Drug & supplement interaction

Epistane + Cefprozil

Cefprozil brand name: Cefzil.

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

We found no known interaction between Epistane and Cefprozil 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.

Know someone taking this? Share
Facebook Post Reddit Email
On this page
Interaction report

Epistane and Cefprozil

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 Cefprozil and Epistane 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.

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.

Epistane safety at a glance

Epistane overall Avoid Epistane is a liver-toxic anabolic steroid, not a safe supplement, and is banned for sale as a dietary supplement.
Pregnancy Possibly Unsafe When used orally. Anabolic androgenic steroids, such as epistane, can disrupt the body's hormonal balance and cause various adverse effects including reduced fe... Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally. Anabolic androgenic steroids, such as epistane, can disrupt the body's hormonal balance and cause various adverse effects including reduced fe... Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Cefprozil and Epistane? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Cefprozil

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cefprozil is filed under 6 classifications — including organic anion transporter 3 (oat3) substrates, organic anion transporter 1 (oat1) substrates, antibiotic drugs. Epistane has documented interactions with 1 drug class — the most serious being hepatotoxic drugs (moderate) — and none of Cefprozil’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Epistane Does Interact With Other Medications

Epistane has 370 moderate known drug interactions in our database — Cefprozil isn’t one of them. If you take anything else, check it against the full list below.

Moderate 370 No known interaction 2,460 (incl. Cefprozil)
Taking anything else?

Check Another of Your Medications Against Epistane

Covers the 2,830 medications we’ve checked against Epistane. Pick one to open its full report.

What to actually watch for

What Epistane Itself Has Been Linked To

This is not an interaction — nothing below involves Cefprozil. It is the side-effect record for Epistane on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Epistane, this list is the first place to look. One entry is worth acting on rather than waiting out — marked below.

  • Yellowing of the skin or eyes / Liver problems Worth acting on Additional detail

    “Epistane is an anabolic androgenic steroid, and more specifically a 17-alpha-alkylated androgen. Therefore, there is concern that epistane has hepatotoxic effects. Also, epistane is structurally similar to epitiostanol, which was associated with hepatotoxicity in a case series of four patients.”

    Epistane · Natural Medicines adverse-effect record, reported in cholestasis.

    2 sources cited
    1. 91138. Rahnema CD, Crosnoe LE, Kim ED. Designer steroids - over-the-counter supplements and their androgenic component: review of an increasing problem. Andrology. 2015;3(2):150-5. PubMed
    2. 109606. Díaz FC, Sáez-González E, Benlloch S, et al. Albumin dialysis with MARS for the treatment of anabolic steroid-induced cholestasis. Ann Hepatol. 2016;15(6):939-943.
  • Itching Additional detail

    Recorded for Epistane in the same Natural Medicines adverse-effect record shown under Yellowing of the skin or eyes / Liver problems above.

Everything above comes from the Natural Medicines adverse-effect record for Epistane — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Cefprozil’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Cefprozil column appears here.

Special populations

Epistane in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used orally. Anabolic androgenic steroids, such as epistane, can disrupt the body's hormonal balance and cause various adverse effects including reduced fertility, hair loss, acne, and behavioral changes. Anabolic androgenic steroid use has also been associated with hepatotoxicity and increased risk for heart disease. The US Food and Drug Administration and other regulatory agencies warn that dietary supplements containing anabolic steroids are dangerous. Avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

From our Q&A

Questions About Epistane or Cefprozil

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Epistane or Cefprozil, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Cefprozil

This page covers Epistane only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cefprozil page lists 60 supplements it has a documented interaction with, worst first, each one explained.

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

By severity: 3 major · 46 moderate · 11 minor.

From our pharmacist’s overview on the Cefprozil page

“Cefprozil (Cefzil) is a cephalosporin antibiotic, usually a short course for ear, sinus, throat, or skin infections, and three of the 60 supplements on this list warrant real caution even for a week of pills. Activated charcoal can bind the drug and pull it out of your system before it works.”

Reviewed by 2 · Jul 18, 2026

Open the Cefprozil interaction page

One more smart check

Taking Epistane as Part of a Dietary Supplement Product? Check It for Interactions

We hold 32 real supplement products containing Epistane, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Epistane. Even though Epistane itself has no known interaction with Cefprozil, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Epistane and Cefprozil 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 Epistane
Top half

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

29 days ago today
Medication Cefprozil
Steady interest

#1,986 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.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Epistane reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Epistane and Cefprozil records this page draws on were last updated July 10, 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 Epistane

What is Epistane?

  • Building muscle mass
  • Increasing strength
  • Cutting or losing body fat
  • Bodybuilding cycles

Epistane is a synthetic anabolic steroid (a methylated 'designer steroid'), not a true dietary supplement or herb, even though it has been sold as a 'prohormone.' It is liver-toxic, can disrupt your natural hormones, and is illegal to sell as a supplement in the US under the Designer Anabolic Steroid Control Act. We strongly recommend avoiding it and talking with a doctor or pharmacist.

Synthetic compound (not a plant) · Capsules, tablets (sold as a 'prohormone' or 'designer steroid' supplement)

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

Epistane: dosing

There is no established or recommended safe dose for Epistane, because it is an anabolic steroid that was never approved as a medicine or a legitimate supplement. They can discuss safer, legal ways to reach your fitness goals and check on your liver and hormone health.

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

Read the full Epistane monograph & all interactions
Medication

About Cefprozil

What Is Cefprozil Used For?

Brand name: Cefzil

Cefprozil tablets and oral suspension are both used to treat mild to moderate bacterial infections in adults and children. Approved uses include pharyngitis/tonsillitis (strep throat), acute sinusitis, otitis media (ear infections), acute bacterial exacerbation of chronic bronchitis, and uncomplicated skin and skin-structure infections.

Cefprozil tablets are also approved for secondary bacterial infection of acute bronchitis. Because antibiotic resistance is a real concern, cefprozil should only be used when the infection is proven or strongly suspected to be caused by bacteria that respond to it.

Most-Reported Side Effects for Cefprozil

From FAERS, the FDA’s public side-effect reporting system (780 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Chronic kidney disease 89 reports
Drug hypersensitivity 73 reports
Cough 64 reports
Acute kidney injury 59 reports
Dyspnea 59 reports
See full Cefprozil drug information
Keep checking

Other Drugs & Epistane

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

0Major
370Moderate
0Minor
2,459No known interaction
370 Moderate 2,459 No interaction
Moderate

370 interactions

Showing 60 of 370 moderate interactions — see all 370 on the Epistane page.

No interaction 2,459 drugs checked — show the list

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

Showing the 60 most looked-up of 2,459 medications checked with no known interaction — see the full Epistane list.

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

Epistane References

The 3 references that drive our Epistane monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Joseph JF, Parr MK. Synthetic androgens as designer supplements. Curr Neuropharmacol. 2015;13(1):89-100. PubMed
  2. Rahnema CD, Crosnoe LE, Kim ED. Designer steroids - over-the-counter supplements and their androgenic component: review of an increasing problem. Andrology. 2015;3(2):150-5. PubMed
  3. Díaz FC, Sáez-González E, Benlloch S, et al. Albumin dialysis with MARS for the treatment of anabolic steroid-induced cholestasis. Ann Hepatol. 2016;15(6):939-943.

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 Epistane and Cefprozil Together: Common Questions

Is it safe to take Epistane with Cefprozil?
We do not list a known interaction between Epistane and Cefprozil. 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.
How was the Epistane and Cefprozil combination checked?
Interactions in our licensed database are recorded against drug classes. Cefprozil is filed under 6 classifications, and Epistane has documented interactions with 1 drug class — none of Cefprozil's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Epistane interact with any other medications?
Yes. Epistane has 370 documented drug interactions in our database — Cefprozil is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Cefprozil interact with any supplements?
Yes. Cefprozil has documented interactions with 60 supplements in our database — Epistane is not one of them. The Cefprozil 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

Epistane monograph Uses, safety profile, and every drug interaction in one place Cefprozil drug information The full plain-English guide to this medication Cefprozil supplement interactions Every supplement checked against Cefprozil, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cefprozil and Epistane?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.