Medication interaction hub

What Supplements Interact with Nafcillin Sodium?

Nafcillin Sodium brand name: Unipen. Every interaction below applies to the brands too.

75 Interactions 3 Major 61 Moderate 11 Minor
Curated & coded by · Clinical Pharmacist · Updated October 5, 2026

Drug–supplement interaction data sourced from Natural Medicines Pro, the licensed clinical database from TRC Healthcare / Therapeutic Research, with additional analysis by the HelloPharmacist Pharmacist Team. Our sources · Editorial policy

What is this page for?

One answer, for one medication: what supplements and herbal products interact with Nafcillin Sodium? Every vitamin, herb, and supplement ingredient we’ve checked against it is on this page, ranked by severity, each linking to the full report for that exact pair.

This page covers supplement interactions only — to check Nafcillin Sodium against your other medications, use the drug–drug interaction checker. Educational information from our licensed clinical databases, not medical advice. Our editorial policy

HelloPharmacist Bottom Line
Our Pharmacist Explains
What is this? The interaction data in the HelloPharmacist supplement database is licensed from Natural Medicines Pro by TRC Healthcare (Therapeutic Research). HelloPharmacist pharmacists often add our own analysis and context on top of that licensed data — such as this Bottom Line summary and the notes on individual interaction pages — and any such commentary is noted as ours.

Nafcillin sodium (Unipen) is a penicillin antibiotic for serious staph infections, often given by IV, so anything that weakens it or piles strain on the kidneys carries real weight. Three of the 75 supplements on this page rate major, and those come first: Siberian cocklebur and asarabacca can each damage the kidneys, and activated charcoal can soak up nafcillin in the gut, cutting how much of the drug actually reaches your blood.

The 61 moderate and 11 minor entries mostly repeat milder versions of a few ideas. The biggest cluster, more than two dozen probiotic strains, gets killed off by the antibiotic itself, which mainly wastes the probiotic; space them well apart from your dose. Others blunt absorption of anything swallowed, rev up the liver enzymes that process drugs, or nudge seizure risk in people already prone to them. Get the three majors sorted, and the rest is mostly timing and attention.

— , Clinical Pharmacist · July 18, 2026

Major 3 Moderate 61 Minor 11 No known interaction 1,377

This box checks one ingredient at a time (like turmeric or magnesium). Taking a supplement product with a whole label of ingredients? Search the product instead — we check every ingredient on it ↓

Top Ingredient Interactions

Nafcillin Sodium: Top Interactions at a Glance

The most significant Nafcillin Sodium supplement & herbal interactions, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 75 interacting ingredients — plus 1,377 more checked with no known interaction. See the complete ranked list.

Start here

The Major Interactions to Know About

The most clinically significant Nafcillin Sodium + supplement combinations in our database, best-documented first. Open any card for the full report.

Major Likelihood Likely Siberian Cocklebur + Nafcillin Sodiumi

Siberian cocklebur can adversely affect the kidney.

Read the full interaction Major Likelihood Probable Activated Charcoal + Nafcillin Sodiumi

Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the route of administration.

Read the full interaction Major Likelihood Possible Asarabacca + Nafcillin Sodiumi

Asarabacca, a herbaceous plant, is often contaminated with aristolochic acid, a compound known for its nephrotoxic effects.

Read the full interaction
The complete list

Every Supplement Checked Against Nafcillin Sodium

All 1,452 ingredients in our database, ranked by severity — 75 with a Nafcillin Sodium interaction on file and 1,377 with none found. Filter by severity or search any ingredient; hover the for what each ingredient is.

Looking for an interaction with a specific supplement product? Search products instead ↓

Straight answers

Can You Take It With Nafcillin Sodium?

One-line answers, one card per combination — scroll through today’s 20 and tap any card for the full report. A different set rotates in daily until every combination has had its turn.

Can you take Agar with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Agar forms a thick gel, which may disrupt the absorption of nutrients and medications.

Full Agar + Nafcillin Sodium answer

Can you take Algin with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, algin can alter the absorption of oral drugs.

Full Algin + Nafcillin Sodium answer

Can you take Black Psyllium with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Black Psyllium + Nafcillin Sodium answer

Can you take Blond Psyllium with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, psyllium might increase, decrease, or have no effect on the absorption of oral drugs.

Full Blond Psyllium + Nafcillin Sodium answer

Can you take Carob with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, carob might also impair the absorption of oral drugs.

Full Carob + Nafcillin Sodium answer

Can you take Karaya Gum with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Co-administration of oral drugs with bulk forming laxatives such as karaya gum may decrease, increase, or have no effect on the absorption o...

Full Karaya Gum + Nafcillin Sodium answer

Can you take Marshmallow with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, mucilage in marshmallow might impair absorption of oral drugs.

Full Marshmallow + Nafcillin Sodium answer

Can you take Soy with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, antibiotics may decrease the activity of soy isoflavones.

Full Soy + Nafcillin Sodium answer

Can you take Xanthan Gum with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, xanthan gum can alter the absorption of oral drugs due to its fiber qualities.

Full Xanthan Gum + Nafcillin Sodium answer

Can you take Asian Water Plantain with Nafcillin Sodium?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Studies on animals have shown that Asian water plantain extract, which contains triterpenoids, is generally safe at doses up to 1440 mg/kg o...

Full Asian Water Plantain + Nafcillin Sodium answer

Can you take Siberian Cocklebur with Nafcillin Sodium?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Siberian cocklebur can adversely affect the kidney.

Full Siberian Cocklebur + Nafcillin Sodium answer

Can you take Activated Charcoal with Nafcillin Sodium?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Activated charcoal reduces systemic exposure to many drugs, including those that undergo enterohepatic recirculation, regardless of the rout...

Full Activated Charcoal + Nafcillin Sodium answer

Can you take Asarabacca with Nafcillin Sodium?

Major Use real caution — this is a major-rated interaction, generally best avoided or used only under close supervision. Asarabacca, a herbaceous plant, is often contaminated with aristolochic acid, a compound known for its nephrotoxic effects.

Full Asarabacca + Nafcillin Sodium answer

Can you take Bacillus Coagulans with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking antibiotics with Bacillus coagulans might decrease the effectiveness of B.

Full Bacillus Coagulans + Nafcillin Sodium answer

Can you take Bacillus Subtilis with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Bacillus subtilis with antibiotic drugs might decrease the effectiveness of B.

Full Bacillus Subtilis + Nafcillin Sodium answer

Can you take Bifidobacterium Animalis Subsp. Lactis with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Bifidobacterium lactis with antibiotic drugs might decrease the effectiveness of B.

Full Bifidobacterium Animalis Subsp. Lactis + Nafcillin Sodium answer

Can you take Bifidobacterium Bifidum with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Bifidobacterium.

Full Bifidobacterium Bifidum + Nafcillin Sodium answer

Can you take Bifidobacterium Breve with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Bifidobacterium breve with antibiotic drugs might decrease the effectiveness of B.

Full Bifidobacterium Breve + Nafcillin Sodium answer

Can you take Bifidobacterium Longum with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking Bifidobacterium longum with antibiotic drugs might decrease the effectiveness of B.

Full Bifidobacterium Longum + Nafcillin Sodium answer

Can you take Coffee Charcoal with Nafcillin Sodium?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Coffee charcoal can reduce the absorption of orally administered drugs and should be separated from oral drug administration by at least two...

Full Coffee Charcoal + Nafcillin Sodium answer
Read the list like a pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each entry links to a full report with the clinical detail, likelihood, evidence level, and citations for that exact combination.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

How Does Our Interaction Checker Work?

Behind every verdict on this page is a category system. Our source database doesn’t document supplement interactions drug-by-drug — it documents them against groups of medications that behave the same way (for example, “drugs processed by the CYP3A4 liver enzyme” or “blood-thinning medications”).

So the check works in three steps: (1) Nafcillin Sodium is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Nafcillin Sodium, and (3) each ingredient keeps its own severity, likelihood, and evidence grades from the underlying record. That’s why one supplement can carry several records for one drug — it may interact through more than one category.

Nafcillin Sodium sits in 5 interaction categories. Open any one to see what the group means:

Antibiotic Drugs 27 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

27 of the supplement ingredients on this page reach Nafcillin Sodium through this category.

Cytochrome P450 3A4 (Cyp3A4) Inducers 19 ingredients

A drug-metabolism group: these medications are processed by the named liver enzyme (a cytochrome P450). Supplements that speed this enzyme up or slow it down can lower or raise the medication's levels in your body.

19 of the supplement ingredients on this page reach Nafcillin Sodium through this category.

Oral Drugs 17 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

17 of the supplement ingredients on this page reach Nafcillin Sodium through this category.

Nephrotoxic Drugs 6 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

6 of the supplement ingredients on this page reach Nafcillin Sodium through this category.

Seizure Threshold Lowering Drugs 6 ingredients

A pharmacology grouping from our source database: medications in this group share a property that certain supplements are known to interact with, so an interaction documented for the group applies to every drug in it.

6 of the supplement ingredients on this page reach Nafcillin Sodium through this category.

Related: does Nafcillin Sodium deplete any nutrients?

Nafcillin Sodium has 7 reported nutrient associations in the research literature — see the Nafcillin Sodium nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Nafcillin Sodium

Most supplements are combination products — and the interaction may come from an ingredient you didn’t buy it for. Search any product below (or scan its label) and we’ll check every ingredient on it against Nafcillin Sodium.

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Pharmacist Counseling Corner

Nafcillin Sodium & Supplements: Common Questions

What supplements interact with Nafcillin Sodium?
Our database currently documents 75 ingredients with a known Nafcillin Sodium interaction (3 major, 61 moderate, 11 minor). The practical move: scan the major group first, then look up the exact supplements you take rather than reading all 75. The highest-ranked right now: Siberian Cocklebur, Activated Charcoal, Asarabacca.
Which Nafcillin Sodium supplement interactions are the most serious?
The 3 major-rated combinations — led by Siberian Cocklebur, Activated Charcoal and Asarabacca — deserve real caution: these are the ones generally best avoided, or used only with your prescriber watching. If you take any of them today, don't panic and don't stop anything abruptly — call your pharmacist first. Jump to the ranked list.
Can I take vitamins or supplements while on Nafcillin Sodium?
Plenty of supplements coexist fine with Nafcillin Sodium; a shorter list does not. Rather than memorizing it, check the specific ingredients on your labels — the ranked list above covers every one we've checked, and multi-ingredient products can be checked label-by-label with our scanner. Try the label scanner or the interaction checker.
Do brands like Unipen have the same supplement interactions as Nafcillin Sodium?
Yes — Unipen all contain Nafcillin Sodium, so everything on this page applies to them equally. Interactions belong to the active drug, never to the brand on the box; the same is true of generics.
Where do these interaction ratings come from?
Every rating comes from the Natural Medicines database — the same evidence-graded reference pharmacists and hospitals use — and each interaction carries three separate grades: severity (how bad it can be), likelihood (how well it's documented in studies and case reports), and an evidence level. Our pharmacists review the content; we never let an AI decide an interaction. See how to read the ratings and our editorial policy.
Does Nafcillin Sodium deplete any vitamins or nutrients?
It might — Nafcillin Sodium has 7 reported nutrient-depletion associations in the research literature, which is a different question from interactions: instead of a supplement changing the drug, the drug may lower a nutrient over time. See the Nafcillin Sodium nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Nafcillin Sodium and my other medications?
This page covers Nafcillin Sodium against supplements and herbal ingredients. Checking Nafcillin Sodium against your other prescription or OTC medications is a different tool — our drug interaction checker covers that side. Head to the drug–drug interaction checker.

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

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Sourcing

Where This Data Comes From — and Why You Can Trust It

🧪 Licensed clinical database

Every interaction verdict on this page comes from Natural Medicines Pro (TRC Healthcare / Therapeutic Research) — the same evidence-graded reference used by pharmacists and hospitals. We license this data directly; we do not scrape it, and no AI invents an interaction.

🧑‍⚕️ Pharmacist review

This page is curated and coded by , Clinical Pharmacist, with additional analysis by the HelloPharmacist Pharmacist Team. Editorial commentary is ours; the licensed interaction records are shown as sourced.

🔄 Kept current

Our interaction database refreshes on a weekly cycle, and this page re-checks the live database every time it’s rebuilt — what you see reflects the database as of October 5, 2026.

🔍 Full transparency

How every dataset on this site is sourced, licensed, and updated is documented publicly: our data sources · editorial policy · how we use AI.

Educational information, not medical advice. An interaction being on file does not mean it will happen to you — and absence of one is not proof of safety. Never start or stop a medication or supplement without talking to your pharmacist or doctor.