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Dietary supplement

Reduced Glutathione Complex 50 mg Orange Flavored Ingredients & Drug Interactions

by Source Naturals

Reduced Glutathione Complex 50 mg Orange Flavored label
See full label image
Lozenge Category: Other Combinations
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Reduced Glutathione Complex 50 mg Orange Flavored 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

Reduced Glutathione Complex 50 mg Orange Flavored is a dietary supplement by Source Naturals with 3 active ingredients. Its ingredients are commonly taken for correcting molybdenum deficiency, supporting enzyme function, general nutritional supplementation.Based on those ingredients, 20 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Riboflavin. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals

Ask about any prescription or over-the-counter medication and we check it for interactions with Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals

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

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 3 of its 3 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This lozenge contains 3 active ingredients. Molybdenum is a trace mineral that helps your body process certain proteins and waste products.

Riboflavin (vitamin B2) supports energy production and acts as an antioxidant. L-glutathione, Reduced is an amino acid compound thought to support antioxidant defenses.

The lozenges also contain inactive ingredients like sorbitol and mannitol for sweetness and texture.

Does it work?

Insufficient 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
Insufficient

There isn't enough reliable clinical evidence to rate this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: liver detoxification and free radical scavenging.
  • We looked for evidence on: Liver disease, Oxidative stress, Antioxidant support, Glutathione deficiency.
  • The closest evidence on file: Molybdenum is rated "Insufficient Reliable Evidence To Rate" for Liver disease (Natural Medicines).

The evidence on this product's overall effectiveness isn't established in the data we hold. Molybdenum is likely effective for preventing or treating molybdenum deficiency, though deficiency is rare in people eating normal diets.

For other conditions listed — acne, iron-deficiency anemia, asthma, osteoporosis, and esophageal cancer — the evidence for molybdenum is insufficient. We have no effectiveness ratings for riboflavin or L-glutathione, Reduced in our data.

The evidence, ingredient by ingredient Molybdenum Riboflavin

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Riboflavin is very well tolerated; your body excretes excess in urine. The most common side effects at higher doses are nausea and bright yellow urine — both harmless and dose-related.

Molybdenum is safe at dietary amounts, but high-dose supplements are rarely necessary and can cause problems; stay under 2 mg per day unless your doctor advises otherwise. One rare case linked very high molybdenum doses to serious neurological effects, so don't exceed recommended amounts.

Riboflavin is considered likely safe in pregnancy and breastfeeding at recommended doses; check with your provider before using high-dose supplements. We have no pregnancy or breastfeeding safety data on file for molybdenum or L-glutathione, Reduced — talk to your doctor or pharmacist for personalized advice.

Side effects, ingredient by ingredient Molybdenum Riboflavin

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?
  • 1 of the 2 matched ingredients can interact with medications — Riboflavin.
  • The most serious interaction on file is rated Moderate.
  • For scale: 20 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.

Tetracycline antibiotics are the main medications to double-check — riboflavin may reduce their effectiveness, though this hasn't been confirmed in humans. No other interactions are documented for the ingredients we could check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with insufficient evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product may appeal to you if you're looking for antioxidant support or have molybdenum deficiency — but deficiency is uncommon in people eating regular food. If you take tetracycline antibiotics (like doxycycline), check with us first.

Anyone on prescription medications should verify their exact drugs with the search tool on this page before starting.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 2 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Aug 23, 2023.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Reduced Glutathione Complex 50 mg Orange Flavored, straight from the product label.

Brand Source Naturals
Barcode (UPC) 021078013044
Net contents 50 Lozenge(s)
Market status On market
Date entered into DSLD Aug 23, 2023
DSLD ID 296165
Product type Other Combinations
Supplement form Lozenge
Dietary claims / uses 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 Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals, 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:
1 Lozenge(s)
Maximum serving Sizes:
1 Lozenge(s)
Servings per container
50
UPC/BARCODE
021078013044
IngredientAmount% DV
Total Carbohydrates1 Gram(s)1%
Molybdenum120 mcg160%
L-Glutathione, Reduced50 mg--
Riboflavin1.6 mg94%

Other ingredients: Sorbitol, Mannitol, Orange Flavor, Natural, Magnesium Stearate

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.
FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: 1 lozenge 1 to 3 times daily. For best results, allow to dissolve in the mouth before swallowing.

Precautions

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Formula

Reduced Glutathione Complex contains glutathione (GSH), a key element of the liver's detoxifying process, and also the precursor for glutathione peroxidase, a major free radical scavenging enzyme. Recent scientific research indicates that molybdenum, a trace mineral that activates the enzymes aldehyde oxidase and sulfite oxidase, may provide necessary nutritional support for chemically sensitive individuals. Coenzymated Vitamin B-12 (riboflavin) is the precursor for FAD, a coenzyme that recycles used GSH.

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.

Brand IP Statement(s)

Copyright Source Naturals, Inc.

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

See for yourself

Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals label

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

Reduced Glutathione Complex 50 mg Orange Flavored 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 Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Lozenge(s) Dosage formLozenge Servings per container50 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.

Molybdenum

No known
interactions
120 mcg per serving Form: Molybdenum Chelate

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so s...

Molybdenum monograph & interactions

L-Glutathione, Reduced

50 mg per serving

Riboflavin

Interacts with
20 drugs
1.6 mg per serving Form: Flavin Mononucleotide

Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally...

Riboflavin monograph & interactions

Other (inactive) ingredients: Sorbitol, Mannitol, Orange Flavor, Natural, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals Drug Interactions

Want to check YOUR meds against Reduced Glutathione Complex 50 mg Orange Flavored?

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
20Drugs
20 Moderate

Ingredients driving the most interactions

Riboflavin 20

Individual Drug Interactions

The ingredients in Reduced Glutathione Complex 50 mg Orange Flavored interact with 20 drugs. Click any drug to see the details.

1 of the 3 ingredients in Reduced Glutathione Complex 50 mg Orange Flavored interact with drugs. Each result below shows which ingredient is responsible. Riboflavin

Each ingredient & the kinds of drugs it affects

For each ingredient in Reduced Glutathione Complex 50 mg Orange Flavored with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Riboflavin1 drug type · 20 drugs

Tetracycline Antibiotics

Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.
In vitro research suggests that riboflavin may inhibit the potency of tetracycline antibiotics. It is not clear if this effect is clinically significant, as this interaction has not been reported in humans.

Likelihood Possible Evidence D
Riboflavin full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Reduced Glutathione Complex 50 mg Orange Flavored, from the product label.

Source Naturals

Name
Source Naturals, Inc.
Street Address
P. O. Box 2118
City
Santa Cruz
State
CA
ZipCode
95062
Web Address
www.sourcenaturals.com
Pharmacist Counseling Corner

Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals: Common Questions

Does Reduced Glutathione Complex 50 mg Orange Flavored by Source Naturals interact with any medications?
Yes. Based on its ingredients, Reduced Glutathione Complex 50 mg Orange Flavored has a known interaction with 20 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Reduced Glutathione Complex 50 mg Orange Flavored contains 3 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.
Will this interact with my tetracycline antibiotic?
Riboflavin in this product may theoretically reduce how well tetracycline antibiotics work, but this effect hasn't actually been reported in people — it's mostly an in vitro concern. Still, it's worth mentioning to your pharmacist so they can watch for any loss of effectiveness.
What does molybdenum do?
Molybdenum is a trace mineral your body uses to process proteins and handle certain waste products. It's likely effective for preventing or treating actual molybdenum deficiency, though deficiency is very rare if you eat a normal diet.
Is riboflavin safe at the amount in this lozenge?
Yes, riboflavin is very well tolerated. Excess is simply removed in your urine. At higher doses you might notice nausea or bright yellow urine — both harmless and dose-related — but the amount in this product is likely much lower.
Can I take this while pregnant or breastfeeding?
Riboflavin is likely safe during pregnancy and breastfeeding at recommended amounts, though check with your provider before high-dose supplements. We don't have safety data on file for molybdenum or L-glutathione, Reduced in pregnancy or breastfeeding — talk to your doctor or pharmacist for guidance tailored to you.
What are the side effects?
Riboflavin is generally well tolerated. At higher doses, some people report dose-related nausea and bright yellow urine. Molybdenum is safe at normal food amounts; very high doses are rarely needed and can cause problems, so stick to the recommended upper limit of 2 mg per day.
Does this really work as an antioxidant?
We don't have effectiveness data in our records for this product as a whole or for L-glutathione, Reduced. The evidence on riboflavin and molybdenum for antioxidant or general wellness purposes isn't established in the data we hold.

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

Not sure if Reduced Glutathione Complex 50 mg Orange Flavored is safe with your meds?

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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.

Reduced Glutathione Complex 50 mg Orange Flavored label
Go deeper

The Full Monographs Behind Reduced Glutathione Complex 50 mg Orange Flavored’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Molybdenum

Molybdenum is an essential trace mineral your body needs in tiny amounts to help certain enzymes work. Most people get enough from a normal diet, so supplements are rarely needed unless a do...

Read the full Molybdenum monograph → Herb & supplement monograph

Riboflavin

Interacts with 20 drugs

Riboflavin (vitamin B2) is an essential nutrient your body needs to turn food into energy and to keep skin, eyes, and nerves healthy. It is generally very safe at typical doses, and the stro...

Read the full Riboflavin monograph →
Sources

Sources & How We Checked

Reduced Glutathione Complex 50 mg Orange Flavored'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 13 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.

Molybdenum 8 references
  1. Chan S, Gerson B, Subramaniam S. The role of copper, molybdenum, selenium, and zinc in nutrition and health. Clin Lab Med 1998;18:673-85. DOI
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
  3. Rajagopalan KV. Molybdenum: an essential trace element in human nutrition. Annu Rev Nutr 1988;8:401-27. PubMed
  4. Selden AI, Berg NP, Soderbergh A, Bergstrom BE. Occupational molybdenum exposure and a gouty electrician. Occup Med (Lond) 2005;55:145-8. PubMed
  5. Al-Saleh E, Nandakumaran M, Al-Shammari M, Al-Harouny A. Maternal-fetal status of copper, iron, molybdenum, selenium and zinc in patients with gestational diabetes. J Matern Fetal Neonatal Med 2004;16:15-21. PubMed
  6. Koster R, Vieluf D, Kiehn M, et al. Nickel and molybdenum contact allergies in patients with coronary in-stent restenosis. Lancet 2000;356:1895-7. PubMed
  7. Vyskocil A, Viau C. Assessment of molybdenum toxicity in humans. J Appl Toxicol 1999;19:185-92. DOI
  8. Momcilovic, B. A case report of acute human molybdenum toxicity from a dietary molybdenum supplement--a new member of the "Lucor metallicum" family. Arh.Hig.Rada Toksikol. 1999;50(3):289-297. DOI

See these in context on the Molybdenum monograph →

Riboflavin 5 references
  1. Schoenen J, Jacquy J, Lenaerts M. Effectiveness of high-dose riboflavin in migraine prophylaxis. A randomized controlled trial. Neurology 1998;50:466-70. PubMed
  2. Yates AA, Schlicker SA, Suitor CW. Dietary reference intakes: The new basis for recommendations for calcium and related nutrients, B vitamins, and choline. J Am Diet Assoc 1998;98:699-706. PubMed
  3. Leeson LJ, Weidenheimer JF. Stability of tetracycline and riboflavin. J Pharm Sci. 1969;58(3):355-7. PubMed
  4. MacLennan, S. C., Wade, F. M., Forrest, K. M., Ratanayake, P. D., Fagan, E., and Antony, J. High-dose riboflavin for migraine prophylaxis in children: a double-blind, randomized, placebo-controlled trial. J Child Neurol. 2008;23(11):1300-1304.
  5. Dietary reference intakes (DRIs): estimated average requirements. Food and Nutrition Board, Institute of Medicine, National Academics. https://www.nal.usda.gov/sites/default/files/fnic_uploads//recommended_intakes_individuals.pdf Accessed July 24, 2017.

See these in context on the Riboflavin monograph →

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

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