Gammadyn S Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Gammadyn S 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
Gammadyn S is a dietary supplement by UNDA Gammadyn with 1 active ingredient. Its ingredients are commonly taken for acne and oily skin, rosacea, seborrheic dermatitis and dandruff.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of Gammadyn S by UNDA Gammadyn
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
UNDA Gammadyn S is a liquid supplement with one active ingredient: sulfur. It also contains purified water and glucose as inactive ingredients (fillers and carriers).
Sulfur is a mineral that has been studied for skin and respiratory health.
Does it work?
Moderate evidence
The evidence is mixed. Sulfur is rated possibly effective for scabies and dandruff — meaning there's some supportive research, but it's not conclusive.
For acne, allergic rhinitis (hay fever), COPD, and the common cold, the evidence we hold is insufficient to rate it, so we don't know yet whether it works for those uses.
How safe is it?
Well-documented data
Topical sulfur is generally well tolerated in concentrations up to 10%, though it can cause skin dryness, irritation, and itching. Oral sulfur — which applies to this liquid supplement — is less studied and carries different risks.
Reported side effects include diarrhea from intestinal irritation. One case report documented metabolic acidosis (a dangerous blood chemistry shift) in a woman who consumed a very large amount of sulfur over several days, though her underlying diabetes and kidney problems likely contributed.
Avoid applying this product near the breast. The safety data advises discussing use with your doctor or pharmacist, especially if you have kidney disease, diabetes, or digestive sensitivities.
Meds to double-check
No known interactions
No interactions are documented in our data for the sulfur in this product. However, no documented interactions are not a guarantee none exist, and interaction research for oral sulfur supplements may be incomplete.
Before adding this to your routine, confirm with your own doctor or pharmacist that it won't interfere with your specific medications.
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. No medication interactions are currently documented, and safety information is well characterized.
UNDA Gammadyn S may be worth considering if you're exploring sulfur for scabies or dandruff, where the evidence is more developed. If you're thinking about it for another condition on the label — acne, hay fever, COPD, or colds — the evidence isn't established yet.
Talk with your own doctor or pharmacist before starting, particularly if you have kidney or blood sugar concerns.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Feb 23, 2016.
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 Gammadyn S, straight from the product label.
| Brand | UNDA Gammadyn |
|---|---|
| Barcode (UPC) | 88319631400 |
| Net contents | 30 Ampoule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 23, 2016 |
| DSLD ID | 56250 |
| Product type | Mineral |
| Supplement form | Liquid |
| Dietary claims / uses | All Other |
| 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 Gammadyn S by UNDA Gammadyn, sourced from the NIH Dietary Supplement Label Database.
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.
Precautions
Safety-sealed for your protection and for product freshness. Do not use if ampoule is broken.
Risk Information: If symptoms persist or worsen, consult your healthcare practitioner.
If you are pregnant or breastfeeding, do not use, unless directed by your healthcare practitioner.
Storage
Store in a cool, dry place.
Seals/Symbols
Seroyal
UNDA
Formula
Sulfur
FDA Statement of Identity
Oligo-Element Supplement
Suggested/Recommended/Usage/Directions
Recommended Dose: Adults (19 years and older): Take one ampoule one to two times daily, or as recommended by your healthcare practitioner. Squeeze contents directly into mouth. Use for one to two months, or as recommended by your healthcare practitioner.
General Statements
1 {pull apart one ampoule} 2 {twist open} 3 {squeeze contents directly into mouth}
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Gammadyn S by UNDA Gammadyn 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 Gammadyn S by UNDA Gammadyn
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size0.07 fl. Oz. Dosage formLiquid Servings per container30 Amounts shown are per serving.
Sulfur
No knowninteractions
Sulfur is a mineral used mainly in topical skin products for acne, rosacea, dandruff, and certain skin infections, and has a long history in dermatolo...
Sulfur monograph & interactionsOther (inactive) ingredients: Purified Water, Glucose. These complete the product’s ingredient list but are not active constituents.
Gammadyn S by UNDA Gammadyn Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Gammadyn S. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for Gammadyn S, from the product label.
UNDA Gammadyn
See all UNDA Gammadyn products- Name
- Seroyal USA Inc.
- City
- Wood Dale
- State
- IL
- Phone Number
- 1-888-737-6925
Gammadyn S by UNDA Gammadyn: Common Questions
Does Gammadyn S by UNDA Gammadyn interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is sulfur safe to take by mouth?
Can I use this if I'm pregnant or breastfeeding?
Does sulfur really work for scabies and dandruff?
Can this product irritate my skin?
What are the inactive ingredients in this product?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Gammadyn S 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 Gammadyn S’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Gammadyn S'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 17 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.
Sulfur 17 references
- Blum, J. E. and Coe, F. L. Metabolic acidosis after sulfur ingestion. N Engl J Med 1977;297(16):869-70. PubMed
- Roos, T. C., Alam, M., Roos, S., Merk, H. F., and Bickers, D. R. Pharmacotherapy of ectoparasitic infections. Drugs 2001;61(8):1067-88. PubMed
- Diaz, M., Cazorla, D., and Acosta, M. [Efficacy, safety and acceptability of precipitated sulphur petrolatum for topical treatment of scabies at the city of Coro, Falcon State, Venezuela]. Rev Invest Clin 2004;56(5):615-22.
- Schmiedel, V. and Klein, P. A complex homeopathic preparation for the symptomatic treatment of upper respiratory infections associated with the common cold: An observational study. Explore (NY) 2006;2(2):109-14. PubMed
- Weiser, M., Gegenheimer, L. H., and Klein, P. A randomized equivalence trial comparing the efficacy and safety of Luffa comp.-Heel nasal spray with cromolyn sodium spray in the treatment of seasonal allergic rhinitis. Forsch Komplementarmed 1999;6(3):142- PubMed
- FDA OTC ingredients list, April 2010. Available at: www.fda.gov/downloads/AboutFDA/CentersOffices/CDER/UCM135691.pdf (accessed 2/7/15).
- Leyden, J. J., McGinley, K. J., Mills, O. H., Kyriakopoulos, A. A., and Kligman, A. M. Effects of sulfur and salicylic acid in a shampoo base in the treatment of dandruff: a double-blind study using corneocyte counts and clinical grading. Cutis 1987;39(6)
- Trumbore, M. W., Goldstein, J. A., and Gurge, R. M. Treatment of papulopustular rosacea with sodium sulfacetamide 10%/sulfur 5% emollient foam. J Drugs Dermatol 2009;8(3):299-304.
- Pelle, M. T., Crawford, G. H., and James, W. D. Rosacea: II. Therapy. J Am Acad Dermatol 2004;51:499-512.
- Blom I, Hornmark AM. Topical treatment with sulfur 10 per cent for rosacea. Acta Derm Venereol 1984;64:358-9. DOI
- Gupta, A. K. and Nicol, K. The use of sulfur in dermatology. J Drugs Dermatol 2004;3(4):427-31.
- Akhavan, A. and Bershad, S. Topical acne drugs: review of clinical properties, systemic exposure, and safety. Am J Clin Dermatol 2003;4(7):473-92.
- Wilkinson RD, Adam JE, Murray JJ, Craig GE. Benzoyl peroxide and sulfur: foundation for acne management. Can Med Assoc J 1966;95(1):28-9.
- Food and Drug Administration. Classification of benzoyl peroxide as safe and effective and revision of labeling to drug facts format; topical acne drug products for over-the-counter human use; final rule. Federal Register 2010;75(42):9767-77.
- Lin, A. N., Reimer, R. J., and Carter, D. M. Sulfur revisited. J Am Acad Dermatol 1988;18(3):553-8.
- Goszcz, A., Kostka-Trabka, E., Grodzinska, L., et al. [The effect of treatment with sulphur water from the spring in Wieslaw in Busko-Solec on levels of lipids, the fibrinolytic system and thrombogenic platelet function in patients with arteriosclerosis].
- Contoli M, Gnesini G, Forini G, et al. Reducing agents decrease the oxidative burst and improve clinical outcomes in COPD patients: a randomised controlled trial on the effects of sulphurous thermal water inhalation. ScientificWorldJournal. 2013 Dec 23;20 PubMed
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