flour extract, Silica. These complete the product’s ingredient list but are not active constituents.
Metabolic Complex by MBi Nutraceuticals Drug Interactions
HelloPharmacist Interaction Report
Metabolic Complex by MBi Nutraceuticals interacts with medications through its vitamin B6, thiamine, and kelp content.
The most serious interactions are Moderate-severity concerns with antithyroid drugs, lithium, thyroid hormone replacements, and amiodarone — all tied to kelp's high iodine content, which can disrupt how your thyroid works and how these medications function.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6 carries Moderate interactions with blood pressure drugs (may lower pressure further), amiodarone (may worsen light sensitivity), and seizure medications like phenytoin and phenobarbital (high doses may reduce their effectiveness). It also has a Minor interaction with levodopa when taken alone, though not with the combination product Sinemet.
Thiamine has one Minor interaction documented: trimethoprim may raise thiamine blood levels.
Kelp's iodine also theoretically affects how your body metabolizes certain drugs processed by the liver (CYP2D6, CYP2C9, and CYP3A4 substrates), though these are Minor interactions not yet reported in humans. There is also a Minor theoretical concern with blood thinners and antiplatelet drugs.
We could not check adrenal tissue, spleen tissue, bovine thyroid tissue, and thymus tissue — no interaction data is on file for these ingredients.
Altogether, these interactions span 1,036 individual medications. Use the medication checker below with your exact drugs before starting this product, and talk with your doctor or pharmacist if you take any thyroid, heart, blood pressure, or seizure medication.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Metabolic Complex?
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 Metabolic Complex interact with 1,035 drugs. Click any drug to see the details.
3 of the 8 ingredients in Metabolic Complex interact with drugs. Each result below shows which ingredient is responsible. Kelp Pyridoxine Hydrochloride Thiamine Hydrochloride
Chlorothiazide, ReserpineDiupres
How Chlorothiazide, Reserpine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Chlorothiazide, Reserpine interactionChlorthalidoneHygroton, Thalitone
How Chlorthalidone interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Chlorthalidone interactionChlorthalidone, ClonidineClorpres, Combipres
How Chlorthalidone, Clonidine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Chlorthalidone, Clonidine interactionCilazaprilInhibace
How Cilazapril interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Cilazapril interactionClevidipineCleviprex
How Clevidipine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Clevidipine interactionClonidineCatapres
How Clonidine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Clonidine interactionConjugated EstrogensCenestin, Enjuvia, Premarin, Premarin Vaginal Cream
How Conjugated Estrogens interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
KelpCytochrome P450 3a4 (cyp3a4) Substrates, Thyroid Hormone Moderate
Interaction Summary
Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
Read the full Kelp + Conjugated Estrogens interactionCryptenamine, MethyclothiazideDiutensen
How Cryptenamine, Methyclothiazide interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Cryptenamine, Methyclothiazide interactionCyclothiazideAnhydron, Fluidil
How Cyclothiazide interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Cyclothiazide interactionDehydrocholic Acid, Homatropine Methylbromide, PhenobarbitalG.B.S.
How Dehydrocholic Acid, Homatropine Methylbromide, Phenobarbital interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Dehydrocholic Acid, Homatropine Methylbromide, Phenobarbital interactionDeserpidineHarmonyl
How Deserpidine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Deserpidine interactionDeserpidine, HydrochlorothiazideOreticyl, Oreticyl Forte
How Deserpidine, Hydrochlorothiazide interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Deserpidine, Hydrochlorothiazide interactionDeserpidine, MethyclothiazideEnduronyl, Enduronyl Forte
How Deserpidine, Methyclothiazide interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Deserpidine, Methyclothiazide interactionDesiccated Thyroid ExtractWesthroid, WP Thyroid
How Desiccated Thyroid Extract interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
KelpThyroid Hormone Moderate
Interaction Summary
Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.
Read the full Kelp + Desiccated Thyroid Extract interactionDesiccated Thyroid Extract (prescription Drug)Nature-Throid, Thyrar
How Desiccated Thyroid Extract (prescription Drug) interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
KelpThyroid Hormone Moderate
Interaction Summary
Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.
Read the full Kelp + Desiccated Thyroid Extract (prescription Drug) interactionDextrothyroxineCholoxin
How Dextrothyroxine interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
KelpThyroid Hormone Moderate
Interaction Summary
Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.
Read the full Kelp + Dextrothyroxine interactionDicyclomine, PhenobarbitalBentyl w/ Pb
How Dicyclomine, Phenobarbital interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Dicyclomine, Phenobarbital interactionDiltiazemAdizem-SR, Adizem-XL, Angitil SR, Angitil XL, Calcicard CR, Cardizem +23 more
How Diltiazem interacts with Metabolic Complex — through 2 ingredients. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Diltiazem interactionKelpCytochrome P450 3a4 (cyp3a4) Substrates Minor
Interaction Summary
Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
Read the full Kelp + Diltiazem interactionDiltiazem, EnalaprilTeczem
How Diltiazem, Enalapril interacts with Metabolic Complex — through 2 ingredients. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Diltiazem, Enalapril interactionKelpCytochrome P450 3a4 (cyp3a4) Substrates Minor
Interaction Summary
Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
Read the full Kelp + Diltiazem, Enalapril interactionDoxazosin MesylateCardura
How Doxazosin Mesylate interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Doxazosin Mesylate interactionDyphylline, Ephedrine, Guaifenesin, PhenobarbitalLufyllin-EPG
How Dyphylline, Ephedrine, Guaifenesin, Phenobarbital interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Dyphylline, Ephedrine, Guaifenesin, Phenobarbital interactionEnalapril MaleateEpaned, Vasotec
How Enalapril Maleate interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Enalapril Maleate interactionEnalapril Maleate, FelodipineLexxel
How Enalapril Maleate, Felodipine interacts with Metabolic Complex — through 2 ingredients. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Enalapril Maleate, Felodipine interactionKelpCytochrome P450 3a4 (cyp3a4) Substrates Minor
Interaction Summary
Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
Read the full Kelp + Enalapril Maleate, Felodipine interactionEnalapril Maleate, HydrochlorothiazideVaseretic
How Enalapril Maleate, Hydrochlorothiazide interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Enalapril Maleate, Hydrochlorothiazide interactionEphedrine, Guaifenesin, Phenobarbital, TheophyllineMudrane GG
How Ephedrine, Guaifenesin, Phenobarbital, Theophylline interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Ephedrine, Guaifenesin, Phenobarbital, Theophylline interactionEphedrine, Phenobarbital, Potassium Iodide, TheophyllineMudrane, Quadrinal
How Ephedrine, Phenobarbital, Potassium Iodide, Theophylline interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Ephedrine, Phenobarbital, Potassium Iodide, Theophylline interactionEphedrine, Phenobarbital, TheophyllineTedral
How Ephedrine, Phenobarbital, Theophylline interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochloridePhenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Pyridoxine Hydrochloride + Ephedrine, Phenobarbital, Theophylline interactionEplerenoneInspra
How Eplerenone interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Eplerenone interactionEpoprostenolFlolan
How Epoprostenol interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Epoprostenol interactionEprosartanTeveten
How Eprosartan interacts with Metabolic Complex — through 1 ingredient. Tap an ingredient for the detail:
Pyridoxine HydrochlorideAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Pyridoxine Hydrochloride + Eprosartan interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Metabolic Complex 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.
Kelp
Amiodarone (Cordarone)
Theoretically, combining Fucus vesiculosus with amiodarone might cause excessively high iodine levels.
Fucus vesiculosus contains high concentrations of iodine. Amiodarone contains 37.3% iodine and can increase iodine levels. Concomitant use might increase the risk of having excessive iodine levels and adversely affecting thyroid function. Monitor thyroid function.
Antithyroid Drugs
Due to its iodine content, Fucus vesiculosus might alter the effects of antithyroid drugs.
Fucus vesiculosus contains high concentrations of iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using antithyroid drugs could alter the effects of the antithyroid drugs.
Lithium
Concomitant use of Fucus vesiculosus and lithium has resulted in hyperthyroidism.
There is a case of hyperthyroidism occurring in a patient taking Fucus vesiculosus and lithium. Monitor thyroid hormones closely in patients taking lithium and Fucus vesiculosus concomitantly.
Thyroid Hormone
Due to its iodine content, Fucus vesiculosus might alter the effects of thyroid hormone.
Fucus vesiculosus contains high concentrations of iodine. Iodine in high doses has been reported to cause both hyperthyroidism and hypothyroidism, depending on the individual's past medical history. Taking Fucus vesiculosus while using thyroid hormone could alter the effects of thyroid hormone.
Anticoagulant/Antiplatelet Drugs
Theoretically, taking Fucus vesiculosus with antiplatelet or anticoagulant drugs might increase the risk of bruising and bleeding.
In vitro evidence suggests that a constituent of Fucus vesiculosus, known as fucoidan, has anticoagulant effects. However, in clinical research, fucoidan does not seem to have significant anticoagulant activity when taken orally, possibly due to poor absorption.
Cytochrome P450 2C8 (Cyp2C8) Substrates
Theoretically, concomitant use of Fucus vesiculosus with CYP2C8 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C8. This interaction has not been reported in humans.
Cytochrome P450 2C9 (Cyp2C9) Substrates
Theoretically, concomitant use of Fucus vesiculosus with CYP2C9 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP2C9. This interaction has not been reported in humans.
Cytochrome P450 2D6 (Cyp2D6) Substrates
Theoretically, concomitant use of Fucus vesiculosus with CYP2D6 substrates might alter the effects of these substrates.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, both inhibits and induces CYP2D6. This interaction has not been reported in humans.
Cytochrome P450 3A4 (Cyp3A4) Substrates
Theoretically, concomitant use of Fucus vesiculosus with CYP3A4 substrates might increase the risk for adverse effects.
In vitro research shows that fucoidan, a constituent of Fucus vesiculosus, inhibits CYP3A4. This interaction has not been reported in humans.
Pyridoxine Hydrochloride
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.
Thiamine Hydrochloride
Trimethoprim (Proloprim)
Trimethoprim might increase blood levels of thiamine.
In vitro, animal, and clinical research suggest that trimethoprim inhibits intestinal thiamine transporter ThTR-2, hepatic transporter OCT1, and renal transporters OCT2, MATE1, and MATE2, resulting in paradoxically increased thiamine plasma concentrations.
Brand information
Manufacturer and brand details for Metabolic Complex, from the product label.
MBi Nutraceuticals
See all MBi Nutraceuticals products- Name
- MBi Nutraceuticals
- Street Address
- 211 N 1800 W
- City
- Lindon
- State
- UT
- ZipCode
- 84042
- Phone Number
- 801-796-8742
Metabolic Complex by MBi Nutraceuticals: Common Questions
Does Metabolic Complex by MBi Nutraceuticals 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 pregnant?
Can I take this while breastfeeding?
What does pantothenic acid do?
Is this product safe if I take nothing else?
Why does this product contain animal tissues like adrenal and thymus?
Will this help me lose weight or boost my metabolism?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind Metabolic Complex’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Pantothenic Acid
Pantothenic acid is vitamin B5, an essential nutrient your body uses to turn food into energy. True deficiency is very rare because it is found in nearly all foods, and most people meet thei...
Read the full Pantothenic Acid 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 → Herb & supplement monographThiamine
Interacts with 3 drugsThiamine (vitamin B1) is an essential nutrient your body needs to turn food into energy and to keep your nerves and heart healthy. Most people get enough from food, but supplements are clear...
Read the full Thiamine monograph → Herb & supplement monographFucus Vesiculosus
Interacts with 891 drugsFucus vesiculosus (bladderwrack) is a brown seaweed rich in iodine that has been used traditionally for thyroid concerns, weight, and skin. There is little solid human evidence to support mo...
Read the full Fucus Vesiculosus monograph →Sources & How We Checked
Metabolic Complex'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 65 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.
Pantothenic Acid 11 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
- Schmuth, M., Wimmer, M. A., Hofer, S., Sztankay, A., Weinlich, G., Linder, D. M., Elias, P. M., Fritsch, P. O., and Fritsch, E. Topical corticosteroid therapy for acute radiation dermatitis: a prospective, randomized, double-blind study. Br.J.Dermatol. 2 PubMed
- Schreck, U., Paulsen, F., Bamberg, M., and Budach, W. Intraindividual comparison of two different skin care conceptions in patients undergoing radiotherapy of the head-and-neck region. Creme or powder? Strahlenther.Onkol. 2002;178(6):321-329. PubMed
- Herbst, R. A., Uter, W., Pirker, C., Geier, J., and Frosch, P. J. Allergic and non-allergic periorbital dermatitis: patch test results of the Information Network of the Departments of Dermatology during a 5-year period. Contact Dermatitis 2004;51(1):13-1 PubMed
- Champault, G. and Patel, J. C. [Treatment of constipation with Bepanthene]. Med.Chir Dig. 1977;6(1):57-59.
- Scott LN, Fiume M, Bergfeld WF, et al. Safety Assessment of Panthenol, Pantothenic Acid, and Derivatives as Used in Cosmetics. Int J Toxicol 2022;41(3_suppl):77-128. PubMed
- Han J, Warshaw EM. Allergic Contact Dermatitis to Panthenol in "Hypoallergenic" Products. Dermatitis 2023;34(1):62-63. PubMed
- Blanchard G, Kerre S, Walker A, et al. Allergic contact dermatitis from pantolactone and dexpanthenol in wound healing creams. Contact Dermatitis 2022;87(5):468-471. PubMed
- Peltier E, Trapp S, de Salvo R, et al. A new dexpanthenol-containing liquid cleanser for atopic-prone skin: Results from two prospective clinical studies evaluating cutaneous tolerability, moisturization potential, and effects on barrier function. J Cosme PubMed
Vitamin B6 32 references
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- Geerling BJ, Dagnelie PC, Badart-Smook A, et al. Diet as a risk factor for the development of ulcerative colitis. Am J Gastroenterol 2000;95:1008-13. PubMed
- South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
- 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
- Baxter P, Aicardi J. Neonatal seizures after pyridoxine use. Lancet 1999;354:2082-3. PubMed
- Bendich A, Cohen M. Vitamin B6 safety issues. Ann N Y Acad Sci 1990;585:321-30.
- Schaumburg H, Kaplan J, Windebank A. Sensory neuropathy from pyridoxine abuse. A new megavitamin syndrome. N Engl J Med 1983;309:445-8. PubMed
- Gordon N. Pyridoxine dependency: an update. Dev Med Child Neurol 1997;39:63-5. PubMed
- Lewis PJ. Pain in the hand and wrist. Pyridoxine supplements may help patients with carpal tunnel syndrome. BMJ 1995;310:1534. PubMed
- Kaufman G. Pyridoxine against amiodarone-induced photosensitivity (letter). Lancet 1984;1:51-2. PubMed
- Mulrow JP, Mulrow CD, McKenna WJ. Pyridoxine and amiodarone-induced photosensitivity. Ann Intern Med 1985;103:68-9. PubMed
- Kawada A, Kashima A, Shiraishi H, et al. Pyridoxine-induced photosensitivity and hypophosphatasia. Dermatology 2000;201:356-60.. PubMed
- Vasile A, Goldberg R, Kornberg B. Pyridoxine toxicity: report of a case. J Am Osteopath Assoc 1984;83:790-1. DOI
- Hansson O, Sillanpaa M. Pyridoxine and serum concentration of phenytoin and phenobarbitone. Lancet 1976;1:256. 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..
- Chittumma P, Kaewkiattikun K, Wiriyasiriwach B. Comparison of the effectiveness of ginger and vitamin B6 for treatment of nausea and vomiting in early pregnancy: a randomized double-blind controlled trial. J Med Assoc Thai 2007;90:15-20.
- Hatzitolios, A., Iliadis, F., Katsiki, N., and Baltatzi, M. Is the anti-hypertensive effect of dietary supplements via aldehydes reduction evidence based? A systematic review. Clin Exp.Hypertens. 2008;30(7):628-639. PubMed
- Vasdev, S., Ford, C. A., Parai, S., Longerich, L., and Gadag, V. Dietary vitamin B6 supplementation attenuates hypertension in spontaneously hypertensive rats. Mol.Cell Biochem. 1999;200(1-2):155-162.
- de, Vogel S., Dindore, V., van, Engeland M., Goldbohm, R. A., van den Brandt, P. A., and Weijenberg, M. P. Dietary folate, methionine, riboflavin, and vitamin B-6 and risk of sporadic colorectal cancer. J Nutr 2008;138(12):2372-2378. PubMed
- Hagen, I., Nesheim, B. I., and Tuntland, T. No effect of vitamin B-6 against premenstrual tension. A controlled clinical study. Acta Obstet.Gynecol.Scand. 1985;64(8):667-670. PubMed
- Aybak, M., Sermet, A., Ayyildiz, M. O., and Karakilcik, A. Z. Effect of oral pyridoxine hydrochloride supplementation on arterial blood pressure in patients with essential hypertension. Arzneimittelforschung. 1995;45(12):1271-1273.
- Lal, K. J., Dakshinamurti, K., and Thliveris, J. The effect of vitamin B6 on the systolic blood pressure of rats in various animal models of hypertension. J Hypertens. 1996;14(3):355-363. PubMed
- Lauritzen CH, Reuter HD, Repges R, Bohnert K, and Schmidt U. Treatment of premenstrual tension syndrome with Vitex agnus castus. Controlled, double-blind study versus pyridoxine. Phytomed 1997;4(3):183-189. PubMed
- Fonseca VA, Lavery LA, Thethi TK, et al. Metanx in type 2 diabetes with peripheral neuropathy: A randomized trial. Am J Med 2013;126(2):141-9. PubMed
- Hankey GJ, Eikelboom JW, Yi Q, et al. Treatment with B vitamins and incidence of cancer in patients with previous stroke or transient ischemic attack: Results of a randomized placebo-controlled trial. Stroke 2012;43(6):1572-7. PubMed
- Hoyer-Kuhn H, Kohbrok S, Volland R, Franklin J, Hero B, Beck BB, Hoppe B. Vitamin B6 in primary hyperoxaluria I: first prospective trial after 40 years of practice. Clin J Am Soc Nephrol. 2014 Mar;9(3):468-77. PubMed
- Mahmoud A, Tabassum S, Al Enazi S, et al. Amelioration of levetiracetam-induced behavioral side effects by pyridoxine. A randomized double blind controlled study. Pediatr Neurol 2021;119:15-21. PubMed
- Gupta M, Gallante B, Bamberger JN, et al. Prospective randomized evaluation of idiopathic hyperoxaluria treatments. J Endourol 2021;35(12):1844-1851. PubMed
- Li H, Chen M, Liang S, et al. Excessive vitamin B6 during treatment is related to poor prognosis of patients with nasopharyngeal carcinoma: A U-shaped distribution suggests low dose supplement. Clin Nutr 2021;40(4):2293-2300. PubMed
- Tanigawa J, Nabatame S, Tominaga K, et al. High-dose pyridoxine treatment for inherited glycosylphosphatidylinositol deficiency. Brain Dev 2021;43(6):680-687. PubMed
- Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 189: Nausea And Vomiting Of Pregnancy. Obstet Gynecol. 2018;131(1):e15-e30. PubMed
Thiamine 7 references
- McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
- Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
- 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
- Rogovik, A. L., Vohra, S., and Goldman, R. D. Safety considerations and potential interactions of vitamins: should vitamins be considered drugs? Ann.Pharmacother. 2010;44(2):311-324. PubMed
- Arruti N, Bernedo N, Audicana MT, Villarreal O, Uriel O, Muñoz D. Systemic allergic dermatitis caused by thiamine after iontophoresis. Contact Dermatitis. 2013 Dec;69(6):375-6. PubMed
- Thiamine hydrochloride injection package insert. Lake Zurich, IL: Fresenius Kabi, LLC; September 2019.
- Vora B, Wen A, Yee SW, et al. The Effect of Trimethoprim on Thiamine Absorption: A Transporter-Mediated Drug-Nutrient Interaction. Clin Pharmacol Ther 2023;114(2):381-392.
Fucus Vesiculosus 15 references
- Goodman GA, Rall TW, Nies AS, Taylor P. The Pharmacological Basis of Therapeutics, 9th ed.
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Phaneuf D, Cote I, Dumas P, et al. Evaluation of the contamination of marine algae (Seaweed) from the St. Lawrence River and likely to be consumed by humans. Environ Res 1999;80:S175-S182. PubMed
- Durig J, Bruhn T, Zurborn KH, et al. Anticoagulant fucoidan fractions from Fucus vesiculosus induce platelet activation in vitro. Thromb Res 1997;85:479-91. PubMed
- Conz PA, La Greca G, Benedetti P, et al. Fucus vesiculosus: a nephrotoxic alga? Nephrol Dial Transplant 1998;13:526-7.
- Ohye H, Fukata S, Kanoh M, et al. Thyrotoxicosis caused by weight-reducing herbal medicines. Arch Intern Med 2005;165:831-4. PubMed
- Okamura K, Inoue K, Omae T. A case of Hashimoto's thyroiditis with thyroid immunological abnormality manifested after habitual ingestion of seaweed. Acta Endocrinol (Copenh) 1978;88:703-12. PubMed
- Agarwal SC, Crook JR, Pepper CB. Herbal remedies -- how safe are they? A case report of polymorphic ventricular tachycardia/ventricular fibrillation induced by herbal medication used for obesity. Int J Cardiol 2006;106:260-1. PubMed
- Sterling JB, Heymann WR. Potassium iodide in dermatology: a 19th century drug for the 21st century-uses, pharmacology, adverse effects, and contraindications. J Am Acad Dermatol 2000;43:691-7. PubMed
- Catania, M. A., Oteri, A., Caiello, P., Russo, A., Salvo, F., Giustini, E. S., Caputi, A. P., and Polimeni, G. Hemorrhagic cystitis induced by an herbal mixture. South.Med.J. 2010;103(1):90-92. PubMed
- Cumashi, A., Ushakova, N. A., Preobrazhenskaya, M. E., D'Incecco, A., Piccoli, A., Totani, L., Tinari, N., Morozevich, G. E., Berman, A. E., Bilan, M. I., Usov, A. I., Ustyuzhanina, N. E., Grachev, A. A., Sanderson, C. J., Kelly, M., Rabinovich, G. A., I
- Irhimeh, M. R., Fitton, J. H., and Lowenthal, R. M. Pilot clinical study to evaluate the anticoagulant activity of fucoidan. Blood Coagul.Fibrinolysis 2009;20(7):607-610. PubMed
- Arbaizar, B. and Llorca, J. [Fucus vesiculosus induced hyperthyroidism in a patient undergoing concomitant treatment with lithium]. Actas Esp.Psiquiatr. 2011;39(6):401-403.
- Church FC, Meade JB, Treanor RE, and et al. Antithrombin activity of fucoidan. The interaction of fucoidan with heparin cofactor II, antithrombin III, and thrombin. J Biol Chem 2-25-1989;264(6):3618-3623. DOI
- Mathew L, Burney M, Gaikwad A, et al. Preclinical evaluation of safety of fucoidan extracts from Undaria pinnatifida and Fucus vesiculosus for use in cancer treatment. Integr Cancer Ther 2017;16(4):572-84.
Parts of this content are provided by the Therapeutic Research Center, LLC.
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.
© 2021 Therapeutic Research Center, LLC