14 Zinc Ingredients & Drug Interactions
by Somaplex
What is this page for?
First and foremost: checking 14 Zinc 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
14 Zinc is a dietary supplement by Somaplex with 1 active ingredient. Its ingredients are commonly taken for zinc deficiency, immune support, cold symptoms.Based on those ingredients, 67 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Zinc Sulfate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against 14 Zinc by Somaplex
Ask about any prescription or over-the-counter medication and we check it for interactions with 14 Zinc by Somaplex — 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 14 Zinc by Somaplex
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
This product contains one active ingredient: zinc sulfate, a form of zinc your body needs for immune function, wound healing, and protein metabolism. Somaplex 14 Zinc is a liquid formulation, which makes it easy to swallow or mix.
The inactive ingredients are water and ethyl alcohol, which keep the supplement in liquid form.
Does it work?
Strong evidence
Zinc is effective for treating zinc deficiency itself. It's likely effective for Wilson disease, a rare genetic condition where copper builds up in the body.
For other uses — acne, a rare skin condition called acrodermatitis enteropathica, age-related macular degeneration, and diabetes — the evidence is classified as possibly effective, meaning there's some supportive research but it's not yet definitive.
How safe is it?
Well-documented data
Zinc is generally well tolerated at recommended doses. Amounts within your daily needs are considered acceptable; avoid high doses without a doctor's advice.
The tolerable upper intake level for adults is 40 mg per day — doses above this can cause problems over time. At recommended doses, common side effects include abdominal cramps, diarrhea, nausea, vomiting, and a metallic taste, especially if taken on an empty stomach.
There is also concern that very high long-term doses above 40 mg daily might increase the risk of copper deficiency, which can lead to anemia and low white blood cell counts. Pregnancy safety is mixed: zinc is rated likely safe in pregnancy for some uses but likely unsafe in others — talk to your doctor or pharmacist about whether it's right for you if you're pregnant or breastfeeding.
Zinc is rated likely safe during breastfeeding.
Meds to double-check
Moderate interaction found
Before taking this product, check your medications if you use quinolone antibiotics (like ciprofloxacin), tetracycline antibiotics (like doxycycline), cephalexin (Keflex), penicillamine (Cuprimine, Depen), or HIV medications including ritonavir, integrase inhibitors, or bictegravir/emtricitabine/tenofovir alafenamide. Also let your pharmacist know if you take cisplatin or any other medications — zinc may need to be dosed separately, usually 2 to 6 hours apart from these drugs.
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.
Somaplex 14 Zinc makes sense if you have a confirmed zinc deficiency or Wilson disease, or if you're exploring zinc for acne or another possible use under your doctor's guidance. If you take antibiotics, HIV medications, or other prescription drugs, check with your pharmacist first — you'll likely need to separate doses by several hours.
Stick to recommended amounts and talk to your pharmacist if you're pregnant or nursing.
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 Sep 25, 2013.
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 14 Zinc, straight from the product 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 14 Zinc by Somaplex, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Zinc Sulfate | 0.586 mcg | -- |
Other ingredients: Water, ethyl alcohol
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: Adults take 20 drops on the tongue or rub into inner elbow two to three times daily. Children receive 1/2 or less of the adult amount.
Precautions
Tamper Evident: Use this product only if tamper evident ring has not been broken away from base of cap.
General
2390
General Statements
IONIZED TRACE ELEMENTS
14
>>NESTMANN<<
Made in Germany Nestmann Pharma Zapfendorf/Bamberg
FDA Statement of Identity
SUPPLEMENT
Seals/Symbols
MPI
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14 Zinc by Somaplex 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 14 Zinc by Somaplex
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size0.3 mL Dosage formLiquid Servings per container49 Amounts shown are per serving.
Zinc Sulfate
Interacts with67 drugs
Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but suppleme...
Zinc Sulfate monograph & interactionsOther (inactive) ingredients: Water, Ethyl alcohol. These complete the product’s ingredient list but are not active constituents.
14 Zinc by Somaplex Drug Interactions
HelloPharmacist Interaction Report
Somaplex 14 Zinc is a single-ingredient liquid supplement containing zinc sulfate, and it does interact with a number of medications.
The most serious interactions are Moderate in severity and involve several antibiotic classes: quinolone antibiotics (like ciprofloxacin and levofloxacin), tetracycline antibiotics (like doxycycline), cephalexin (Keflex), and penicillamine (Cuprimine, Depen). Zinc forms complexes with these drugs in your gut, blocking absorption of both the zinc and the antibiotic or medication, which can reduce how well they work — sometimes by 25% to 40% for some drugs.
Read the full breakdown — every affected drug type, severity by severity
Zinc also has documented Moderate interactions with HIV medications, including ritonavir (Norvir), integrase inhibitors (such as dolutegravir), and the combination product bictegravir/emtricitabine/tenofovir alafenamide (Biktarvy). Additionally, there's a theoretical Moderate concern that zinc might interfere with cisplatin (Platinol-AQ), a chemotherapy drug, though this is not yet confirmed in humans.
Altogether, these interactions span 65 individual medications. If you take any of these drug types, you'll want to separate your doses — typically at least 2 to 6 hours apart, depending on the medication.
Use the medication checker on this page to look up your exact prescriptions before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against 14 Zinc?
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 14 Zinc interact with 67 drugs. Click any drug to see the details.
1 of the 1 ingredient in 14 Zinc interact with drugs. Each result below shows which ingredient is responsible. Zinc Sulfate
TigecyclineTygacil
How Tigecycline interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateQuinolone Antibiotics, Tetracycline Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc Sulfate + Tigecycline interactionTrovafloxacinTrovan, Trovan Injection
How Trovafloxacin interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateQuinolone Antibiotics Moderate
Interaction Summary
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Read the full Zinc Sulfate + Trovafloxacin interactionEmtricitabine, TenofovirTruvada
How Emtricitabine, Tenofovir interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc Sulfate + Emtricitabine, Tenofovir interactionAmilorideAmilamont, Midamor
How Amiloride interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateAmiloride (midamor) Minor
Interaction Summary
Amiloride can modestly reduce zinc excretion and increase zinc levels.
Read the full Zinc Sulfate + Amiloride interactionAmiloride, HydrochlorothiazideAmil-Co, Amilzide, Moduret 25, Moduretic
How Amiloride, Hydrochlorothiazide interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateAmiloride (midamor) Minor
Interaction Summary
Amiloride can modestly reduce zinc excretion and increase zinc levels.
Read the full Zinc Sulfate + Amiloride, Hydrochlorothiazide interactionAtazanavirReyataz
How Atazanavir interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateAtazanavir (reyataz) Minor
Interaction Summary
Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Read the full Zinc Sulfate + Atazanavir interactionAtazanavir, CobicistatEvotaz
How Atazanavir, Cobicistat interacts with 14 Zinc — through 1 ingredient. Tap an ingredient for the detail:
Zinc SulfateAtazanavir (reyataz) Minor
Interaction Summary
Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Read the full Zinc Sulfate + Atazanavir, Cobicistat interactionEach ingredient & the kinds of drugs it affects
For each ingredient in 14 Zinc 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.
Zinc Sulfate
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after zinc containing products.
Cephalexin (Keflex)
Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
A pharmacokinetic study shows that zinc sulfate 250 mg taken concomitantly with cephalexin 500 mg decreases peak levels of cephalexin by 31% and reduces the exposure to cephalexin by 27%. Also, taking zinc sulfate 3 hours before cephalexin decreases peak levels of cephalexin by 11% and reduces the exposure to cephalexin by 18%. By decreasing cephalexin levels, zinc might increase the risk of treatment failure. This effect does not occur when zinc is taken 3 hours after the cephalexin dose. To avoid an interaction, advise patients take zinc sulfate 3 hours after taking cephalexin.
Cisplatin (Platinol-Aq)
Theoretically, zinc might interfere with the therapeutic effects of cisplatin.
Animal research suggests that zinc stimulates tumor cell production of the protein metallothionein, which binds and inactivates cisplatin. It is not known whether zinc supplements or high dietary zinc intake can cause clinically significant interference with cisplatin therapy. Cisplatin might also increase zinc excretion.
Integrase Inhibitors
Theoretically, taking zinc along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Zinc is a divalent cation. Pharmacokinetic studies have shown that other divalent cations such as calcium and iron can decrease blood levels of the integrase inhibitor dolutegravir through chelation.
Penicillamine (Cuprimine, Depen)
Zinc might reduce the levels and clinical effects of penicillamine.
By forming an insoluble complex with penicillamine, zinc interferes with penicillamine absorption and activity. Zinc supplements reduce the efficacy of low-dose penicillamine (0.5-1 gram/day), but do not seem to affect higher doses (1-2.75 gram/day), provided dosing times are separated. Advise patients to take zinc and penicillamine at least 2 hours apart.
Quinolone Antibiotics
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Quinolones form complexes with zinc in the gastrointestinal tract, reducing absorption of both the quinolone and zinc if taken at the same time. Advise patients to take these drugs at least 2 hours before, or 4-6 hours after, zinc supplements.
Ritonavir (Norvir)
Zinc modestly reduces levels of ritonavir.
Clinical research shows that zinc might reduce serum ritonavir levels by chelating with ritonavir in the gut and preventing its absorption. In patients with HIV, ritonavir is taken with atazanavir to prevent the metabolism and increase the effects of atazanavir. A pharmacokinetic study shows that, in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate (Solvazinc tablets) 125 mg as a single dose or as multiple daily doses for 2 weeks reduces plasma levels of ritonavir by about 16%. However, atazanavir levels still remains high enough to prevent HIV virus replication. Therefore, the decrease in ritonavir levels is not likely to be clinically significant.
Tetracycline Antibiotics
Zinc might reduce levels of tetracycline antibiotics.
Tetracyclines form complexes with zinc in the gastrointestinal tract, which can reduce absorption of both the tetracycline and zinc when taken at the same time. Taking zinc sulfate 200 mg with tetracycline reduces absorption of the antibiotic by 30% to 40%. Demeclocycline and minocycline cause a similar interaction. However, doxycycline does not seem to interact significantly with zinc. Advise patients to take tetracyclines at least 2 hours before, or 4-6 hours after, zinc supplements to avoid any interactions.
Amiloride (Midamor)
Amiloride can modestly reduce zinc excretion and increase zinc levels.
Clinical research shows that amiloride can reduce urinary zinc excretion, especially at doses of 10 mg per day or more. This zinc-sparing effect can help to counteract zinc losses caused by thiazide diuretics, but it is unlikely to cause zinc toxicity at usual amiloride doses. The other potassium-sparing diuretics, spironolactone (Aldactone) and triamterene (Dyrenium), do not seem to have a zinc-sparing effect.
Atazanavir (Reyataz)
Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Clinical research shows that zinc might decrease serum atazanavir levels by chelating with atazanavir in the gut and preventing its absorption. Although a single dose of zinc sulfate (Solvazinc tablets) 125 mg orally does not affect atazanavir concentrations in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate 125 mg daily for 2 weeks reduces plasma levels of atazanavir by about 22% in these patients. However, despite this decrease, atazanavir levels still remain at high enough concentrations for the prevention of HIV virus replication.
Brand information
Manufacturer and brand details for 14 Zinc, from the product label.
14 Zinc by Somaplex: Common Questions
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Where does this information come from?
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if 14 Zinc 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 14 Zinc’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
14 Zinc'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 88 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.
Zinc 88 references
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- Blondeau JM. Expanded activity and utility of the new fluoroquinolones: a review. Clin Ther 1999;21:3-40. PubMed
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- 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.
- Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss. AREDS report no. 8. Arch Oph
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- Kondo Y, Yamagata K, Satoh M, et al. Optimal administration schedule of cisplatin for bladder tumor with minimal induction of metallothionein. J Urol 2003;170:2467-70. PubMed
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- McBride K, Slotnick B, Margolis FL. Does intranasal application of zinc sulfate produce anosmia in the mouse? An olfactometric and anatomical study. Chem Senses 2003;28:659-70. PubMed
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- Tisdall FF, Brown A, Defries RD. Persistent anosmia following zinc sulfate nasal spraying. JPed 1938;18:60-2. DOI
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- GlaxoSmithKline Consumer Advisory. GlaxoSmithKline (GSK) warns about a potential health risk associated with long-term, excessive use of GSK's zinc-containing denture adhesives Super Polygrip Original, Ultra Fresh and Extra Care. February 18, 2010. Availa
- Science M, Johnstone J, Roth DE, et al. Zinc for the treatment of the common cold: a systematic review and meta-analysis of randomized controlled trials. CMAJ 2012;184:E551-61. PubMed
- Castilla-Higuero, L., Romero-Gomez, M., Suarez, E., and Castro, M. Acute hepatitis after starting zinc therapy in a patient with presymptomatic Wilson's disease. Hepatology 2000;32(4 Pt 1):877. PubMed
- Sharquie, K. E., Najim, R. A., Farjou, I. B., and Al Timimi, D. J. Oral zinc sulphate in the treatment of acute cutaneous leishmaniasis. Clin.Exp.Dermatol. 2001;26(1):21-26. PubMed
- Dreno, B., Moyse, D., Alirezai, M., Amblard, P., Auffret, N., Beylot, C., Bodokh, I., Chivot, M., Daniel, F., Humbert, P., Meynadier, J., and Poli, F. Multicenter randomized comparative double-blind controlled clinical trial of the safety and efficacy of
- Moore, R. Bleeding gastric erosion after oral zinc sulphate. Br.Med J 3-25-1978;1(6115):754. PubMed
- Jafek, B. W., Linschoten, M. R., and Murrow, B. W. Anosmia after intranasal zinc gluconate use. Am J Rhinol. 2004;18(3):137-141. DOI
- Simonart, T. and de, Maertelaer, V. Systemic treatments for cutaneous warts: a systematic review. J Dermatolog.Treat. 2012;23(1):72-77. PubMed
- Cochran, R. J., Tucker, S. B., and Flannigan, S. A. Topical zinc therapy for acne vulgaris. Int.J Dermatol. 1985;24(3):188-190. DOI
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- Fjellner, B. Drug-induced lupus erythematosus aggravated by oral zinc therapy. Acta Derm.Venereol. 1979;59(4):368-370. DOI
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- DeCook, C. A. and Hirsch, A. R. Anosmia due to inhalational zinc: a case report (abstract). Chem Senses 2000;25:659.
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DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.
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