Interactions on record — worth a quick check against your medications. Based on 4 of 7 ingredients. Check your meds →
Dietary supplement

Multi Collagen Protein Ingredients & Drug Interactions

by Ancient Nutrition

Multi Collagen Protein label
See full label image
Powder Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
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

The interaction bottom line Most serious interaction: Moderate

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.

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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.

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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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 1 of its 6 active ingredients.
  • “Multi Collagen Complex Blend” is a proprietary blend — the label gives one combined amount (10 Gram(s)) without saying how much of each component you get.

This powder contains 6 active ingredients: three forms of collagen (from chicken bone broth, bovine hide, and fish), plus vitamin C, eggshell membrane collagen, and Bacillus coagulans (a live-culture probiotic). The collagen peptides are hydrolyzed — broken into smaller pieces so your body can absorb them more easily.

Vitamin C supports collagen formation in your body, while the probiotic may aid digestion. There are no inactive fillers listed.

Does it work?

Moderate evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Moderate

Some clinical evidence supports this product's ingredients for its stated purpose, but it isn't conclusive.

Why this rating?
  • The label markets this product for: Promote healthy hair, skin, joints and digestion.
  • We looked for evidence on: Aging skin, Atopic dermatitis (eczema), Dry skin, Cellulite, Atrophic acne scars, Acne — and 4 related terms.
  • The strongest evidence on file: Collagen Peptides is rated "Possibly Effective" for Aging skin (Natural Medicines).
  • Also on file: Collagen Peptides is rated "Possibly Effective" for Dry skin.
  • Also on file: Vitamin C is rated "Insufficient Reliable Evidence To Rate" for Acne, Aging skin, Atrophic acne scars, Exercise-induced muscle damage.

The collagen peptides (bovine and fish) are possibly effective for aging and dry skin based on available evidence, though they're rated possibly ineffective for muscle strength. Eggshell membrane collagen and vitamin C have no effectiveness ratings on file.

Bacillus coagulans is possibly effective for constipation and irritable bowel syndrome, though the evidence and product quality vary. The data we hold doesn't establish effectiveness for other uses.

The evidence, ingredient by ingredient Vitamin C Eggshell Membrane Collagen Peptides Bacillus Coagulans

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 3 of the 4 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 4 of 4.
  • General safety write-ups exist for 4 of 4.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Vitamin C is generally well tolerated at normal doses, but very high doses can cause abdominal cramps, heartburn, diarrhea, nausea, and kidney stones — especially if you're prone to them. Most side effects happen above 2 grams daily.

The collagen peptides are generally well tolerated but may rarely cause nausea, indigestion, diarrhea, or gas. Eggshell membrane should be avoided if you have an egg allergy.

Bacillus coagulans is generally well tolerated in healthy adults, though live probiotics carry a theoretical risk of infection in severely immunocompromised patients or those with certain catheters — talk to your doctor if either applies to you.

Side effects, ingredient by ingredient Vitamin C Eggshell Membrane Collagen Peptides Bacillus Coagulans

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 2 of the 4 matched ingredients can interact with medications — Vitamin C, Bacillus Coagulans.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; cancer treatments.
  • For scale: 386 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check with your pharmacist before taking this if you're on birth control or hormone replacement therapy, warfarin or other blood thinners, thyroid medication (levothyroxine), chemotherapy drugs, antipsychotics, HIV medications (indinavir), or antibiotics. All of these are affected by ingredients in this product.

Check your own medication Run your meds through the checker above

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 product combines collagen sources with vitamin C and a probiotic. It may help with skin aging and dryness, and the probiotic may support digestive health.

If you're on birth control, hormone therapy, warfarin, thyroid medication, antibiotics, or chemotherapy, check your exact medications with our tool before starting. If you have an egg allergy or are immunocompromised, talk to your pharmacist first.

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 Dec 21, 2024.

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

At a glance

General information

Key facts about Multi Collagen Protein, straight from the product label.

Brand Ancient Nutrition
Barcode (UPC) 816401022172
Net contents 8.6 Ounce(s); 242.4 Gram(s)
Market status On market
Date entered into DSLD Dec 21, 2024
DSLD ID 305936
Product type Other Combinations
Supplement form Powder
Dietary claims / uses Nutrient, All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
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

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
10.1 Gram(s), 20.2 Gram(s)
Maximum serving Sizes:
10.1 Gram(s), 20.2 Gram(s)
Servings per container
24
UPC/BARCODE
816401022172
IngredientAmount% DV
Calories35 Calorie(s), 70 Calorie(s)--
Protein9 Gram(s), 18 Gram(s)--
Chicken Bone Broth Protein concentrate0 NP, 0 NP--
Eggshell Membrane Collagen, Fermented0 NP, 0 NP--
Vitamin C90 mg, 180 mg100%, 200%
Bovine Hide Collagen Peptides, Hydrolyzed0 NP, 0 NP--
Fish Collagen Peptides, Hydrolyzed0 NP, 0 NP--
Bacillus coagulans0 NP, 0 NP--
Multi Collagen Complex Blend10 Gram(s), 20 Gram(s)--

Tap any ingredient to jump to its full detail below.

Label statements
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 has one goal - to transform the health of every individual on the planet with history's most powerful superfoods.

Facebook Instagram @ancientnutrition Save the World with Superfoods www.AncientNutrition.com

Packaged by weight, not volume. Settling may occur.

Formula

Our Multi Collagen Protein is uniquely formulated with 10 types of food source collagen and is clinically proven to promote healthy hair, skin, joints and digestion.

10 Types of collagen Vitamin C + Probiotics 20g Collagen per 2 scoops

Formulation

Improves the appearance of crow's feet after 4 weeks Reduces joint discomfort in 7 days

Clinically studied ingredients Clinically proven to promote healthy, skin, hair, joints & digestion Grass-fed Pasture-raised

Color and odor may vary from lot to lot.

IGEN Non-GMO tested This product does not contain common GE genes or proteins. Visit igenprogram.com.

We support the RANCH Project to heal the planet, feed the world and transform health. www.RanchProject.com

Suggested/Recommended/Usage/Directions

Try it in your: + Daily coffee or smoothie + Pancakes, oatmeal or cookies + Other favorite recipes

Suggested Use: Adults mix one scoop with 8 ounces of liquid.

FDA Statement of Identity

Whole Food Dietary Supplement

Precautions

Contains: Egg, fish (haddock, cod, pollock). Produced on equipment that also processes peanuts, tree nuts, milk, soybean, wheat, sesame, shellfish, fish, egg. Warning: If you are pregnant, nursing, allergic, have a medical condition or taking any medications, consult a doctor before using this or any other dietary supplement.

Warning: If you are pregnant, nursing, allergic, have a medical condition or taking any medications, consult a doctor before using this or any other dietary supplement.

Do not use if inner safety seal is broken or missing. Notice: Use this product as a food supplement only. Do not use for weight reduction.

Keep out of reach of children.

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

IGEN Non-GMO tested

R.A.N.C.H. Project

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Multi Collagen Protein by Ancient Nutrition label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Multi Collagen Protein label

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)
What’s inside

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 container24 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

9 Gram(s) per serving

Vitamin C

Interacts with
207 drugs
90 mg per serving Form: Lipid Metabolite Ascorbate

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 & interactions

Multi Collagen Complex Blend

10 Gram(s) per serving
Interaction report

Multi Collagen Protein by Ancient Nutrition Drug Interactions

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 checker
386Drugs
280 Moderate 106 Minor

Ingredients driving the most interactions

Vitamin C 207
Bacillus coagulans 182

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

Each 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 C13 drug types · 207 drugs

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.

Likelihood Possible Evidence D
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.

Likelihood Probable Evidence B
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.

Likelihood Possible Evidence D
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.

Likelihood Probable Evidence B
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.

Likelihood Possible Evidence D
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.

Likelihood Probable Evidence B
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.

Likelihood Probable Evidence B
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.

Likelihood Possible Evidence D
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.

Likelihood Probable Evidence B
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.

Likelihood Possible Evidence B
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.

Likelihood Possible Evidence B
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.

Likelihood Possible Evidence A
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.

Likelihood Possible Evidence B
Vitamin C full monograph & interactions

Bacillus coagulans1 drug type · 182 drugs

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.

Likelihood Probable Evidence D
Bacillus coagulans full monograph & interactions
The maker

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
3480 Summertown Hwy
City
Summertown
State
TN
ZipCode
38483
Web Address
www.AncientNutrition.com
Pharmacist Counseling Corner

Multi Collagen Protein by Ancient Nutrition: Common Questions

Does Multi Collagen Protein by Ancient Nutrition interact with any medications?
Yes. Based on its ingredients, Multi Collagen Protein has a known interaction with 386 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Multi Collagen Protein contains 7 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this while pregnant?
Eggshell membrane should be avoided during pregnancy — there isn't enough safety information. Vitamin C at normal dietary amounts from food and prenatal vitamins is fine, but avoid high-dose supplements unless your doctor approves. The collagen peptides and Bacillus coagulans haven't been well studied in pregnancy, so talk to your doctor before using this product.
Can I take this while breastfeeding?
Eggshell membrane should be avoided while breastfeeding due to lack of safety data. Vitamin C at recommended amounts is considered safe, but avoid high-dose supplements unless directed by your doctor. The collagen peptides and Bacillus coagulans have limited safety information during breastfeeding — check with your pharmacist first.
What's collagen peptides, and why are they in here?
Collagen peptides are broken-down collagen protein from animal sources — easier for your body to absorb. The evidence suggests they're possibly helpful for aging and dry skin. This product includes them from both bovine (cow) and fish sources.
Does the vitamin C in this affect how much my thyroid medication I absorb?
Yes — vitamin C can increase how much levothyroxine (Synthroid) your body absorbs, which could raise your thyroid hormone levels. Your doctor may need to check your TSH levels and adjust your dose. Don't take this product without telling your prescriber.
Can I take this with antibiotics?
You can, but the Bacillus coagulans (probiotic) in this formula may be killed by antibiotics if you take them at the same time. Space them out by a few hours — take your antibiotic, then this product later — to protect the probiotic's effectiveness.
What are the common side effects?
Vitamin C at higher doses can cause stomach cramps, heartburn, diarrhea, nausea, and headache. The collagen peptides rarely cause nausea, indigestion, diarrhea, or gas. These adverse effects are uncommon at typical doses.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

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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.

Multi Collagen Protein label
Go deeper

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.

Herb & supplement monograph

Vitamin C

Interacts with 207 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 immune function, collagen, and acts as an...

Read the full Vitamin C monograph → Herb & supplement monograph

Eggshell 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 monograph

Collagen 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 monograph

Bacillus Coagulans

Interacts with 182 drugs

Bacillus 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 →
Sources

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.

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.

Eggshell Membrane 3 references
  1. Osteoarthritis — MedlinePlus (NIH) Source
  2. Dietary Supplements: What You Need to Know — NIH Office of Dietary Supplements Source
  3. Using Dietary Supplements Wisely — NIH NCCIH Source

See these in context on the Eggshell Membrane monograph →

Vitamin C 51 references
  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Back DJ, Breckenridge AM, MacIver M, et al. Interaction of ethinyloestradiol with ascorbic acid in man. Br Med J (Clin Res Ed) 1981;282:1516.
  3. Morris JC, Beeley L, Ballantine N. Interaction of ethinyloestradiol with ascorbic acid in man [letter]. Br Med J (Clin Res Ed) 1981;283:503.
  4. Labriola D, Livingston R. Possible interactions between dietary antioxidants and chemotherapy. Oncology 1999;13:1003-8.
  5. Dwyer JH, Merz NB, Shirocre AM, et al. Progression of early atherosclerosis and intake of vitamin C and vitamin E from supplements and food. The Los Angeles Atherosclerosis Study. 41st Annual Conference on Cardiovascular Disease Epidemiology and Prevent
  6. Levine M, Rumsey SC, Daruwala R, et al. Criteria and recommendations for vitamin C intake. JAMA 1999;281:1415-23. PubMed
  7. Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
  8. Segal S, Kaminski S. Drug-nutrient interactions. American Druggist 1996 Jul;42-8.
  9. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press, 2000. Available at: http://www.nap.edu/books/0309069351/html/.
  10. Houston JB, Levy G. Drug biotransformation interactions in man VI: Acetaminophen and ascorbic acid. J Pharm Sci 1976;65:1218-21. PubMed
  11. Brown BG, Zhao XQ, Chait A, et al. Simvastatin and niacin, antioxidant vitamins, or the combination for the prevention of coronary disease. N Engl J Med 2001;345:1583-93. DOI
  12. Rosenthal G. Interaction of ascorbic acid and warfarin. JAMA 1971;215:1671. DOI
  13. Hume R, Johnstone JM, Weyers E. Interaction of ascorbic acid and warfarin. JAMA 1972;219:1479. DOI
  14. Smith EC, Skalski RJ, Johnson GC, Rossi GV. Interaction of ascorbic acid and warfarin. JAMA 1972;221:1166. DOI
  15. Traxer O, Huet B, Poindexter J, et al. Effect of ascorbic acid consumption on urinary stone risk factors. J Urol 2003;170:397-401.. PubMed
  16. Domingo JL, Gomez M, Llobet JM, Richart C. Effect of ascorbic acid on gastrointestinal aluminum absorption (letter). Lancet 1991;338:1467.
  17. Domingo JL, Gomez M, Llobet JM, Corbella J. Influence of some dietary constituents on aluminum absorption and retention in rats. Kidney Int 1991;39:598-601. PubMed
  18. Partridge NA, Regnier FE, White JL, Hem SL. Influence of dietary constituents on intestinal absorption of aluminum. Kidney Int 1989;35:1413-7. PubMed
  19. Mc Leod DC, Nahata MC. Inefficacy of ascorbic acid as a urinary acidifier (letter). N Engl J Med 1977;296:1413. DOI
  20. Hansten PD, Hayton WL. Effect of antacid and ascorbic acid on serum salicylate concentration. J Clin Pharmacol 1980;20:326-31. PubMed
  21. Dysken MW, Cumming RJ, Channon RA, Davis JM. Drug interaction between ascorbic acid and fluphenazine. JAMA 1979;241:2008. DOI
  22. Vihtamaki T, Parantainen J, Koivisto AM, et al. Oral ascorbic acid increases plasma oestradiol during postmenopausal hormone replacement therapy. Maturitas 2002;42:129-35. PubMed
  23. 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
  24. Cheung MC, Zhao XQ, Chait A, et al. Antioxidant supplements block the response of HDL to simvastatin-niacin therapy in patients with coronary artery disease and low HDL. Arterioscler Thromb Vasc Biol 2001;21:1320-6. PubMed
  25. Feetam CL, Leach RH, Meynell MJ. Lack of a clinically important interaction between warfarin and ascorbic acid. Toxicol Appl Pharmacol 1975;31:544-7. PubMed
  26. Weintraub M, Griner PF. Warfarin and ascorbic acid: lack of evidence for a drug interaction. Toxicol Appl Pharmacol 1974;28:53-6. PubMed
  27. Lee DH, Folsom AR, Harnack L, et al. Does supplemental vitamin C increase cardiovascular disease risk in women with diabetes? Am J Clin Nutr 2004;80:1194-200. PubMed
  28. Taylor EN, Stampfer MJ, Curhan GC. Dietary factors and the risk of incident kidney stones in men: new insights after 14 years of follow-up. J Am Soc Nephrol 2004;15:3225-32. PubMed
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See these in context on the Vitamin C monograph →

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See these in context on the Bacillus Coagulans monograph →

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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

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