Drug & supplement interaction

Houseleek + Cefazolin

Cefazolin brand name: Ancef.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Houseleek and Cefazolin in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first.

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Interaction report

Houseleek and Cefazolin

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Cefazolin and Houseleek in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

Worth understanding: our licensed dataset holds no drug-interaction record for Houseleek at all — not against Cefazolin, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Houseleek safety at a glance

Houseleek overall Use caution It has a long history of topical folk use, but modern safety data is limited, especially for taking it by mouth.
Pregnancy Avoid There is not enough reliable safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid Safety while breastfeeding is unknown, so avoiding it is the safer choice.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Cefazolin and Houseleek? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Cefazolin’s Own FDA Label Lists

This is not an interaction — none of it involves Houseleek. These are the most notable effects listed in the ADVERSE REACTIONS section of Cefazolin’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. 10 of them are worth acting on rather than waiting out — marked below.

  • A severe allergic reaction Worth acting on mentioned in 10.4% of FDA reports for Cefazolin
  • Kidney problems Worth acting on mentioned in 7.7% of FDA reports for Cefazolin
  • Fainting Worth acting on
  • Confusion Worth acting on
  • A severe skin reaction Worth acting on
  • Seizures Worth acting on
  • A low platelet count Worth acting on
  • Anemia Worth acting on
  • Hives Worth acting on
  • A low white blood cell count Worth acting on

Showing the 10 most notable of 28 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Cefazolin. Read the label on DailyMed › Where a percentage is shown, it is the share of 11,986 voluntary FDA FAERS reports for Cefazolin that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Houseleek’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Houseleek side to compare — that is a limit of the record, not a statement that Houseleek has no side effects.

Everything else you take

See Every Supplement That Interacts With Cefazolin

This page covers Houseleek only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cefazolin page lists 43 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Asarabacca (major), Siberian Cocklebur (major), African Wild Potato (moderate), Aristolochia (moderate) and Bacillus Coagulans (moderate).

By severity: 2 major · 39 moderate · 2 minor.

From our pharmacist’s overview on the Cefazolin page

“Cefazolin (Ancef), an antibiotic given by injection, usually before surgery or for skin and bloodstream infections, carries 43 supplement interactions on file, and the two rated major are where I would start reading. Siberian cocklebur and asarabacca can each damage the kidneys, the same organ that clears cefazolin, and asarabacca is f…”

Reviewed by 2 · Jul 18, 2026

Open the Cefazolin interaction page

How much people look this up

Where Houseleek and Cefazolin Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Houseleek
Steady interest

#1,111 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Cefazolin
Steady interest

#1,891 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions. Houseleek is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Houseleek reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Houseleek and Cefazolin records this page draws on were last updated June 22, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Houseleek

What is Houseleek?

  • Minor burns and skin irritation
  • Insect bites and stings
  • Warts and corns
  • Earache (traditional folk use)
  • Soothing cuts and scrapes

Houseleek is a hardy succulent traditionally applied to the skin for minor burns, bites, and irritations, much like aloe vera. Scientific evidence supporting its benefits is very limited and mostly comes from traditional use and laboratory studies, so it should not replace proven treatments. Talk to a pharmacist or doctor before using it, especially during pregnancy or breastfeeding.

Sempervivum tectorum · Crassulaceae · Leaves and the juice (sap) pressed from the leaves · Fresh leaf juice or pulp, poultices, ointments, and occasionally infusions

An interaction check asks whether these two react with each other — it does not ask whether Houseleek is a good idea for someone in your situation. Here is what our Houseleek record says about it on its own.

Houseleek: dosing

There is no standardized or well-established dose for houseleek. Traditional use involved applying the fresh leaf juice or crushed leaf pulp directly to the skin as needed, but no proven, measured dosing exists.If you choose to use a commercial product such as an ointment or gel, follow the directions on the label.

From our Houseleek monograph — the full record covers uses, side effects and every documented interaction.

Read the full Houseleek monograph & all interactions
Medication

About Cefazolin Injection

What Is Cefazolin Injection Used For?

Brand name: Ancef

Cefazolin Injection is used to treat bacterial infections in adults and children 1 month of age and older, including respiratory tract infections, urinary tract infections, skin and skin structure infections, biliary tract infections, bone and joint infections, genital infections (such as prostatitis and epididymitis), septicemia (a serious bloodstream infection), and endocarditis (infection of the heart's inner lining).

It is also used in adult patients — and in pediatric patients aged 10 to 17 years for the premixed formulation — to help prevent infection around the time of surgery, particularly for procedures that carry a higher risk of postoperative infection.

Most-Reported Side Effects for Cefazolin

From FAERS, the FDA’s public side-effect reporting system (11,986 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Hypotension 702 reports
Anaphylactic reaction 644 reports
Anaphylactic shock 601 reports
Rash 592 reports
Fever 512 reports
See full Cefazolin Injection drug information
Keep checking

Other Drugs & Houseleek

Browse every other medication we’ve checked against Houseleek — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

We also checked Houseleek against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Houseleek list.

See the full Houseleek interactions page
See every supplement checked against Cefazolin, ranked by severity
Evidence & sources

Houseleek References

The 1 sources that drive our Houseleek monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Houseleek is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Herbs and Supplements — MedlinePlus (U.S. National Library of Medicine) Source

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Houseleek and Cefazolin Together: Common Questions

Is it safe to take Houseleek with Cefazolin?
We do not list a known interaction between Houseleek and Cefazolin. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Does Cefazolin interact with any supplements?
Yes. Cefazolin has documented interactions with 43 supplements in our database — Houseleek is not one of them. The Cefazolin interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Houseleek monograph Uses, safety profile, and every drug interaction in one place Cefazolin Injection drug information The full plain-English guide to this medication Cefazolin supplement interactions Every supplement checked against Cefazolin, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cefazolin and Houseleek?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.