Multi Collagen Protein Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Multi Collagen Protein 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 Protein is a dietary supplement by Ancient Nutrition with 7 active ingredients. Its ingredients are commonly taken for common cold and immune support, antioxidant support, skin health and collagen formation.Based on those ingredients, 386 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin C, Bacillus coagulans. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Multi Collagen Protein by Ancient Nutrition
Ask about any prescription or over-the-counter medication and we check it for interactions with Multi Collagen Protein by Ancient Nutrition — 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 Protein by Ancient Nutrition
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 6 active ingredients working together as a collagen complex. Bacillus coagulans is a probiotic — a live organism that may support digestive health.
The collagen comes from multiple sources: bovine (beef) hide collagen peptides, fish collagen peptides, eggshell membrane collagen, and a chicken bone broth protein concentrate. Collagen is a structural protein your body uses for skin, joints, and connective tissue.
The product has no inactive ingredients listed (no fillers, binders, or other additives on file).
Does it work?
Moderate evidence
Evidence is mixed across the ingredients. For digestive health, Bacillus coagulans is possibly effective for constipation and irritable bowel syndrome (IBS), though the data for antibiotic-associated diarrhea isn't reliable enough to rate.
The collagen peptides (both bovine and fish) are possibly effective for aging skin and dry skin, but evidence for muscle strength is insufficient or suggests they may not work. Eggshell membrane collagen is possibly effective for osteoarthritis, but data on aging skin and joint pain is insufficient.
For most other uses — athletic performance, cancer, muscle strength, and acne — the evidence we hold isn't established.
How safe is it?
Well-documented data
Vitamin C at normal supplement doses is well tolerated; at very high doses (above 2 grams daily), it can cause abdominal cramps, nausea, diarrhea, and in people prone to them, kidney stones. The collagen peptides are generally well tolerated but may rarely cause nausea, indigestion, diarrhea, or gas.
Bacillus coagulans is generally well tolerated in healthy adults, though quality varies across products. However, there's a rare concern: in severely ill or immunocompromised patients (including preterm infants with central lines), probiotics have caused serious infections like bacteremia and sepsis.
For pregnancy: vitamin C at normal amounts is likely safe, but high-dose supplements should be avoided unless your doctor advises otherwise. Eggshell membrane collagen should be avoided during pregnancy — there isn't enough safety data.
Collagen peptides and Bacillus coagulans aren't well studied in pregnancy; talk with your doctor before using. For breastfeeding, eggshell membrane should be avoided due to lack of safety data, and collagen peptides require caution.
Data on Bacillus coagulans while breastfeeding isn't on file.
Meds to double-check
Moderate interaction found
Before taking this product, check with your doctor or pharmacist if you take warfarin or other blood thinners, hormonal contraceptives or hormone replacement therapy, levothyroxine (thyroid hormone), chemotherapy drugs, antipsychotics, HIV protease inhibitors, or antibiotics. These are all moderate interactions involving vitamin C or Bacillus coagulans in this formula.
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 is a collagen blend with added probiotics and vitamin C. It may help with aging skin, joint health, and digestive regularity, though the evidence is modest.
If you take warfarin, hormonal birth control, thyroid medication, chemotherapy, antibiotics, or any regular prescription, talk with your doctor or pharmacist before starting — vitamin C and the probiotic can affect how several drugs work. Anyone with an egg allergy should avoid it.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 5 of 6 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Oct 24, 2023.
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 Protein, straight from the product label.
| Brand | Ancient Nutrition |
|---|---|
| Barcode (UPC) | 816401025333 |
| Net contents | 4.28 Ounce(s); 121.2 Gram(s) |
| Market status | On market |
| Date entered into DSLD | Oct 24, 2023 |
| DSLD ID | 293366 |
| Product type | Other Combinations |
| Supplement form | Powder |
| 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 Multi Collagen Protein by Ancient Nutrition, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Protein | 9 Gram(s), 18 Gram(s) | -- |
| Calories | 35 Calorie(s), 70 Calorie(s) | -- |
| Bacillus coagulans | 0 NP, 0 NP | -- |
| Chicken Bone Broth Protein concentrate | 0 NP, 0 NP | -- |
| Eggshell Membrane Collagen, Fermented | 0 NP, 0 NP | -- |
| Vitamin C | 90 mg, 180 mg | 100%, 200% |
| Bovine Hide Collagen Peptides, Hydrolyzed | 0 NP, 0 NP | -- |
| Multi Collagen Protein Blend | 10 Gram(s), 20 Gram(s) | -- |
| Fish Collagen Peptides, Hydrolyzed | 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.
General Statements
Ancient Nutrition transforms your health and vitality with history's healthiest whole nutrients.
Dr. Axe formula
Packaged by weight not volume. Settling may occur.
Formula
Our Multi Collagen Protein is uniquely formulated with 5 types of food source collagen that are clinically proven to promote healthy hair, skin, joints and digestion. Type I, II and III collagen support healthy skin, gut, nails, hair and joints Clinically-studied source of types V and X collagen to improve crow's feet after 4 weeks and reduce joint discomfort in 7 days. 5 types of food source collagen
20 g collagen per scoop Vitamin C 100% DV Probiotics
Formulation
Grass-fed Pasture raised
Clinically studied ingredients
Clinically proven to promote healthy skin, hair, joints & digestion
Color and odor may vary from lot to lot.
FDA Statement of Identity
Whole Food Dietary Supplement
Suggested/Recommended/Usage/Directions
Suggested use: Adults take one scoop with 8 ounces of water or your favorite hot or cold recipe.
Precautions
Contains: Egg, haddock, cod, pollock.
Warning: As with any dietary supplement, consult your healthcare practitioner before using this product, especially if you are pregnant, nursing or under medical supervision.
If you are currently undergoing HIV treatment, chemotherapy, or allograft therapy, do not use before consulting your physician. Do not use if safety seal is broken or missing.
Keep out of reach of children.
Notice: Use this product as a food supplement only, do not use for weight reduction.
Storage
Store in a cool, dry place.
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.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Multi Collagen Protein by Ancient Nutrition 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 Protein by Ancient Nutrition
These are the 7 active ingredients this product is made of. Select any to open its full monograph.
Serving size10.1 Gram(s) Dosage formPowder Servings per container12 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.
Protein
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 Protein Blend
- › Bacillus coagulans
- › Chicken Bone Broth Protein concentrate
- › Eggshell Membrane Collagen, Fermented
- › Bovine Hide Collagen Peptides, Hydrolyzed
- › Fish Collagen Peptides, Hydrolyzed
Multi Collagen Protein by Ancient Nutrition Drug Interactions
HelloPharmacist Interaction Report
Ancient Nutrition's Multi Collagen Protein interacts with medications through its vitamin C and Bacillus coagulans content.
The most serious concern is vitamin C's moderate interaction with blood thinners like warfarin — high doses may reduce how well the drug works by decreasing absorption. Vitamin C also moderately interacts with hormonal contraceptives and hormone replacement therapy, potentially raising estrogen levels by up to 55% in some cases.
Read the full breakdown — every affected drug type, severity by severity
Vitamin C carries moderate interactions with several chemotherapy drugs (alkylating agents and antitumor antibiotics), where its antioxidant effects might reduce their effectiveness. It also moderately affects levothyroxine absorption (thyroid hormone), aluminum absorption, and certain other medications including antipsychotics and HIV protease inhibitors.
Bacillus coagulans — a probiotic — moderately interacts with antibiotics; taking them at the same time might kill off the probiotic organisms and reduce B. coagulans effectiveness.
The collagen peptides (bovine and fish), eggshell membrane collagen, and chicken bone broth protein have no interactions documented in our data. We could not check chicken bone broth protein against medications because interaction data isn't on file for it.
Altogether, these interactions span 386 individual medications.
Use the medication checker below to look up your exact drugs before starting this product.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Multi Collagen Protein?
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 Protein interact with 386 drugs. Click any drug to see the details.
2 of the 7 ingredients in Multi Collagen Protein interact with drugs. Each result below shows which ingredient is responsible. Vitamin C Bacillus coagulans
Bismuth Subsalicylate, Metronidazole, TetracyclineHelidac
How Bismuth Subsalicylate, Metronidazole, Tetracycline interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionBleomycinBlenoxane
How Bleomycin interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CAntitumor Antibiotics Moderate
Interaction Summary
Theoretically, the antioxidant effects of vitamin C might reduce the effectiveness of antitumor antibiotics.
Read the full Vitamin C + Bleomycin interactionBusulfanBusulfex, Myleran
How Busulfan interacts with Multi Collagen Protein — 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 + Busulfan interactionCapreomycinCapastat
How Capreomycin interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Capreomycin interactionCarbenicillin Indanyl SodiumGeocillin
How Carbenicillin Indanyl Sodium interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Carbenicillin Indanyl Sodium interactionCarboplatinParaplatin
How Carboplatin interacts with Multi Collagen Protein — 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 + Carboplatin interactionCarmustineBiCNU, Gliadel, Gliadel Wafer
How Carmustine interacts with Multi Collagen Protein — 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 + Carmustine interactionCefaclorCeclor, Ceclor CD
How Cefaclor interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefaclor interactionCefadroxilCef-Tab, Duricef, Ultracef
How Cefadroxil interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefadroxil interactionCefamandoleMandol
How Cefamandole interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefamandole interactionCefazolinAncef
How Cefazolin interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefazolin interactionCefdinirOmnicef
How Cefdinir interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefdinir interactionCefditoren PivoxilSpectracef
How Cefditoren Pivoxil interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefditoren Pivoxil interactionCefepimeMaxipime
How Cefepime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefepime interactionCefiderocol Sulfate TosylateFetroja
How Cefiderocol Sulfate Tosylate interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefiderocol Sulfate Tosylate interactionCefiximeSuprax
How Cefixime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefixime interactionCefmetazoleZefazone
How Cefmetazole interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefmetazole interactionCefonicidMonocid
How Cefonicid interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefonicid interactionCefoperazoneCefobid
How Cefoperazone interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefoperazone interactionCefotaximeClaforan
How Cefotaxime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefotaxime interactionCefotetanCefotan
How Cefotetan interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefotetan interactionCefoxitinMefoxin
How Cefoxitin interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefoxitin interactionCefpodoxime ProxetilVantin
How Cefpodoxime Proxetil interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefpodoxime Proxetil interactionCefprozilCefzil
How Cefprozil interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefprozil interactionCeftazidimeCeftazidime, Ceptaz, Fortaz, Tazicef, Tazidime
How Ceftazidime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Ceftazidime interactionCeftibutenCedax
How Ceftibuten interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Ceftibuten interactionCeftizoximeCefizox
How Ceftizoxime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Ceftizoxime interactionCeftolozane Sulfate, Tazobactam SodiumZerbaxa
How Ceftolozane Sulfate, Tazobactam Sodium interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Ceftolozane Sulfate, Tazobactam Sodium interactionCeftriaxoneRocephin
How Ceftriaxone interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Ceftriaxone interactionCefuroximeCeftin, Kefurox, Zinacef
How Cefuroxime interacts with Multi Collagen Protein — through 1 ingredient. Tap an ingredient for the detail:
Bacillus CoagulansAntibiotic Drugs Moderate
Interaction Summary
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.
Read the full Bacillus Coagulans + Cefuroxime interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Multi Collagen Protein 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.
Bacillus coagulans
Antibiotic Drugs
Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B. coagulans.
B. coagulans preparations usually contain live and active organisms. Therefore, simultaneously taking antibiotics might kill a significant number of the organisms. Tell patients to separate administration of antibiotics and B. coagulans preparations by at least two hours.
Brand information
Manufacturer and brand details for Multi Collagen Protein, from the product label.
Ancient Nutrition
See all Ancient Nutrition products- Name
- Ancient Nutrition, LLC
- Street Address
- 2000 Mallory Lane Suite 130-307
- City
- Franklin
- State
- TN
- ZipCode
- 37067
- Web Address
- www.AncientNutrition.com
Multi Collagen Protein by Ancient Nutrition: Common Questions
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How can one product interact with so many drugs?
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Will this help my skin and joints?
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Multi Collagen Protein 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 Multi Collagen Protein’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Vitamin 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 → Herb & supplement monographBacillus Coagulans
Interacts with 182 drugsBacillus coagulans is a spore-forming probiotic that survives stomach acid well and may help with some digestive problems such as IBS, constipation, and certain types of diarrhea. The eviden...
Read the full Bacillus Coagulans 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 →Sources & How We Checked
Multi Collagen Protein'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 76 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.
Bacillus Coagulans 20 references
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Eggshell Membrane 3 references
Vitamin C 51 references
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- Slain D, Amsden JR, Khakoo RA, et al. Effect of high-dose vitamin C on the steady-state pharmacokinetics of the protease inhibitor indinavir in healthy volunteers. Pharmacotherapy 2005;25:165-70. PubMed
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- Fairweather-Tait S, Hickson K, McGaw B, et al. Orange juice enhances aluminium absorption from antacid preparation. Eur J Clin Nutr. 1994;48(1):71-3.
- Gruenwald, J., Graubaum, H. J., Busch, R., and Bentley, C. Safety and tolerance of ester-C compared with regular ascorbic acid. Adv.Ther. 2006;23(1):171-178.
- Rahimi, R., Nikfar, S., Rezaie, A., and Abdollahi, M. A meta-analysis on the efficacy and safety of combined vitamin C and E supplementation in preeclamptic women. Hypertens.Pregnancy. 2009;28(4):417-434. PubMed
- Einerson, B., Nathorn, C., Kitiyakara, C., Sirada, M., and Thamlikitkul, V. The efficacy of ascorbic acid in suboptimal responsive anemic hemodialysis patients receiving erythropoietin: a meta-analysis. J Med.Assoc.Thai. 2011;94 Suppl 1:S134-S146.
- Li, G., Li, L., Yu, C., and Chen, L. Effect of vitamins C and E supplementation on Helicobacter pylori eradication: a meta-analysis. Br.J Nutr 2011;106(11):1632-1637.
- Chen X, Shen L, Gu X, et al. High-dose supplementation with vitamin C--induced pediatric urolithiasis: the first case report in a child and literature review. Urology. 2014;84(4):922-4. PubMed
- Sattar A, Willman JE, Kolluri R. Possible warfarin resistance due to interaction with ascorbic acid: case report and literature review. Am J Health Syst Pharm. 2013;70(9):782-6. PubMed
- Yaich S, Chaabouni Y, Charfeddine K, et al. Secondary oxalosis due to excess vitamin C intake: a cause of graft loss in a renal transplant recipient. Saudi J Kidney Dis Transpl. 2014;25(1):113-6. PubMed
- Jalloh MA, Gregory PJ, Hein D, et al. Dietary supplement interactions with antiretrovirals: a systematic review. Int J STD AIDS. 2017 Jan;28(1):4-15. PubMed
- Rumbold A, Ota E, Nagata C, Shahrook S, Crowther CA. Vitamin C supplementation in pregnancy. Cochrane Database Syst Rev. 2015;(9):CD004072. PubMed
- Seo MS, Kim JK, Shim JY. High-dose vitamin C promotes regression of multiple pulmonary metastases originating from hepatocellular carcinoma. Yonsei Med J. 2015;56(5):1449-52. PubMed
- Skelin M, Lucijanic T, Amidzic Klaric D, et al. Factors Affecting Gastrointestinal Absorption of Levothyroxine: A Review. Clin Ther. 2017 Feb;39(2):378-403. PubMed
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- Giffen MA, McLemore JL. Hyperoxalosis Secondary to Intravenous Vitamin C Administration as a Non-Allopathic Treatment for Cancer. Acad Forensic Pathol 2019;9(1-2):118-126. PubMed
- Maike A, Sturgill D, Gallan A. Oxalate Nephropathy in a Renal Transplant Recipient After Receiving High Dose Ascorbic Acid. Am J Med Sci 2021. PubMed
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- Pejcic AV, Petrovic NZ, Djordjic MD, Milosavljevic MN. Vitamin C Levels in Pregnant Women and the Efficacy of Vitamin C Supplements in Preventing Premature Rupture of Membranes: A Systematic Review and Meta-Analysis. Balkan Med J 2024;41(4):248-260. PubMed
Collagen Peptides 2 references
- Trc T, Bohmová J. Efficacy and tolerance of enzymatic hydrolysed collagen (EHC) vs. glucosamine sulphate (GS) in the treatment of knee osteoarthritis (KOA). Int Orthop. 2011;35(3):341-8. PubMed
- Evans M, Lewis ED, Zakaria N, Pelipyagina T, Guthrie N. A randomized, triple-blind, placebo-controlled, parallel study to evaluate the efficacy of a freshwater marine collagen on skin wrinkles and elasticity. J Cosmet Dermatol. 2021;20(3):825-834. 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.
© 2021 Therapeutic Research Center, LLC