Drug & supplement interaction

Sodium Tetrachloroaurate + Promethazine

Promethazine brand name: Phenergan.

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 Sodium Tetrachloroaurate and Promethazine 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. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Sodium Tetrachloroaurate and Promethazine

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 Promethazine and Sodium Tetrachloroaurate 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 Sodium Tetrachloroaurate at all — not against Promethazine, 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.

Sodium Tetrachloroaurate safety at a glance

Sodium Tetrachloro... overall Avoid This is an industrial gold(III) salt, not a supplement, and is not safe to consume.
Pregnancy Possibly Unsafe When used orally or parenterally. Sodium tetrachloroaurate is a gold salt. Evidence from animal models shows that the administration of other gold salts increas... Read the full pregnancy detail
Breastfeeding Avoid Not for human use; avoid entirely while breastfeeding.

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 Promethazine and Sodium Tetrachloroaurate? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Sodium Tetrachloroaurate and Promethazine May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. 3 of them are worth acting on rather than waiting out — marked below.

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

    Sodium Tetrachloroaurate

    “Orally and parenterally, gold salts have been associated with slight elevations in serum aminotransferase levels. Parenterally, gold salts have also been associated with acute liver injury, although this is less common. Onset of injury seems to occur 1-8 weeks after starting therapy. Initial symptoms of liver injury include fever, rash, malaise, nausea, dark urine, and jaundice.”

    Sodium Tetrachloroaurate · Natural Medicines adverse-effect record, reported in nausea and vomiting.

    1 source cited
    1. 100535. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Gold Preparations. [Updated 2017 Aug 2].

    Promethazine

    Listed in the ADVERSE REACTIONS section of the FDA label for Promethazine. Read the label on DailyMed ›

  • A low platelet count / A low white blood cell count Worth acting on Additional detail

    Sodium Tetrachloroaurate

    “No adverse effects have been reported; however, a thorough evaluation of safety outcomes has not been conducted. Sodium tetrachloroaurate contains gold and might cause adverse effects similar to other gold salts. Orally, gold salts have been reported to cause gastrointestinal side effects, including diarrhea, loose stools, nausea, vomiting, and abdominal cramps.”

    Sodium Tetrachloroaurate · Natural Medicines adverse-effect record, reported in anemia.

    3 sources cited
    1. 100534. Ridaura (auranofin) [package insert]. San Diego, CA: Prometheus Laboratories, Inc; 2011.
    2. 100535. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Gold Preparations. [Updated 2017 Aug 2].
    3. 100536. Eisler R. Chrysotherapy: a synoptic review. Inflamm Res. 2003;52(12):487-501. PubMed

    “Orally or parenterally, gold salts may cause gold toxicity, with signs including immune thrombocytopenia, leukopenia, granulocytopenia, and aplastic anemia. Sodium tetrachloroaurate is a gold salt and may theoretically cause similar adverse effects.”

    Sodium Tetrachloroaurate · Natural Medicines adverse-effect record, reported in anemia.

    1 source cited
    1. 100534. Ridaura (auranofin) [package insert]. San Diego, CA: Prometheus Laboratories, Inc; 2011.

    Promethazine

    Listed in the ADVERSE REACTIONS section of the FDA label for Promethazine. Read the label on DailyMed ›

  • Tiredness reported in 6.6% of FDA reports for Promethazine Additional detail

    Sodium Tetrachloroaurate

    Recorded for Sodium Tetrachloroaurate in the same Natural Medicines adverse-effect record shown under Yellowing of the skin or eyes above.

    Promethazine

    Listed in the ADVERSE REACTIONS section of the FDA label for Promethazine, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Vomiting / Nausea reported in 11.7% of FDA reports for Promethazine Additional detail

    Sodium Tetrachloroaurate

    “Orally, gold salts can cause stomatitis, which may be preceded by a metallic taste. Other adverse events including diarrhea, loose stools, nausea, vomiting, and abdominal cramps may also occur. Ulcerative enterocolitis has also been reported, but this is rare. Sodium tetrachloroaurate is a gold salt and may theoretically cause similar adverse effects.”

    Sodium Tetrachloroaurate · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 100534. Ridaura (auranofin) [package insert]. San Diego, CA: Prometheus Laboratories, Inc; 2011.

    Promethazine

    Listed in the ADVERSE REACTIONS section of the FDA label for Promethazine, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • A skin rash Additional detail

    Sodium Tetrachloroaurate

    “Parenterally, gold salts commonly cause cutaneous reactions including pruritus and dermatitis. Chrysiasis, which is an irreversible blue-gray discoloration of the skin, may also occur. Exposure to sunlight might worsen these reactions. Sodium tetrachloroaurate is a gold salt and may theoretically cause similar adverse effects.”

    Sodium Tetrachloroaurate · Natural Medicines adverse-effect record, reported in dermatitis.

    1 source cited
    1. 100534. Ridaura (auranofin) [package insert]. San Diego, CA: Prometheus Laboratories, Inc; 2011.

    Promethazine

    Listed in the ADVERSE REACTIONS section of the FDA label for Promethazine. Read the label on DailyMed ›

Reported for Sodium Tetrachloroaurate but not commonly for Promethazine: stomach pain, an allergic reaction, a change in taste and anemia.

Effects for Promethazine come from the ADVERSE REACTIONS section of its FDA label; effects for Sodium Tetrachloroaurate come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 22,361 voluntary FDA FAERS reports for Promethazine that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Sodium Tetrachloroaurate in Pregnancy & Breastfeeding

Pregnancy Possibly Unsafe

When used orally or parenterally. Sodium tetrachloroaurate is a gold salt. Evidence from animal models shows that the administration of other gold salts increases the risk of miscarriage and congenital abnormalities in the offspring. Theoretically, sodium tetrachloroaurate may have similar adverse effects; 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 Sodium Tetrachloroaurate or Promethazine

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

This page covers Sodium Tetrachloroaurate only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Promethazine page lists 83 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Henbane (major), Scopolia (major), Alfalfa (moderate) and Angel's Trumpet (moderate).

By severity: 3 major · 57 moderate · 23 minor.

From our pharmacist’s overview on the Promethazine page

“Promethazine (Phenergan) is a phenothiazine antihistamine used for allergies, nausea, and motion sickness, and it is strongly anticholinergic on its own, causing dry mouth, blurred vision, drowsiness, and constipation. That is why the 83 supplements and herbs on this list deserve real attention, starting with the three rated major.”

Reviewed by 2 · Jul 18, 2026

Open the Promethazine interaction page

One more smart check

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

We hold 1 real supplement products containing Sodium Tetrachloroaurate, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Sodium Tetrachloroaurate. Even though Sodium Tetrachloroaurate itself has no known interaction with Promethazine, 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 Sodium Tetrachloroaurate and Promethazine 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 Sodium Tetrachloroaurate
Steady interest

#1,410 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Promethazine
Top half

#1,206 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 Sodium Tetrachloroaurate reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Sodium Tetrachloroaurate and Promethazine records this page draws on were last updated July 11, 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 Sodium Tetrachloroaurate

What is Sodium Tetrachloroaurate?

  • Used in chemistry as a source of gold
  • Gold nanoparticle synthesis (research)
  • Electroplating and gold chemistry
  • Marketed by some sellers as a 'colloidal gold' precursor

Sodium tetrachloroaurate is a gold(III) chemical compound used in laboratories and industry, not a dietary supplement or herb. It is not approved or recommended for human use, and ingesting it can be harmful. Do not take it as a supplement.

Not a plant; this is a chemical gold(III) compound · Laboratory reagent solution; not sold as a dietary supplement

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

Sodium Tetrachloroaurate: dosing

There is no established or safe human dose for sodium tetrachloroaurate, because it is not a dietary supplement or approved medicine. We cannot and will not provide an amount to take.Do not consume this product.

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

Read the full Sodium Tetrachloroaurate monograph & all interactions
Medication

About Promethazine

What Is Promethazine Used For?

Brand name: Phenergan

Promethazine is used for a wide range of conditions. Tablets, oral solution, and rectal suppositories (brands including Phenergan, Promethegan, and Phenadoz) are approved for seasonal and perennial allergic rhinitis, vasomotor rhinitis, allergic conjunctivitis, hives (urticaria), angioedema, dermographism, and allergic reactions to blood or plasma. They are also used for motion sickness (both prevention and active treatment), nausea and vomiting related to anesthesia and surgery, sedation, and as a helper medication alongside pain relievers after surgery.

Promethazine hydrochloride injection (brands including Phenergan and Promethazine HCl injection) is used for many of the same purposes but is reserved for situations where oral treatment is not possible — including allergic emergencies as an adjunct to epinephrine, sedation during labor, and as an aid during certain surgical procedures such as bronchoscopy and eye surgery.

Most-Reported Side Effects for Promethazine

From FAERS, the FDA’s public side-effect reporting system (22,614 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dependence 3,586 reports
Nausea 2,646 reports
Vomiting 1,802 reports
Fatigue 1,496 reports
Diarrhea 1,341 reports
See full Promethazine drug information
Keep checking

Other Drugs & Sodium Tetrachloroaurate

Browse every other medication we’ve checked against Sodium Tetrachloroaurate — 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 Sodium Tetrachloroaurate 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 Sodium Tetrachloroaurate list.

See the full Sodium Tetrachloroaurate interactions page
See every supplement checked against Promethazine, ranked by severity
Evidence & sources

Sodium Tetrachloroaurate References

The 3 references that drive our Sodium Tetrachloroaurate 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. Ridaura (auranofin) [package insert]. San Diego, CA: Prometheus Laboratories, Inc; 2011.
  2. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Gold Preparations. [Updated 2017 Aug 2].
  3. Eisler R. Chrysotherapy: a synoptic review. Inflamm Res. 2003;52(12):487-501. PubMed

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 Sodium Tetrachloroaurate and Promethazine Together: Common Questions

Is it safe to take Sodium Tetrachloroaurate with Promethazine?
We do not list a known interaction between Sodium Tetrachloroaurate and Promethazine. 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.
Do Sodium Tetrachloroaurate and Promethazine have any of the same side effects?
Yes — our sources link each of them separately to 7 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Does Promethazine interact with any supplements?
Yes. Promethazine has documented interactions with 83 supplements in our database — Sodium Tetrachloroaurate is not one of them. The Promethazine 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

Sodium Tetrachloroaurate monograph Uses, safety profile, and every drug interaction in one place Promethazine drug information The full plain-English guide to this medication Promethazine supplement interactions Every supplement checked against Promethazine, 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 Promethazine and Sodium Tetrachloroaurate?

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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.