Eye Moisture Complex Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Eye Moisture Complex against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Eye Moisture Complex is a dietary supplement by Indiana Botanic Gardens with 3 active ingredients. Its ingredients are commonly taken for morning sickness in pregnancy, premenstrual syndrome (pms), preventing or treating b6 deficiency.Based on those ingredients, 416 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Vitamin B6, Vitamin C. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
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HelloPharmacist Scorecard of Eye Moisture Complex by Indiana Botanic Gardens
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
Eye Moisture Complex contains 5 active ingredients: vitamin B6, polyunsaturated fat, vitamin C, monounsaturated fat, and fatty acids. The product also includes inactive ingredients—gelatin, rice bran oil, DL-alpha-tocopherol, ascorbyl palmitate, and titanium dioxide—that function as the capsule shell and stabilizers.
Vitamin B6 is a water-soluble B vitamin that plays roles in nerve function and metabolism. Vitamin C is an antioxidant involved in immune function and collagen formation.
The fats and fatty acids in this formula may support eye moisture and comfort, though the specific roles aren't detailed in the product information we have.
Does it work?
Moderate evidence
Vitamin B6 is effective for sideroblastic anemia and vitamin B6 deficiency, and likely effective for lowering homocysteine levels. It's possibly effective for pyridoxine-dependent epilepsy and pregnancy-induced nausea and vomiting.
Vitamin C is effective for vitamin C deficiency and possibly effective for anemia of chronic disease, atrial fibrillation, cataracts, and exercise-induced respiratory infections. We don't have effectiveness data in our files for polyunsaturated fat, monounsaturated fat, or fatty acids in relation to eye moisture or the product's intended use.
How safe is it?
Well-documented data
Vitamin B6 is generally well tolerated at doses below 100 mg daily. Common side effects at any dose include abdominal pain, headache, heartburn, nausea, and vomiting; rarely, high doses cause sensory nerve damage (neuropathy), particularly at doses exceeding 1,000 mg daily or cumulative doses of 1,000 grams or more.
Vitamin C is well tolerated at normal doses; above 2 grams daily, it can cause stomach cramps, diarrhea, headache, nausea, and vomiting, and may contribute to kidney stones in susceptible people. For pregnancy, vitamin B6 is rated likely safe at normal amounts and recommended doses, though its pregnancy rating is mixed; ask your doctor or pharmacist before using high doses during pregnancy.
Vitamin C is likely safe at dietary and prenatal vitamin doses but should not be taken as a high-dose supplement in pregnancy without medical guidance. Data on safety during breastfeeding is not on file for all ingredients—discuss with your healthcare provider if you're nursing.
Meds to double-check
Moderate interaction found
Before taking this product, double-check with your doctor or pharmacist if you take seizure medications (phenytoin, phenobarbital), blood thinners (warfarin), estrogen-based birth control or hormone replacement therapy, antihypertensive (blood pressure) drugs, the heart medication amiodarone, chemotherapy agents, levothyroxine (thyroid medication), levodopa (for Parkinson's disease), antipsychotics like fluphenazine, or the HIV medication indinavir. Moderate-severity interactions are documented for all of these drug types.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This product may be helpful if you're looking to support eye comfort, particularly if you have a vitamin B6 or C deficiency. However, if you take any blood pressure medications, seizure drugs, blood thinners, birth control, hormone replacement therapy, chemotherapy, thyroid medication, or psychiatric medications, check with your doctor or pharmacist before starting—vitamin B6 and C can affect how these work.
Keep doses moderate; the supplement itself isn't high-dose, but talk with your healthcare provider about whether it's right for your personal situation.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 25, 2015.
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 Eye Moisture Complex, straight from the product label.
| Brand | Indiana Botanic Gardens |
|---|---|
| Barcode (UPC) | 703308890464 |
| Net contents | 45 Liquid Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jun 25, 2015 |
| DSLD ID | 46991 |
| Product type | Fat/fatty Acid |
| Supplement form | Capsule |
| Dietary claims / uses | 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 Eye Moisture Complex by Indiana Botanic Gardens, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Calories | 15 {Calories} | -- |
| Calories from Fat | 15 {Calories} | -- |
| Vitamin B6 | 50 mg | 2500% |
| Polyunsaturated Fat | 1 Gram(s) | -- |
| Total Fat | 1.5 Gram(s) | 2% |
| Vitamin C | 375 mg | 625% |
| Monounsaturated Fat | 0.5 Gram(s) | -- |
| Trans Fat | 0 Gram(s) | -- |
| Fatty Acids | 1500 mg | -- |
Other ingredients: Gelatin, Rice Bran Oil, DL-Alpha-Tocopherol, Ascorbyl Palmitate, Titanium Dioxide
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Suggested/Recommended/Usage/Directions
Suggested Use: Take 3 liquid capsules, once daily with a meal, as a dietary supplement, or as directed by a physician.
Precautions
Warning: If you are taking any medications or are pregnant or nursing do not use prior to consulting a physician.
For your protection, this container has an outer safety seal. (Do not accept if missing or broken.)
KEEP OUT OF REACH OF CHILDREN
FDA Disclaimer Statement
*THIS STATEMENT HAS NOT BEEN EVALUATED BY THE FOOD AND DRUG ADMINISTRATION. THIS PRODUCT IS NOT INTENDED TO DIAGNOSE, TREAT, CURE OR PREVENT ANY DISEASE.
Storage
Store in a dry, cool place.
General Statements
Vision Support*
FDA Statement of Identity
Dietary Supplement
Seals/Symbols
IBG INDIANA BOTANIC GARDENS(R)
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Eye Moisture Complex by Indiana Botanic Gardens 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 Eye Moisture Complex by Indiana Botanic Gardens
These are the 3 active ingredients this product is made of. Select any to open its full monograph.
Serving size3 Liquid Capsule(s) Dosage formCapsule Servings per container15 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Vitamin B6
Interacts with210 drugs
Vitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is b...
Vitamin B6 monograph & interactionsVitamin 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 & interactionsFatty Acids
Other (inactive) ingredients: Gelatin, Rice Bran Oil, DL-Alpha-Tocopherol, Ascorbyl Palmitate, Titanium Dioxide. These complete the product’s ingredient list but are not active constituents.
Eye Moisture Complex by Indiana Botanic Gardens Drug Interactions
HelloPharmacist Interaction Report
Eye Moisture Complex by Indiana Botanic Gardens contains vitamin B6 and vitamin C, both of which interact with medications.
The most serious interaction is vitamin B6's potential to reduce the effectiveness of seizure medications like phenytoin and phenobarbital at high doses—a moderate-severity effect that could compromise seizure control.
Read the full breakdown — every affected drug type, severity by severity
Vitamin B6 may lower blood pressure additively with antihypertensive drugs, and it can increase photosensitivity from the heart medication amiodarone. At high doses it may also interfere with levodopa (for Parkinson's disease), though this effect is blocked if you're taking the combination product Sinemet.
Vitamin C carries moderate interactions with estrogen-containing birth control and hormone replacement therapy (it may raise estrogen levels), chemotherapy drugs like alkylating agents and antitumor antibiotics (where its antioxidant effect could reduce drug potency), blood thinners like warfarin at high doses, the antipsychotic fluphenazine, the HIV medication indinavir, and thyroid medication levothyroxine. Vitamin C also increases absorption of aluminum from aluminum-based compounds.
We could not check polyunsaturated fat, monounsaturated fat, and fatty acids—we hold no data for them. Altogether, these interactions span 416 individual medications.
Before adding this supplement, check your exact medications with the search tool on this page or talk with your doctor or pharmacist.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Eye Moisture Complex?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Eye Moisture Complex interact with 416 drugs. Click any drug to see the details.
2 of the 3 ingredients in Eye Moisture Complex interact with drugs. Each result below shows which ingredient is responsible. Vitamin B6 Vitamin C
AtenololAtenix, Tenormin
How Atenolol interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol interactionAtenolol, ChlortalidoneAtenixCo, Tenoret 50, Totaretic
How Atenolol, Chlortalidone interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol, Chlortalidone interactionAtenolol, ChlorthalidoneTenoretic
How Atenolol, Chlorthalidone interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Atenolol, Chlorthalidone interactionAtropine, Hyoscyamine, PhenobarbitalHypnaldyne
How Atropine, Hyoscyamine, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital interactionAtropine, Hyoscyamine, Phenobarbital, ScopolamineBarbidonna No. 2, Belladonna Phenobarbital
How Atropine, Hyoscyamine, Phenobarbital, Scopolamine interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Phenobarbital, Scopolamine interactionAtropine, Hyoscyamine, Scopolamine, PhenobarbitalBarbeloid, Donnatal #2, Donphen
How Atropine, Hyoscyamine, Scopolamine, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Hyoscyamine, Scopolamine, Phenobarbital interactionAtropine, PhenobarbitalAnthrocol
How Atropine, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Atropine, Phenobarbital interactionAzilsartanEdarbi
How Azilsartan interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Azilsartan interactionAzilsartan, ChlorthalidoneEdarbyclor
How Azilsartan, Chlorthalidone interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Azilsartan, Chlorthalidone interactionBazedoxifene Acetate, Conjugated EstrogensDuavee
How Bazedoxifene Acetate, Conjugated Estrogens interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin CEstrogens Moderate
Interaction Summary
Vitamin C might increase blood levels of estrogens.
Read the full Vitamin C + Bazedoxifene Acetate, Conjugated Estrogens interactionBelladona Extract, PhenobarbitalChardonna-2
How Belladona Extract, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladona Extract, Phenobarbital interactionBelladonna Alkaloids, Ergotamine Tartrate, PhenobarbitalBel Tabs, Bellamine-S, Bellaphen-S, Duragal S, Phenarbal S, Spastrin
How Belladonna Alkaloids, Ergotamine Tartrate, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Alkaloids, Ergotamine Tartrate, Phenobarbital interactionBelladonna Alkaloids, PhenobarbitalBarbidonna, Donnatal
How Belladonna Alkaloids, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Alkaloids, Phenobarbital interactionBelladonna Extract, PhenobarbitalBelap
How Belladonna Extract, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna Extract, Phenobarbital interactionBelladonna, Ergotamine Tartrate, Phenobarbital
How Belladonna, Ergotamine Tartrate, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Ergotamine Tartrate, Phenobarbital interactionBelladonna, Ergotamine, PhenobarbitalBellergal-S
How Belladonna, Ergotamine, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Ergotamine, Phenobarbital interactionBelladonna, PhenobarbitalBellophen, Susano
How Belladonna, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Belladonna, Phenobarbital interactionBellafoline, PhenobarbitalBelladenal, Belladenal-S
How Bellafoline, Phenobarbital interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Phenobarbital (luminal) Moderate
Interaction Summary
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Read the full Vitamin B6 + Bellafoline, Phenobarbital interactionBenazeprilLotensin
How Benazepril interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benazepril interactionBenazepril, HydrochlorothiazideLotensin HCT
How Benazepril, Hydrochlorothiazide interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benazepril, Hydrochlorothiazide interactionBendamustineBelrapzo, Treanda, Vivimusta
How Bendamustine interacts with Eye Moisture Complex — 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 + Bendamustine interactionBendamustine HydrochlorideBendeka
How Bendamustine Hydrochloride interacts with Eye Moisture Complex — 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 + Bendamustine Hydrochloride interactionBendroflumethiazideAprinox, Naturetin, Neo-NaClex
How Bendroflumethiazide interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide interactionBendroflumethiazide, NadololCorzide
How Bendroflumethiazide, Nadolol interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide, Nadolol interactionBendroflumethiazide, Rauwolfia SerpentinaRauzide
How Bendroflumethiazide, Rauwolfia Serpentina interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bendroflumethiazide, Rauwolfia Serpentina interactionBenzthiazideExna
How Benzthiazide interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Benzthiazide interactionBetaxololBetoptic, Kerlone
How Betaxolol interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Betaxolol interactionBisoprololZebeta
How Bisoprolol interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bisoprolol interactionBisoprolol, HydrochlorothiazideZiac
How Bisoprolol, Hydrochlorothiazide interacts with Eye Moisture Complex — through 1 ingredient. Tap an ingredient for the detail:
Vitamin B6Antihypertensive Drugs Moderate
Interaction Summary
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Read the full Vitamin B6 + Bisoprolol, Hydrochlorothiazide interactionBleomycinBlenoxane
How Bleomycin interacts with Eye Moisture Complex — 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 interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Eye Moisture Complex with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Vitamin B6
Amiodarone (Cordarone)
Theoretically, vitamin B6 might increase the photosensitivity caused by amiodarone.
Despite initial case reports suggesting that pyridoxine may have a protective effect against amiodarone-induced photosensitivity, preliminary clinical research suggests that pyridoxine may actually exacerbate this adverse effect.
Antihypertensive Drugs
Theoretically, vitamin B6 may have additive effects when used with antihypertensive drugs.
Research in hypertensive rats shows that vitamin B6 can decrease systolic blood pressure. Similarly, clinical research in patients with hypertension shows that taking high doses of vitamin B6 may reduce systolic and diastolic blood pressure, possibly by reducing plasma levels of epinephrine and norepinephrine.
Phenobarbital (Luminal)
High doses of vitamin B6 may reduce the levels and clinical effects of phenobarbital.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenobarbital, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenobarbital to avoid high doses of vitamin B6.
Phenytoin (Dilantin)
High doses of vitamin B6 may reduce the levels and clinical effects of phenytoin.
Preliminary clinical evidence suggests that vitamin B6 200 mg daily can reduce plasma levels of phenytoin, possibly by increasing metabolism. It is not known whether lower doses have any effect. Advise people taking phenytoin to avoid high doses of vitamin B6.
Levodopa
Vitamin B6 may increase the metabolism of levodopa when taken alone, but not when taken in conjunction with carbidopa.
Vitamin B6 (pyridoxine) enhances the metabolism of levodopa, reducing its clinical effects. However, this interaction does not occur when carbidopa is used concurrently with levodopa (Sinemet). Therefore, it is not likely to be a problem in most people.
Vitamin 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.
Brand information
Manufacturer and brand details for Eye Moisture Complex, from the product label.
Eye Moisture Complex by Indiana Botanic Gardens: Common Questions
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The Full Monographs Behind Eye Moisture Complex’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Vitamin B6
Interacts with 210 drugsVitamin B6 (pyridoxine) is an essential water-soluble vitamin that your body needs for metabolism, brain function, and making red blood cells. It is best known for helping with pregnancy-rel...
Read the full Vitamin B6 monograph → Herb & supplement 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
Eye Moisture Complex's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 83 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Vitamin B6 32 references
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- South M. Neonatal seizures after pyridoxine use -- reply. Lancet 1999;354:2083. PubMed
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
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- Vasdev, S., Ford, C. A., Parai, S., Longerich, L., and Gadag, V. Dietary vitamin B6 supplementation attenuates hypertension in spontaneously hypertensive rats. Mol.Cell Biochem. 1999;200(1-2):155-162.
- de, Vogel S., Dindore, V., van, Engeland M., Goldbohm, R. A., van den Brandt, P. A., and Weijenberg, M. P. Dietary folate, methionine, riboflavin, and vitamin B-6 and risk of sporadic colorectal cancer. J Nutr 2008;138(12):2372-2378. PubMed
- Hagen, I., Nesheim, B. I., and Tuntland, T. No effect of vitamin B-6 against premenstrual tension. A controlled clinical study. Acta Obstet.Gynecol.Scand. 1985;64(8):667-670. PubMed
- Aybak, M., Sermet, A., Ayyildiz, M. O., and Karakilcik, A. Z. Effect of oral pyridoxine hydrochloride supplementation on arterial blood pressure in patients with essential hypertension. Arzneimittelforschung. 1995;45(12):1271-1273.
- Lal, K. J., Dakshinamurti, K., and Thliveris, J. The effect of vitamin B6 on the systolic blood pressure of rats in various animal models of hypertension. J Hypertens. 1996;14(3):355-363. PubMed
- Lauritzen CH, Reuter HD, Repges R, Bohnert K, and Schmidt U. Treatment of premenstrual tension syndrome with Vitex agnus castus. Controlled, double-blind study versus pyridoxine. Phytomed 1997;4(3):183-189. PubMed
- Fonseca VA, Lavery LA, Thethi TK, et al. Metanx in type 2 diabetes with peripheral neuropathy: A randomized trial. Am J Med 2013;126(2):141-9. PubMed
- Hankey GJ, Eikelboom JW, Yi Q, et al. Treatment with B vitamins and incidence of cancer in patients with previous stroke or transient ischemic attack: Results of a randomized placebo-controlled trial. Stroke 2012;43(6):1572-7. PubMed
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- Mahmoud A, Tabassum S, Al Enazi S, et al. Amelioration of levetiracetam-induced behavioral side effects by pyridoxine. A randomized double blind controlled study. Pediatr Neurol 2021;119:15-21. PubMed
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- Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 189: Nausea And Vomiting Of Pregnancy. Obstet Gynecol. 2018;131(1):e15-e30. PubMed
Vitamin C 51 references
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- Levine M, Rumsey SC, Daruwala R, et al. Criteria and recommendations for vitamin C intake. JAMA 1999;281:1415-23. PubMed
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- Segal S, Kaminski S. Drug-nutrient interactions. American Druggist 1996 Jul;42-8.
- 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/.
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- 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
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- 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
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- Mc Leod DC, Nahata MC. Inefficacy of ascorbic acid as a urinary acidifier (letter). N Engl J Med 1977;296:1413. DOI
- Hansten PD, Hayton WL. Effect of antacid and ascorbic acid on serum salicylate concentration. J Clin Pharmacol 1980;20:326-31. PubMed
- Dysken MW, Cumming RJ, Channon RA, Davis JM. Drug interaction between ascorbic acid and fluphenazine. JAMA 1979;241:2008. DOI
- 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
- 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
- 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
- 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
- Weintraub M, Griner PF. Warfarin and ascorbic acid: lack of evidence for a drug interaction. Toxicol Appl Pharmacol 1974;28:53-6. PubMed
- 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
- 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
- Ward NC, Hodgson JM, Croft KD, et al. The combination of vitamin C and grape-seed polyphenols increases blood pressure: a randomized, double-blind, placebo-controlled trial. J Hypertens 2005;23:427-34.. PubMed
- Prasad KN. Rationale for using high-dose multiple dietary antioxidants as an adjunct to radiation therapy and chemotherapy. J Nutr 2004;134:3182S-3S. PubMed
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- 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.
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- 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
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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