Medication interaction hub

What Supplements Interact with Tetracycline?

Tetracycline brand names: Sumycin, Sumycin 250, Tetrex BID, Achromycin V, Robitet, and others. Every interaction below applies to the brands too.

164 Interactions 7 Major 136 Moderate 21 Minor
Curated & coded by · Clinical Pharmacist · Updated September 22, 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 Tetracycline? 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 Tetracycline 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

164 supplements and herbal ingredients have interactions with Tetracycline on file in the HelloPharmacist interaction database — 7 rated major, 136 moderate, and 21 minor. The most serious involve Siberian Cocklebur, Activated Charcoal, Beer, Oleander and St. John's Wort.

Our assessment: with 7 major-rated interactions on the list, this one deserves real attention — know the major entries before combining anything with Tetracycline.

Major 7 Moderate 136 Minor 21 No known interaction 1,288

Ranked by severity below. Every entry links to the full pharmacist-reviewed report for that exact combination — what can happen, how likely it is, and what to do about it.

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 ↓

Most Viewed Ingredient Interactions

Tetracycline: Top Interactions at a Glance

The Tetracycline supplement & herbal interactions people checked most in the last 24 hours, colored by severity. Tap any ingredient to open the full report for that pair.

Showing the 12 highest-ranked of 164 interacting ingredients — plus 1,288 more checked with no known interaction. See the complete ranked list.

Start here

The Most-Checked Tetracycline Combinations Today

The Tetracycline + supplement pages people viewed most in the last 24 hours (resets at midnight). Open any card for the full report.

Minor Likelihood Possible Bromelain + Tetracyclinei

Theoretically, bromelain might increase levels of tetracycline antibiotics.

Read the full interaction Moderate Likelihood Possible Squill + Tetracyclinei

Tetracycline antibiotics appear to increase the gastrointestinal absorption of oral digoxin.

Read the full interaction Moderate Likelihood Possible Riboflavin + Tetracyclinei

Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.

Read the full interaction Moderate Likelihood Possible Rue + Tetracyclinei

Theoretically, rue might increase the risk for phototoxicity when used with photosensitizing drugs.

Read the full interaction Moderate Likelihood Possible Flaxseed + Tetracyclinei

Theoretically, antibiotics might interfere with the metabolism of flaxseed constituents, which could potentially alter the effects of flaxseed.

Read the full interaction Major Likelihood Probable Oleander + Tetracyclinei

Theoretically, tetracycline antibiotics may increase the risk of oleander toxicity.

Read the full interaction
The complete list

Every Supplement Checked Against Tetracycline

All 1,452 ingredients in our database, ranked by severity — 164 with a Tetracycline interaction on file and 1,288 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 Tetracycline?

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 Bromelain with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, bromelain might increase levels of tetracycline antibiotics.

Full Bromelain + Tetracycline answer

Can you take Squill with Tetracycline?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Tetracycline antibiotics appear to increase the gastrointestinal absorption of oral digoxin.

Full Squill + Tetracycline answer

Can you take Riboflavin with Tetracycline?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, taking riboflavin with tetracycline antibiotics may decrease the potency of these antibiotics.

Full Riboflavin + Tetracycline answer

Can you take Rue with Tetracycline?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, rue might increase the risk for phototoxicity when used with photosensitizing drugs.

Full Rue + Tetracycline answer

Can you take Flaxseed with Tetracycline?

Moderate Possibly, but carefully — this moderate-rated combination may need monitoring, a dose adjustment, or separated timing. Theoretically, antibiotics might interfere with the metabolism of flaxseed constituents, which could potentially alter the effects of flaxse...

Full Flaxseed + Tetracycline answer

Can you take Black Psyllium with Tetracycline?

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 + Tetracycline answer

Can you take Blond Psyllium with Tetracycline?

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 + Tetracycline answer

Can you take Carob with Tetracycline?

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 + Tetracycline answer

Can you take Celery with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, celery might increase the risk of photosensitivity reactions when taken with photosensitizing drugs.

Full Celery + Tetracycline answer

Can you take Devil's Claw with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, devil's claw might increase levels of P-glycoprotein substrates.

Full Devil's Claw + Tetracycline answer

Can you take Grapefruit with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Grapefruit juice does not seem to affect renal P-glycoprotein (P-gp).

Full Grapefruit + Tetracycline answer

Can you take Karaya Gum with Tetracycline?

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 + Tetracycline answer

Can you take Marshmallow with Tetracycline?

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 + Tetracycline answer

Can you take Puravive with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Puravive contains quercetin.

Full Puravive + Tetracycline answer

Can you take Sesame with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, sesame might alter the transport of P-glycoprotein substrates.

Full Sesame + Tetracycline answer

Can you take Soy with Tetracycline?

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 + Tetracycline answer

Can you take Uva Ursi with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, uva ursi may alter the levels of drugs transported by P-glycoprotein.

Full Uva Ursi + Tetracycline answer

Can you take Xanthan Gum with Tetracycline?

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 + Tetracycline answer

Can you take Asian Water Plantain with Tetracycline?

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 + Tetracycline answer

Can you take Milk Thistle with Tetracycline?

Minor Usually — this is a minor-rated interaction, generally not clinically significant but worth mentioning to your pharmacist. Theoretically, milk thistle might increase the absorption of P-glycoprotein substrates.

Full Milk Thistle + Tetracycline 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) Tetracycline is classified into the pharmacology categories it belongs to, (2) every supplement interaction documented against any of those categories is inherited by Tetracycline, 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.

Tetracycline sits in 8 interaction categories. Open any one to see what the group means:

Hepatotoxic Drugs 38 ingredients

Medications with known liver considerations. Supplements that can stress the liver add to the load.

38 of the supplement ingredients on this page reach Tetracycline through this category.

P-Glycoprotein Substrates 37 ingredients

A drug-transport group: these medications are moved in and out of cells by the P-glycoprotein pump. Supplements that affect the pump can change how much of the drug is absorbed or kept in the body.

37 of the supplement ingredients on this page reach Tetracycline through this category.

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 Tetracycline through this category.

Tetracycline Antibiotics 24 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.

24 of the supplement ingredients on this page reach Tetracycline through this category.

Photosensitizing Drugs 20 ingredients

Medications that make skin more sun-sensitive. Supplements with the same property can compound it.

20 of the supplement ingredients on this page reach Tetracycline 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 Tetracycline 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 Tetracycline through this category.

Topical Drugs 3 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.

3 of the supplement ingredients on this page reach Tetracycline through this category.

About Tetracycline

Tetracycline is an antibiotic used to treat bacterial infections including respiratory, skin, urinary, and tick-borne infections, plus acne.

Generic name: Tetracycline  ·  Brand names: Sumycin, Sumycin 250, Tetrex BID, Achromycin V, Robitet, Sumycin 500, Tetra, Nor-Tet, Tetracyn, Tetrex, Achromycin, Terramycin IM.

See the full Tetracycline drug information

Related: does Tetracycline deplete any nutrients?

Tetracycline has 121 reported nutrient associations in the research literature — see the Tetracycline nutrient depletion report.

Check a real product

Take a Supplement Product? Check the Whole Bottle Against Tetracycline

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 Tetracycline.

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Grounded search over our product catalog — every verdict comes from our interaction database, never AI guesswork. How we use AI

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Pharmacist Counseling Corner

Tetracycline & Supplements: Common Questions

What supplements interact with Tetracycline?
In our interaction database, 164 supplement and herbal ingredients have an interaction with Tetracycline on file — 7 rated major, 136 moderate, and 21 minor. That number sounds scarier than it is: severity matters far more than the count, which is why the list on this page is ranked instead of alphabetical. Start at the top. The highest-ranked right now: Siberian Cocklebur, Activated Charcoal, Beer.
Which Tetracycline supplement interactions are the most serious?
Focus on the major group: Siberian Cocklebur, Activated Charcoal, Beer, Oleander and St. John's Wort, among others. A major rating means the combination can be clinically significant, not that harm is guaranteed — but it's exactly the kind of thing to run past your pharmacist before your next dose, not after. Jump to the ranked list.
Can I take vitamins or supplements while on Tetracycline?
That depends entirely on which supplement. The honest answer for Tetracycline is in the ranked list above — and if what you take is a combination product with a dozen ingredients, don't check them one by one: photograph the label with our scanner and we'll check the whole thing at once. Try the label scanner or the interaction checker.
Do brands like Sumycin have the same supplement interactions as Tetracycline?
Yes — Sumycin, Sumycin 250, Tetrex BID, Achromycin V, Robitet and other brands all contain Tetracycline, 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 Tetracycline deplete any vitamins or nutrients?
It might — Tetracycline has 121 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 Tetracycline nutrient depletion report for the specifics and what to discuss with your pharmacist.
What about Tetracycline and my other medications?
This page covers Tetracycline against supplements and herbal ingredients. Checking Tetracycline 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, or read the full Tetracycline drug information.

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

Where next

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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 September 22, 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.