Redox Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Redox 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
Redox is a dietary supplement by Douglas Laboratories with 5 active ingredients. Its ingredients are commonly taken for sleep quality and insomnia, relaxation, cognitive function.Based on those ingredients, 408 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Selenium, L-Cysteine, L-Glycine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Redox by Douglas Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Redox by Douglas Laboratories — 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 Redox by Douglas Laboratories
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
Redox contains 5 active ingredients: L-glycine, L-glutamic acid, L-cysteine, L-glutathione, and selenium. These amino acids and the mineral selenium are meant to support cellular redox (oxidation-reduction) processes in the body.
The product also contains inactive ingredients — cellulose, gelatin, vegetable stearate, and vitamin E — which serve as a capsule and binder.
Does it work?
Strong evidence
The evidence for Redox's ingredients is mixed and limited. L-glycine is possibly effective for schizophrenia, but evidence for attention-deficit hyperactivity disorder (ADHD), benign prostatic hyperplasia (enlarged prostate), cystic fibrosis, and a rare genetic condition called 3-phosphoglycerate dehydrogenase deficiency is insufficient.
L-cysteine has insufficient evidence for hair loss, leg ulcers, hangover, stroke, and stomach inflammation. Selenium is likely effective for selenium deficiency and possibly effective for Kashin-Beck disease (a joint condition), pre-eclampsia (a pregnancy complication), and autoimmune thyroiditis, but it appears ineffective for high cholesterol.
For most uses listed on the label or in your question, the evidence we hold is not established.
How safe is it?
Well-documented data
L-glycine is generally well tolerated at typical doses, though long-term safety data are limited. Rarely, it can cause mild sedation, irritability, insomnia, fatigue, memory problems, headache, soft stools, nausea, vomiting, or dry mouth — these resolve quickly if you stop taking it.
L-cysteine is generally well tolerated in food amounts, but high-dose supplement safety over time is not well studied. Selenium is safe in recommended amounts but becomes toxic at high doses; at excess levels it can cause hair loss, skin problems, nail changes, fatigue, nausea, and in rare cases serious organ damage.
Pregnancy and lactation data are limited: L-cysteine is likely safe in pregnancy, but L-glycine and selenium have insufficient safety data — talk with your doctor or pharmacist before use if you are pregnant or breastfeeding.
Meds to double-check
Moderate interaction found
Check before taking Redox if you're on clozapine (an antipsychotic) — L-glycine may reduce its effectiveness and worsen schizophrenia symptoms. If you take blood thinners, antiplatelet drugs, or warfarin, selenium may increase bleeding risk or interfere with clotting.
Diabetes medications, immunosuppressants, and barbiturates also have documented interactions. Oral contraceptives and niacin have minor interactions.
Discuss any of these medications with your doctor or pharmacist before starting.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
Redox is aimed at supporting cellular processes through amino acids and selenium, but evidence for its specific uses is incomplete or absent in our data. The bigger concern is drug interactions: if you take clozapine, diabetes medications, blood thinners, immunosuppressants, barbiturates, warfarin, oral contraceptives, or niacin, you need to check with your doctor or pharmacist before starting this product.
Even if you don't take these, run your full medication list through the tool on this page first.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jun 1, 2012.
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 Redox, straight from the product label.
| Brand | Douglas Laboratories |
|---|---|
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Jun 1, 2012 |
| DSLD ID | 9431 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Dairy Free, Sugar Free |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Redox by Douglas Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| L-Glycine | 150 mg | -- |
| L-Glutamic Acid | 150 mg | -- |
| L-Cysteine | 150 mg | -- |
| L-Glutathione | 250 mg | -- |
| Selenium | 40 mcg | 57% |
Other ingredients: Cellulose, Gelatin, Vegetable Stearate, Vitamin E
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.
FDA Statement of Identity
A Dietary Supplement
Formulation
This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
Suggested/Recommended/Usage/Directions
Suggested Usage: As a dietary supplement, adults take 2 capsules daily or as directed by physician.
Precautions
KEEP OUT OF REACH OF CHILDREN.
Tamper resistant package, do not use if outer seal is missing.
Storage
For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)
General
Formula #9300
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Redox by Douglas Laboratories 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 Redox by Douglas Laboratories
These are the 5 active ingredients this product is made of. Select any to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container30 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.
L-Glycine
Interacts with1 drug
Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep q...
L-Glycine monograph & interactionsL-Glutamic Acid
L-Cysteine
Interacts with86 drugs
L-cysteine is a sulfur-containing amino acid your body uses to make proteins and the antioxidant glutathione. Most people get enough from food, and su...
L-Cysteine monograph & interactionsL-Glutathione
Selenium
Interacts with321 drugs
Selenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who...
Selenium monograph & interactionsOther (inactive) ingredients: Cellulose, Gelatin, Vegetable Stearate, Vitamin E. These complete the product’s ingredient list but are not active constituents.
Redox by Douglas Laboratories Drug Interactions
HelloPharmacist Interaction Report
Redox by Douglas Laboratories contains ingredients that interact with medications.
Through its L-glycine, L-cysteine, and selenium content, this product has documented interactions with several drug types. The most serious is a moderate interaction: L-glycine may worsen schizophrenia symptoms and reduce clozapine effectiveness in patients taking that antipsychotic.
Read the full breakdown — every affected drug type, severity by severity
Selenium carries moderate interactions with blood thinners and antiplatelet drugs (increasing bleeding risk), immunosuppressants (potentially reducing their effectiveness), barbiturates (prolonging sedation), and warfarin specifically (interfering with blood-thinning activity). L-cysteine may increase the risk of low blood sugar (hypoglycemia) if combined with diabetes medications.
Selenium also has a minor interaction with oral contraceptives and niacin.
We could not check L-glutamic acid or L-glutathione — no interaction data are on file for these ingredients. Altogether, these interactions span 408 individual medications.
Before you start Redox, run your exact medications through the interaction checker on this page, and discuss the results with your doctor or pharmacist.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Redox?
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 Redox interact with 408 drugs. Click any drug to see the details.
3 of the 5 ingredients in Redox interact with drugs. Each result below shows which ingredient is responsible. Selenium L-Cysteine L-Glycine
6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + 6-mercaptopurine interactionAbciximabReoPro
How Abciximab interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Abciximab interactionAbrocitinibCibinqo
How Abrocitinib interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs, Immunosuppressants Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Abrocitinib interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Acarbose interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Acenocoumarol interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumBarbiturates Moderate
Interaction Summary
Theoretically, selenium might prolong the sedating effects of barbiturates.
Read the full Selenium + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumBarbiturates Moderate
Interaction Summary
Theoretically, selenium might prolong the sedating effects of barbiturates.
Read the full Selenium + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumBarbiturates Moderate
Interaction Summary
Theoretically, selenium might prolong the sedating effects of barbiturates.
Read the full Selenium + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, IbuprofenCombogesic
How Acetaminophen, Ibuprofen interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Acetaminophen, Ibuprofen interactionAcetohexamideDymelor
How Acetohexamide interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Acetohexamide interactionAcetylsalicylic AcidEntrophen
How Acetylsalicylic Acid interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Acetylsalicylic Acid interactionAdalimumabHumira
How Adalimumab interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab interactionAdalimumab-adazHyrimoz
How Adalimumab-adaz interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-adaz interactionAdalimumab-adbmCyltezo
How Adalimumab-adbm interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-adbm interactionAdalimumab-afzbAbrilada
How Adalimumab-afzb interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-afzb interactionAdalimumab-attoAmjevita
How Adalimumab-atto interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-atto interactionAdalimumab-bwwdHadlima
How Adalimumab-bwwd interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-bwwd interactionAdalimumab-fkjpHulio
How Adalimumab-fkjp interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Adalimumab-fkjp interactionAlbiglutideTanzeum
How Albiglutide interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Albiglutide interactionAlefaceptAmevive
How Alefacept interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Alefacept interactionAlemtuzumabCampath
How Alemtuzumab interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumImmunosuppressants Moderate
Interaction Summary
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
Read the full Selenium + Alemtuzumab interactionAlogliptinNesina
How Alogliptin interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Alogliptin interactionAlogliptin, MetforminKazano
How Alogliptin, Metformin interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Alogliptin, Metformin interactionAlogliptin, PioglitazoneOseni
How Alogliptin, Pioglitazone interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
L-cysteineAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Read the full L-cysteine + Alogliptin, Pioglitazone interactionAlteplase, TpaActilyse, Activase
How Alteplase, Tpa interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Alteplase, Tpa interactionAluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium HydroxideAscriptin Codeine #2
How Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aluminum Hydroxide, Aspirin, Codeine Phosphate, Magnesium Hydroxide interactionAluminum Hydroxide, Aspirin, Magnesium HydroxideAscriptin
How Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Read the full Selenium + Aluminum Hydroxide, Aspirin, Magnesium Hydroxide interactionAminophylline, Amobarbital, EphedrineAmesec
How Aminophylline, Amobarbital, Ephedrine interacts with Redox — through 1 ingredient. Tap an ingredient for the detail:
SeleniumBarbiturates Moderate
Interaction Summary
Theoretically, selenium might prolong the sedating effects of barbiturates.
Read the full Selenium + Aminophylline, Amobarbital, Ephedrine interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Redox 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.
Selenium
Anticoagulant/Antiplatelet Drugs
Selenium may have antiplatelet effects and may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
Clinical research suggests that taking selenium 10 mcg/kg/day can increase bleeding times by increasing prostacyclin production, which inhibits platelet activity. Other clinical research suggests that taking selenium 75 mcg daily, in combination with ascorbic acid 600 mg, alpha-tocopherol 300 mg, and beta-carotene 27 mg, reduces platelet aggregation.
Barbiturates
Theoretically, selenium might prolong the sedating effects of barbiturates.
Laboratory research suggests that selenium can inhibit the hepatic metabolism of barbiturates. Selenium seems to prolong the sedative effect of pentobarbital in animal models.
Immunosuppressants
Theoretically, selenium supplementation may reduce the effectiveness of immunosuppressant therapy.
In vitro research and preliminary clinical evidence suggests that selenium may stimulate the immune system.
Warfarin (Coumadin)
Theoretically, selenium might interfere with warfarin activity.
Animal research suggests that selenium can increase warfarin activity. Selenium might interact with warfarin by displacing it from albumin binding sites, reducing its metabolism in the liver, or by decreasing production of vitamin K-dependent clotting factors. Selenium can also prolong bleeding times in humans by increasing prostacyclin production, which inhibits platelet activity.
Contraceptive Drugs
Contraceptive drugs might increase levels of selenium, although the clinical significance of this effect is unclear.
Some research suggests that oral contraceptives increase serum selenium levels in women taking oral contraceptives; however, other research shows no change in selenium levels. It is suggested that an increase could be due to increased carrier proteins, indicating a redistribution of selenium rather than a change in total body selenium.
Niacin
Selenium might reduce the beneficial effects of niacin on high-density lipoprotein (HDL) 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 selenium, or to the combination. It also is not known whether it will occur in other patient populations.
L-Cysteine
Antidiabetes Drugs
Theoretically, taking L-cysteine supplements with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research suggests that L-cysteine can have hypoglycemic effects.
L-Glycine
Clozapine (Clozaril)
Theoretically, glycine might decrease the effectiveness of clozapine.
One small clinical study in patients with schizophrenia shows that adding glycine to clozapine therapy worsens symptoms of schizophrenia when compared with clozapine alone. The mechanism of this interaction is unclear.
Brand information
Manufacturer and brand details for Redox, from the product label.
Douglas Laboratories
See all Douglas Laboratories products- Name
- Douglas Laboratories
- City
- Pittsburgh
- State
- PA
- ZipCode
- 15205
Redox by Douglas Laboratories: Common Questions
Does Redox by Douglas Laboratories interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is Redox safe to take while pregnant or breastfeeding?
Can Redox help with my ADHD or memory?
What are the possible side effects of taking Redox?
Can I take this if I'm on a blood thinner like warfarin?
What is L-glutathione in this product supposed to do?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Redox 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 Redox’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Glycine
Interacts with 1 drugGlycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep quality, where early research is promisin...
Read the full Glycine monograph → Herb & supplement monographL-cysteine
Interacts with 86 drugsL-cysteine is a sulfur-containing amino acid your body uses to make proteins and the antioxidant glutathione. Most people get enough from food, and supplements are usually well tolerated, bu...
Read the full L-cysteine monograph → Herb & supplement monographSelenium
Interacts with 321 drugsSelenium is an essential trace mineral your body needs in small amounts for thyroid function, antioxidant defense, and immune health. Most people who eat a varied diet get enough, and supple...
Read the full Selenium monograph →Sources & How We Checked
Redox'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 43 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.
Glycine 5 references
- Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.. PubMed
- Potkin SG, Jin Y, Bunney BG, Costa J, Gulasekaram B. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.. PubMed
- Gusev EI, Skvortsova VI, Dambinova SA, et al. Neuroprotective effects of glycine for therapy of acute ischaemic stroke. Cerebrovasc Dis 2000;10:49-60. PubMed
- Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse effects of glycine ingestion at a high dose in human volunteers. Seikatsu Eisei. 2006; 50:27-32.
- Woods SW, Walsh BC, Hawkins KA, Miller TJ, Saksa JR, D'Souza DC, Pearlson GD, Javitt DC, McGlashan TH, Krystal JH. Glycine treatment of the risk syndrome for psychosis: report of two pilot studies. Eur Neuropsychopharmacol. 2013 Aug;23(8):931-40. PubMed
L-cysteine 2 references
- Dowlati Y, Maheux M, Meyer JH. The effect of oral L-cysteine on breast milk and plasma cysteine concentrations. Neuropsychiatr Dis Treat 2020;16:3163-3172.
- Lee S, Han KH, Nakamura Y, et al. Dietary L-cysteine improves the antioxidative potential and lipid metabolism in rats fed a normal diet. Biosci Biotechnol Biochem 2013;77(7):1430-4.
Selenium 36 references
- 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/.
- 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
- Trafikowska U, Zachara BA, Wiacek M, et al. Selenium supply and glutathione peroxidase activity in breastfed Polish infants. Acta Paediatr 1996;85:1143-5. PubMed
- Duffield-Lillico AJ, Slate EH, Reid ME, et al. Selenium supplementation and secondary prevention of nonmelanoma skin cancer in a randomized trial. J Natl Cancer Inst 2003;95:1477-81.. 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
- Schiavon R, Freeman GE, Guidi GC, et al. Selenium enhances prostacyclin production by cultured endothelial cells: possible explanation for increased bleeding times in volunteers taking selenium as a dietary supplement. Thromb Res 1984;34:389-96. PubMed
- Davila JC, Edds GT, Osuna O, Simpson CF. Modification of the effects of aflatoxin B1 and warfarin in young pigs given selenium. Am J Vet Res 1983;44:1877-83. DOI
- Heese HD, Lawrence MA, Dempster WS, Pocock F. Reference concentrations of serum selenium and manganese in healthy nulliparas. S Afr Med J 1988;73:163-5.
- Lloyd B, Lloyd RS, Clayton BE. Effect of smoking, alcohol and other factors on the selenium status of a healthy population. J Epidemiol Commun Health 1983;37:213-7. PubMed
- Capel ID, Jenner M, Williams DC, et al. The effect of prolonged oral contraceptive steroid use on erythrocyte glutathione peroxidase activity. J Steroid Biochem 1981;14:729-32. PubMed
- Contempre B, Dumont JE, Ngo B, et al. Effect of selenium supplementation in hypothyroid subjects of an iodine and selenium deficient area: the possible danger of indiscriminate supplementation of iodine-deficient subjects with selenium. J Clin Endocrinol PubMed
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