Multi Collagen Unflavored Ingredients & Drug Interactions
by Orgain
What is this page for?
First and foremost: checking Multi Collagen Unflavored 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
Multi Collagen Unflavored is a dietary supplement by Orgain with 8 active ingredients. Its ingredients are commonly taken for replacing fluids and electrolytes, preventing dehydration during exercise or illness, treating low blood sodium (under medical care).Based on those ingredients, 412 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin C, Sodium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Multi Collagen Unflavored by Orgain
Ask about any prescription or over-the-counter medication and we check it for interactions with Multi Collagen Unflavored by Orgain — 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 Multi Collagen Unflavored by Orgain
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
Low disclosure
This powder contains 7 ingredients, 5 of which are active. The main players are collagen peptides from multiple sources — bovine (beef), fish, chicken bone, and eggshell membrane — which your body breaks down and uses to support skin, joints, and connective tissue.
You also get sodium, which plays a role in fluid balance and nerve function, and vitamin C, which aids collagen synthesis and acts as an antioxidant. There are no inactive fillers or binders listed.
Does it work?
Moderate evidence
The collagen peptides in this blend are possibly effective for aging skin and dry skin, based on our data. Vitamin C is effective for preventing vitamin C deficiency and possibly helpful for anemia, atrial fibrillation, cataracts, and exercise-related respiratory infections.
The product doesn't have established evidence for muscle strength — in fact, the data suggests collagen peptides may be ineffective for that. We hold no effectiveness ratings for the eggshell membrane or the sodium content as they relate to collagen supplements.
How safe is it?
Well-documented data
Sodium in this product is generally well tolerated at normal dietary amounts, but too much is linked to high blood pressure and heart strain — the safety data advises against sodium supplements or very high intake without medical guidance. Vitamin C is generally safe at normal doses, though very high intakes can cause stomach cramps, heartburn, diarrhea, nausea, and kidney stones in people prone to them.
Eggshell Membrane Collagen should be avoided if you have an egg allergy. The pregnancy and breastfeeding safety data is limited: sodium is possibly unsafe during pregnancy or breastfeeding, vitamin C is possibly unsafe at high doses in pregnancy and breastfeeding, and eggshell membrane lacks sufficient safety information — talk with your doctor or pharmacist about any of these if you're pregnant or nursing.
Meds to double-check
Moderate interaction found
Check with your pharmacist if you take blood pressure medications (antihypertensives), lithium, warfarin or other blood thinners, oral contraceptives or hormone replacement therapy, thyroid medication (levothyroxine), corticosteroids, or chemotherapy drugs — moderate interactions are documented with sodium or vitamin C. No interactions are documented for the collagen ingredients we could check.
The bottom line
Scorecard at a glanceFormula with limited ingredient disclosure with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This collagen powder may help with skin texture and hydration if you're willing to take it consistently. If you take blood pressure medication, lithium, warfarin, thyroid medication, or oral contraceptives, talk to your pharmacist before adding it — sodium and vitamin C can shift how those work.
Same goes if you take any chemotherapy. Generally well tolerated otherwise, but pregnancy and breastfeeding warrant a conversation with your provider.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 4 of 7 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 22, 2025.
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 Multi Collagen Unflavored, straight from the product label.
| Brand | Orgain |
|---|---|
| Barcode (UPC) | 810167393088 |
| Net contents | 15 Ounce(s); 425 Gram(s) |
| Market status | On market |
| Date entered into DSLD | Aug 22, 2025 |
| DSLD ID | 336389 |
| Product type | Other Combinations |
| Supplement form | Powder |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years), Gluten 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 Multi Collagen Unflavored by Orgain, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories | 80 Calorie(s), 40 Calorie(s) | -- |
| Total Carbohydrates | 0 Gram(s), 0 Gram(s) | -- |
| Sodium | 30 mg, 15 mg | 1%, 1% |
| Added Sugars | 0 Gram(s), 0 Gram(s) | -- |
| Total Sugars | 0 Gram(s), 0 Gram(s) | -- |
| Protein | 18 Gram(s), 9 Gram(s) | -- |
| Eggshell Membrane Collagen | 0 NP, 0 NP | -- |
| Chicken Bone Broth | 0 NP, 0 NP | -- |
| Multi-Collagen Blend | 20 Gram(s), 10 Gram(s) | -- |
| Fish Collagen, Hydrolyzed | 0 NP, 0 NP | -- |
| Vitamin C | 18 mg, 9 mg | 20%, 10% |
| Bovine Collagen, Hydrolysate | 0 NP, 0 NP | -- |
| Chicken Bone Collagen | 0 NP, 0 NP | -- |
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
Cleaner ingredients Powders made from Hair, skin, nail & joint support Type I, II, III, V and X Collagen peptides Excellent source of vitamin C Vitamin C from Amla fruit
The Fab Five When it comes to feeling, moving, and looking your best, why settle for two types of collagen when you can have five instead? Each daily serving offers 20 g collagen peptides from a diverse range of sources to promote hair, skin, nail, and joint health and vitamin C to support collagen production. The scoop: 20 g collagen peptides and vitamin C. Per two scoops (per day serving)
Multi Collagen + excellent source of vitamin C Type I, II, III, V, X Derived from
Formulation
Higher standards
Gluten free No soy ingredients No added sugar Not a low calorie food. See nutrition information for calorie content. No artificial preservatives, flavors or colors
Suggested/Recommended/Usage/Directions
Suggested usage Combine 1 scoop with any 12 fl oz beverage (water, coffee, juice, smoothie). Recommended twice daily. Stir or blend well. This unflavored powder can be mixed into foods or baked goods too!
FDA Statement of Identity
Dietary Supplement
Precautions
Contains: Egg and fish (Alaskan pollock)
Caution: As with any dietary supplement, please consult your healthcare provider before use especially if you are pregnant, nursing, have a medical condition, or are taking medications including other supplements.
Brand IP Statement(s)
Copyright 2025 Orgain, LLC
Storage
Store in a cool and dry place. Contents sold by weight not volume. Settling will occur.
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.
Seals/Symbols
Certified B Corporation
General Statements
Our Commitment to Clean Nutrition Orgain's relentless pursuit of better nutrition that doesn't compromise on taste is based on my belief that real foods can make a real difference. That passion fuels our mission to help people live vibrant lives through good, clean nutrition. In good health, Andrew Andrew Abraham, M.D. Founder, Cancer Survivor & Food Entrepreneur Facebook Instagram Pinterest orgain.com See website for product details. Questions about Orgain products? 888-881-GAIN (4246)
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Multi Collagen Unflavored by Orgain 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 Multi Collagen Unflavored by Orgain
These are the 8 active ingredients this product is made of. Select any to open its full monograph.
Serving size10 Gram(s) Dosage formPowder Servings per container42 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.
Sodium
Interacts with205 drugs
Sodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets g...
Sodium monograph & interactionsProtein
Multi-Collagen Blend
- › Eggshell Membrane Collagen
- › Chicken Bone Broth
- › Fish Collagen, Hydrolyzed
- › Bovine Collagen, Hydrolysate
- › Chicken Bone Collagen
Vitamin C
Interacts with207 drugs
Vitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for im...
Vitamin C monograph & interactionsMulti Collagen Unflavored by Orgain Drug Interactions
HelloPharmacist Interaction Report
Orgain Multi Collagen Unflavored contains sodium and vitamin C, both of which interact with medications.
Sodium is the ingredient with the most serious interactions — it's moderate severity across the board, affecting blood pressure medications, lithium (a mood stabilizer), corticosteroids, and several others. High sodium intake can reduce how well blood pressure drugs work, and it can change lithium levels in ways that risk toxicity.
It also pairs poorly with certain bowel-prep solutions and water-balance medications like tolvaptan.
Read the full breakdown — every affected drug type, severity by severity
Vitamin C carries moderate-severity interactions with blood thinners (warfarin), oral contraceptives and hormone therapy, chemotherapy drugs, and a few others. High-dose vitamin C can weaken warfarin's effect and may increase estrogen levels slightly.
It can also change how well your body absorbs levothyroxine (thyroid medication), so timing matters if you take that.
Eggshell Membrane Collagen, Bovine Collagen, and the collagen blend itself have no documented interactions. We couldn't check Chicken Bone Broth or Fish Collagen — we hold no data for them.
Altogether, these interactions span 410 individual medications. Run your exact prescriptions through the checker on this page before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Multi Collagen Unflavored?
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 Multi Collagen Unflavored interact with 412 drugs. Click any drug to see the details.
2 of the 8 ingredients in Multi Collagen Unflavored interact with drugs. Each result below shows which ingredient is responsible. Vitamin C Sodium
AcebutololRhotral, Sectral
How Acebutolol interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Acebutolol interactionAcetazolamideAk-Zol, Diamox
How Acetazolamide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Acetazolamide interactionAlginic Acid, Aluminum HydroxideRafton
How Alginic Acid, Aluminum Hydroxide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Alginic Acid, Aluminum Hydroxide interactionAliskirenTekturna
How Aliskiren interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Aliskiren interactionAltretamineHexalen
How Altretamine interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAlkylating Agents Moderate
Interaction Summary
Theoretically, antioxidant effects of vitamin C might reduce the effectiveness of alkylating agents.
Read the full Vitamin C + Altretamine interactionAluminum Acetate, Benzethonium ChlorideBuro-Sol Otic Solution
How Aluminum Acetate, Benzethonium Chloride interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum Acetate, Benzethonium Chloride interactionAluminum ChlorideAluminum Chloride, Anhydrol Forte, Driclor, Drysol
How Aluminum Chloride interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum Chloride interactionAluminum HydroxideAlu-Cap, Amphojel, Gaviscon
How Aluminum Hydroxide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum Hydroxide interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAspirin, Aluminum Moderate
Interaction Summary
Acidification of the urine by vitamin C might increase aspirin levels.
Read the full Vitamin C + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAspirin, Aluminum Moderate
Interaction Summary
Acidification of the urine by vitamin C might increase aspirin levels.
Read the full Vitamin C + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAluminum Hydroxide, Magnesium Hydroxide (otc Drug)Maalox, Mucogel
How Aluminum Hydroxide, Magnesium Hydroxide (otc Drug) interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum Hydroxide, Magnesium Hydroxide (otc Drug) interactionAluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug)Mylanta
How Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug) interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum Hydroxide, Magnesium Hydroxide, Simethicone (otc Drug) interactionAluminum, CalciumDomeboro
How Aluminum, Calcium interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum, Calcium interactionAluminum, Magnesium (otc Drug)Almagel
How Aluminum, Magnesium (otc Drug) interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum, Magnesium (otc Drug) interactionAluminum, Magnesium Hydroxide (otc Drug)Wingel
How Aluminum, Magnesium Hydroxide (otc Drug) interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAluminum Moderate
Interaction Summary
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Read the full Vitamin C + Aluminum, Magnesium Hydroxide (otc Drug) interactionAmbrisentanLetairis, Volibris
How Ambrisentan interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Ambrisentan interactionAmilorideAmilamont, Midamor
How Amiloride interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amiloride, Hydrochlorothiazide interactionAmlodipineNorliqva
How Amlodipine interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine interactionAmlodipine BenzoateKaterzia
How Amlodipine Benzoate interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine Benzoate interactionAmlodipine BesilateIstin
How Amlodipine Besilate interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine Besilate interactionAmlodipine BesylateNorvasc
How Amlodipine Besylate interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine Besylate interactionAmlodipine Besylate, BenazeprilLotrel
How Amlodipine Besylate, Benazepril interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine Besylate, Benazepril interactionAmlodipine, CelecoxibConsensi
How Amlodipine, Celecoxib interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Amlodipine, Celecoxib interactionAmmonium ChlorideAmmonium Chloride
How Ammonium Chloride interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Ammonium Chloride interactionAprocitentanTryvio
How Aprocitentan interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Aprocitentan interactionAspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #3
How Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAspirin, Aluminum Moderate
Interaction Summary
Acidification of the urine by vitamin C might increase aspirin levels.
Read the full Vitamin C + Aspirin, Aluminum Hydroxide, Codeine Phosphate, Magnesium Hydroxide interactionAtenololAtenix, Tenormin
How Atenolol interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Atenolol interactionAtenolol, ChlortalidoneAtenixCo, Tenoret 50, Totaretic
How Atenolol, Chlortalidone interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Atenolol, Chlortalidone interactionAtenolol, ChlorthalidoneTenoretic
How Atenolol, Chlorthalidone interacts with Multi Collagen Unflavored — through 1 ingredient. Tap an ingredient for the detail:
SodiumAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
Read the full Sodium + Atenolol, Chlorthalidone interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Multi Collagen Unflavored 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 C
Alkylating Agents
Theoretically, antioxidant effects of vitamin C might reduce the effectiveness of alkylating agents.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs that generate free radicals, such as cyclophosphamide, chlorambucil, carmustine, busulfan, and thiotepa. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effect, if any, antioxidants such as vitamin C have on chemotherapy.
Aluminum
Vitamin C can increase the amount of aluminum absorbed from aluminum compounds.
Research in animals and humans shows that vitamin C increases aluminum absorption, theoretically by chelating aluminum and keeping it in solution where it is available for absorption. In people with normal renal function, urinary excretion of aluminum will likely increase, making aluminum retention and toxicity unlikely. Patients with renal failure who take aluminum-containing compounds such as phosphate binders should avoid vitamin C supplements in doses above the recommended dietary allowances.
Antitumor Antibiotics
Theoretically, the antioxidant effects of vitamin C might reduce the effectiveness of antitumor antibiotics.
The use of antioxidants like vitamin C during chemotherapy is controversial. There is concern that antioxidants could reduce the activity of chemotherapy drugs which generate free radicals, such as doxorubicin. In contrast, some researchers theorize that antioxidants might make chemotherapy more effective by reducing oxidative stress that could interfere with apoptosis (cell death) of cancer cells. More evidence is needed to determine what effects, if any, antioxidants such as vitamin C have on chemotherapy.
Estrogens
Vitamin C might increase blood levels of estrogens.
Increases in plasma estrogen levels of up to 55% occur under some circumstances when vitamin C is taken concurrently with oral contraceptives or hormone replacement therapy, including topical products. It is suggested that vitamin C prevents oxidation of estrogen in the tissues, regenerates oxidized estrogen, and reduces sulfate conjugation of estrogen in the gut wall. When tissue levels of vitamin C are high, these processes are already maximized and supplemental vitamin C does not have any effect on estrogen levels. Increases in plasma estrogen levels may occur when patients who are deficient in vitamin C take supplements. Monitor these patients for estrogen-related side effects.
Fluphenazine (Prolixin)
Theoretically, vitamin C might decrease levels of fluphenazine.
In one patient there was a clinically significant decrease in fluphenazine levels when vitamin C (500 mg twice daily) was started. The mechanism is not known, and there is no further data to confirm this interaction.
Indinavir (Crixivan)
Vitamin C can modestly reduce indinavir levels.
One pharmacokinetic study shows that taking vitamin C 1 gram orally once daily along with indinavir 800 mg orally three times daily reduces the area under the concentration-time curve of indinavir by 14%. The mechanism of this interaction is unknown, but it is unlikely to be clinically significant in most patients. The effect of higher doses of vitamin C on indinavir levels is unknown.
Levothyroxine (Synthroid, Others)
Vitamin C can increase levothyroxine absorption.
Two clinical studies in adults with poorly controlled hypothyroidism show that swallowing levothyroxine with a glass of water containing vitamin C 500-1000 mg in solution reduces thyroid stimulating hormone (TSH) levels and increases thyroxine (T4) levels when compared with taking levothyroxine alone. This suggests that vitamin C increases the oral absorption of levothyroxine, possibly due to a reduction in pH.
Warfarin (Coumadin)
High-dose vitamin C might reduce the levels and effectiveness of warfarin.
Vitamin C in high doses may cause diarrhea and possibly reduce warfarin absorption. There are reports of two people who took up to 16 grams daily of vitamin C and had a reduction in prothrombin time. Lower doses of 5-10 grams daily can also reduce warfarin absorption. In many cases, this does not seem to be clinically significant. However, a case of warfarin resistance has been reported for a patient who took vitamin C 500 mg twice daily. Cessation of vitamin C supplementation resulted in a rapid increase in international normalized ratio (INR). Tell patients taking warfarin to avoid taking vitamin C in excessively high doses (greater than 10 grams daily). Lower doses may be safe, but the anticoagulation activity of warfarin should be monitored. Patients who are stabilized on warfarin while taking vitamin C should avoid adjusting vitamin C dosage to prevent the possibility of warfarin resistance.
Acetaminophen (Tylenol, Others)
High-dose vitamin C might slightly prolong the clearance of acetaminophen.
A small pharmacokinetic study in healthy volunteers shows that taking high-dose vitamin C (3 grams) 1.5 hours after taking acetaminophen 1 gram slightly increases the apparent half-life of acetaminophen from around 2.3 hours to 3.1 hours. Ascorbic acid competitively inhibits sulfate conjugation of acetaminophen. However, to compensate, elimination of acetaminophen glucuronide and unconjugated acetaminophen increases. This effect is not likely to be clinically significant.
Aspirin
Acidification of the urine by vitamin C might increase aspirin levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction is not clinically significant.
Choline Magnesium Trisalicylate (Trilisate)
Acidification of the urine by vitamin C might increase choline magnesium trisalicylate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams daily of vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Niacin
Vitamin C might decrease the beneficial effects of niacin on high-density lipoprotein (HDL) cholesterol levels.
A combination of niacin and simvastatin (Zocor) effectively raises HDL cholesterol levels in patients with coronary disease and low HDL levels. Clinical research shows that taking a combination of antioxidants (vitamin C, vitamin E, beta-carotene, and selenium) along with niacin and simvastatin (Zocor) attenuates this rise in HDL, specifically the HDL-2 and apolipoprotein A1 fractions, by more than 50% in patients with coronary disease. It is not known whether this adverse effect is due to a single antioxidant such as vitamin C, or to the combination. It also is not known whether it will occur in other patient populations.
Salsalate (Disalcid)
Acidification of the urine by vitamin C might increase salsalate levels.
It has been suggested that acidification of the urine by vitamin C could increase reabsorption of salicylates by the renal tubules, and increase plasma salicylate levels. However, short-term use of up to 6 grams/day vitamin C does not seem to affect urinary pH or salicylate excretion, suggesting this interaction probably is not clinically significant.
Sodium
Antihypertensive Drugs
Theoretically, a high intake of dietary sodium might reduce the effectiveness of antihypertensive drugs.
High intake of dietary sodium can increase systolic and diastolic blood pressure. Also, high intake of sodium may necessitate increased use of antihypertensive medications to achieve blood pressure control in some patients, such as those with chronic kidney disease.
Corticosteroids
Concomitant use of mineralocorticoids and some glucocorticoids with sodium supplements might increase the risk of hypernatremia.
Mineralocorticoids and some glucocorticoids (corticosteroids) cause sodium retention. This effect is dose-related and depends on mineralocorticoid potency. It is most common with hydrocortisone, cortisone, and fludrocortisone, followed by prednisone and prednisolone.
Didanosine (Videx)
Concomitant use of didanosine with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia.
Didanosine formulations contain a significant amount of sodium.
Lithium
Altering dietary intake of sodium might alter the levels and clinical effects of lithium.
High sodium intake can reduce plasma concentrations of lithium by increasing lithium excretion. Reducing sodium intake can significantly increase plasma concentrations of lithium and cause lithium toxicity in patients being treated with lithium carbonate. Stabilizing sodium intake is shown to reduce the percentage of patients with lithium level fluctuations above 0.8 mEq/L. Patients taking lithium should avoid significant alterations in their dietary intake of sodium.
Sodium Phosphates
Theoretically, concomitant use of sodium phosphate with sodium supplements might increase the risk of hypernatremia.
Use of high doses (> 45 mL in 24 hours) of sodium phosphate, such as those used for bowel cleansing before surgery, can lead to serious electrolyte disturbances, including hypernatremia. The risk of hypernatremia is highest in the elderly and people with other risk factors for electrolyte disturbances.
Sodium-Containing Drugs
Concomitant use of sodium-containing drugs with additional sodium from dietary or supplemental sources may increase the risk of hypernatremia and long-term sodium-related complications.
The Chronic Disease Risk Reduction (CDRR) intake level of 2.3 grams of sodium daily indicates the intake at which it is believed that chronic disease risk increases for the apparently healthy population. Some medications contain high quantities of sodium. When used in conjunction with sodium supplements or high-sodium diets, the CDRR may be exceeded. Additionally, concomitant use may increase the risk for hypernatremia; this risk is highest in the elderly and people with other risk factors for electrolyte disturbances.
Tolvaptan (Samsca)
Theoretically, concomitant use of tolvaptan with sodium might increase the risk of hypernatremia.
Tolvaptan is a vasopressin receptor 2 antagonist that is used to increase sodium levels in patients with hyponatremia. Patients taking tolvaptan should use caution with the use of sodium salts such as sodium chloride.
Brand information
Manufacturer and brand details for Multi Collagen Unflavored, from the product label.
Orgain
See all Orgain products- Name
- Orgain, LLC
- Street Address
- P.O. Box 4918
- City
- Irvine
- State
- CA
- ZipCode
- 92616
- Phone Number
- 888-881-4246
Multi Collagen Unflavored by Orgain: Common Questions
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The Full Monographs Behind Multi Collagen Unflavored’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sodium
Interacts with 205 drugsSodium is an essential mineral and electrolyte your body needs to balance fluids, support nerves, and help muscles work. Most people in modern diets get more than enough—often too much—from...
Read the full Sodium monograph → Herb & supplement monographEggshell Membrane
Eggshell membrane is a natural source of collagen, hyaluronic acid, and other connective-tissue compounds that is marketed mainly for joint comfort and osteoarthritis. Some small studies sug...
Read the full Eggshell Membrane monograph → Herb & supplement monographCollagen Peptides
Collagen peptides are a well-absorbed form of protein that may modestly improve skin elasticity and joint comfort for some people, though evidence is still developing and results vary. They...
Read the full Collagen Peptides monograph → Herb & supplement monographVitamin C
Interacts with 207 drugsVitamin C (ascorbic acid) is an essential nutrient your body needs but cannot make, so you must get it from food or supplements. It's important for immune function, collagen, and acts as an...
Read the full Vitamin C monograph →Sources & How We Checked
Multi Collagen Unflavored'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 94 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.
Sodium 38 references
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- Zhou TL, Schütten MTJ, Kroon AA, et al. Urinary Sodium Excretion and Salt Intake Are Not Associated With Blood Pressure Variability in a White General Population. J Am Heart Assoc 2023;12(1):e026578. PubMed
Eggshell Membrane 3 references
Vitamin C 51 references
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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