Drug & supplement interaction

Sweet Annie + Isoniazid

Isoniazid brand names: Laniazid, INH, Nydrazid.

Moderate Interaction
Medically reviewed by · Updated September 2026
The bottom line Moderate

Sweet Annie has a moderate interaction with Isoniazid. Theoretically, concomitant use might have additive adverse hepatotoxic effects.

Read the full interaction report
SeverityModerate
LikelihoodPossible
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Sweet Annie and Isoniazid

Here is the interaction we found between these two, with the evidence behind it.

Moderate

HEPATOTOXIC DRUGS

Why this applies to Isoniazid

Isoniazid falls under HEPATOTOXIC DRUGS — the group Sweet Annie interacts with.

Theoretically, concomitant use might have additive adverse hepatotoxic effects.
There is some concern that Sweet Annie can adversely affect the liver.
Severity Moderate Likelihood Possible Evidence D

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.

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Here's the main thing to know with this pairing: isoniazid is already one of the harder medicines on the liver. It's a well-known cause of liver irritation and, rarely, more serious liver injury. Sweet Annie (Artemisia annua) has also been linked to possible liver stress in some reports, so taking the two together raises a fair question about doubling up on that risk.

To be honest, this concern is mostly theoretical and based on weak, anecdotal evidence, not strong studies. Still, since isoniazid alone can already cause warning signs like nausea, loss of appetite, dark urine, yellowing of the skin or eyes, or pain in the upper right belly, it's worth being cautious. I wouldn't add Sweet Annie without checking with your doctor or pharmacist first, and don't stop your TB treatment on your own.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Centers for Disease Control and Prevention (CDC). Hepatitis temporally associated with an herbal supplement containing artemisinin-Washington, 2008. MMWR Morb Mortal Wkly Rep 2009;58:854-8.
  2. Savage RL, Hill GR, Barnes J, Kenyon SH, Tatley MV. Suspected hepatotoxicity with a supercritical carbon dioxide extract of Artemisia annua in grapeseed oil used in New Zealand. Front Pharmacol. 2019;10:1448. PubMed
  3. Ruperti-Repilado FJ, Haefliger S, Rehm S, et al. Danger of herbal tea: a case of acute cholestatic hepatitis due to Artemisia annua tea. Front Med (Lausanne). 2019;6:221. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction 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.
  • PossibleInteraction 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.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Sweet Annie Also Interacts With Other Medications

Sweet Annie has 888 moderate known drug interactions in our database — the Isoniazid one above is one of them. If you take anything else, check it against the full list below.

Moderate 888 No known interaction 1,942 (incl. Isoniazid)
Taking anything else?

Check Another of Your Medications Against Sweet Annie

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

From our Q&A

Questions About Sweet Annie or Isoniazid

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Sweet Annie or Isoniazid, 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 Isoniazid

This page covers Sweet Annie only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Isoniazid page lists 84 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Siberian Cocklebur (major), Wine (major) and Adrafinil (moderate).

By severity: 4 major · 67 moderate · 13 minor.

From our pharmacist’s overview on the Isoniazid page

“The liver does most of the worrying here. Isoniazid, a backbone of tuberculosis treatment, is already hard on the liver by itself, and 38 of the supplements on this list can add strain, from Siberian cocklebur, a major-rated entry, to everyday herbs like ashwagandha and black cohosh.”

Reviewed by 2 · Jul 18, 2026

Open the Isoniazid interaction page

One more smart check

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

We hold 243 real supplement products containing Sweet Annie, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sweet Annie. Your product may carry other ingredients that interact with Isoniazid too, on top of Sweet Annie — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Sweet Annie and Isoniazid 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 Sweet Annie
Top half

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

29 days ago today
Medication Isoniazid
Steady interest

#2,322 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.

Supplement

About Sweet Annie

What is Sweet Annie?

Sweet Annie
  • Malaria (traditional)
  • Fever
  • Inflammation
  • Digestive complaints
  • Antimicrobial support
  • Insect repellent

Sweet Annie (Artemisia annua) is the source of artemisinin, a compound used in prescription antimalarial drugs. While the purified drug is well studied for malaria, the herb itself as a supplement is not proven for the wide range of conditions people use it for, and self-treating malaria with the raw herb is dangerous. Talk to a pharmacist or doctor before using it.

Read the full Sweet Annie monograph & all interactions
Medication

About Isoniazid

What Is Isoniazid Used For?

Brand names: Laniazid, INH, Nydrazid

Isoniazid is used to treat all forms of tuberculosis (TB) caused by susceptible bacteria. Because TB bacteria can quickly become resistant to a single drug, isoniazid must always be combined with other anti-TB medications when treating active TB — it is never used alone for active disease.

Isoniazid is also used as preventive therapy (sometimes called latent TB treatment) for people who have a positive TB skin test but do not yet have active disease. This includes people with HIV infection, close contacts of someone with active TB, recent TB skin test converters, and people with certain medical conditions — such as silicosis, diabetes mellitus, end-stage renal disease, leukemia, or Hodgkin's disease — that raise their TB risk.

See full Isoniazid drug information
Keep checking

Other Drugs & Sweet Annie

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

0Major
888Moderate
0Minor
1,941No known interaction
888 Moderate 1,941 No interaction
Moderate

888 interactions

Showing 60 of 888 moderate interactions — see all 888 on the Sweet Annie page.

No interaction 1,941 drugs checked — show the list

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

Showing the 60 most looked-up of 1,941 medications checked with no known interaction — see the full Sweet Annie list.

See the full Sweet Annie interactions page
See every supplement checked against Isoniazid, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

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.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Sweet Annie monograph › Uses, safety, and every drug interaction in one place Isoniazid supplement interactions › Every supplement checked against Isoniazid, ranked by severity Isoniazid drug information › The full plain-English guide to this medication Supplement interaction checker › Check any supplement or product against your medications Browse medications A–Z › Every drug we've checked against herbs & supplements Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Sweet Annie and Isoniazid Together: Common Questions

Can you take Sweet Annie with Isoniazid?
There is a moderate interaction, so it may be acceptable with monitoring or timing changes — but check with your pharmacist first. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Sweet Annie and Isoniazid interaction?
We rate it Moderate. This combination may require monitoring, a dose adjustment, or separating the times you take each one. Consult your pharmacist before using them together.

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

Still Have a Question About Isoniazid and Sweet Annie?

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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.