Drug & supplement interaction

Indium + Phenylephrine

Phenylephrine brand names: Gilchew, AH Chew D, Gilchew IR, Sudafed PE, Biorphen.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Oct 4, 2026
The bottom line No known interaction

We found no known interaction between Indium and Phenylephrine 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

Indium and Phenylephrine

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 Phenylephrine and Indium 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 Indium at all — not against Phenylephrine, 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.

Indium safety at a glance

Indium overall Avoid Indium is not an essential nutrient and lacks reliable human safety or benefit data.
Pregnancy Possibly Unsafe When used orally. The effect of indium on the fetus or breast-feeding newborn is not known; however, indium compounds are thought to be toxic to many organ syst... Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally. The effect of indium on the fetus or breast-feeding newborn is not known; however, indium compounds are thought to be toxic to many organ syst... 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 Phenylephrine and Indium? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Indium and Phenylephrine May Share a Side Effect

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. One of them is worth acting on rather than waiting out — marked below.

  • Shortness of breath Worth acting on reported in 6.2% of FDA reports for Phenylephrine Additional detail

    Indium

    “Occupational exposure to indium by inhalation can lead to potentially fatal interstitial lung disease, characterized by pulmonary alveolar proteinosis, progressing to fibrosis with or without emphysema. The disease develops slowly with shortness of breath, chest tightness and pain, dry cough, dyspnea, and deteriorating pulmonary function tests.”

    Indium · Natural Medicines adverse-effect record, reported in chronic obstructive pulmonary disease (copd).

    2 sources cited
    1. 111188. Tsao YC, Fan HY, Luo JJ. Case reports of indium lung disease in Taiwan. J Formos Med Assoc. 2021 Feb;120(2):893-8. PubMed
    2. 111189. Yang J, Zhang W, Feng J. Low serum indium levels induce expression disorders of some inflammatory factors. Int Arch Occup Environ Health. 2021 Jan;94(1):23-30. PubMed

    Phenylephrine

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

Reported for Indium but not commonly for Phenylephrine: chest pain and cough.

Effects for Phenylephrine come from the ADVERSE REACTIONS section of its FDA label; effects for Indium come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 221,388 voluntary FDA FAERS reports for Phenylephrine 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

Indium in Pregnancy & Breastfeeding

Pregnancy And Lactation Possibly Unsafe

When used orally. The effect of indium on the fetus or breast-feeding newborn is not known; however, indium compounds are thought to be toxic to many organ systems; avoid using. ...when indium (In-111) pentetreotide is used intravenously. It is not known if it can harm the fetus, or if it is excreted in breast milk.

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 Indium or Phenylephrine

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

This page covers Indium only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Phenylephrine page lists 81 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Ephedra (major), Lithium (major), Peyote (major) and Rauvolfia Vomitoria (major).

By severity: 6 major · 60 moderate · 15 minor.

From our pharmacist’s overview on the Phenylephrine page

“If you take phenylephrine (Sudafed PE, Biorphen) for congestion, treat this list as one that needs real attention, since six of its 81 entries carry a major rating. Phenylephrine tightens blood vessels to clear your nose, and more than half of the interactions here come from stimulant ingredients, ephedra above all, that can push blood…”

Reviewed by 2 · Jul 18, 2026

Open the Phenylephrine interaction page

One more smart check

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

We hold 53 real supplement products containing Indium, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Indium. Even though Indium itself has no known interaction with Phenylephrine, 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 Indium and Phenylephrine 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 Indium
Steady interest

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

29 days ago today
Medication Phenylephrine
Top 25%

#418 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 Indium reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Indium and Phenylephrine 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 Indium

What is Indium?

  • Anti-aging
  • Boosting energy
  • Supporting hormone or gland function
  • General 'wellness' or trace mineral supplementation

Indium is a metallic chemical element sometimes sold as a liquid 'trace mineral' supplement with bold anti-aging and energy claims, but it is not a recognized essential nutrient and there is no reliable human evidence that it offers any health benefit. Because safety data are very limited and it is a heavy metal, most people should avoid it and talk with a pharmacist or doctor first.

Not a plant; a chemical element (indium) sold as a mineral supplement · Liquid 'indium sulfate' drops, sometimes capsules

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

Indium: dosing

There is no established or recommended dose for indium, because it is not an essential nutrient and has no proven benefit. Products that contain it are not standardized, and label amounts vary.We do not recommend a specific dose. In general, the safest choice is to avoid it.

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

Read the full Indium monograph & all interactions
Medication

About Phenylephrine

What Is Phenylephrine Used For?

Brand names: Gilchew, AH Chew D, Gilchew IR, Sudafed PE, Biorphen

Phenylephrine is used in several different products, and each one has its own use.

Injection (IV): raises blood pressure in adults with clinically important hypotension (low blood pressure) caused mainly by widened blood vessels. Some injections are labeled for anesthesia only. Others are labeled for anesthesia and septic shock.

Eye drops: Phenylephrine Hydrochloride Ophthalmic Solution is used to dilate the pupil.

Nasal products: temporarily relieve nasal and sinus congestion from the common cold, hay fever or other upper respiratory allergies.

Rectal suppositories: relieve itching, burning and discomfort from hemorrhoids and temporarily shrink hemorrhoidal tissue.

Most-Reported Side Effects for Phenylephrine

From FAERS, the FDA’s public side-effect reporting system (221,388 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 20,609 reports
Headache 17,301 reports
Nausea 16,925 reports
Diarrhea 14,221 reports
Dyspnea 13,719 reports
See full Phenylephrine drug information
Keep checking

Other Drugs & Indium

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

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

Indium References

The 5 references that drive our Indium 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. Miyaki K, Hosoda K, Hirata M, et al. Biological monitoring of indium by means of graphite furnace atomic absorption spectrophotometry in workers exposed to particles of indium compounds. J Occup Health 2003;45:228-30. PubMed
  2. Indium. Material Safety Data Sheet. Science Lab, October 2005.
  3. Indium In-111 pentetreotide injection (OctreoScan) Package Insert. Curium US LLC, Maryland Heights, MO. 2018. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=93d8f3b2-1216-41dc-a63d-0e812b33891d. Accessed April 25, 2020.
  4. Tsao YC, Fan HY, Luo JJ. Case reports of indium lung disease in Taiwan. J Formos Med Assoc. 2021 Feb;120(2):893-8. PubMed
  5. Yang J, Zhang W, Feng J. Low serum indium levels induce expression disorders of some inflammatory factors. Int Arch Occup Environ Health. 2021 Jan;94(1):23-30. 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 Indium and Phenylephrine Together: Common Questions

Is it safe to take Indium with Phenylephrine?
We do not list a known interaction between Indium and Phenylephrine. 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 Indium and Phenylephrine have any of the same side effects?
Yes — our sources link each of them separately to one 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 Phenylephrine interact with any supplements?
Yes. Phenylephrine has documented interactions with 81 supplements in our database — Indium is not one of them. The Phenylephrine 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

Indium monograph Uses, safety profile, and every drug interaction in one place Phenylephrine drug information The full plain-English guide to this medication Phenylephrine supplement interactions Every supplement checked against Phenylephrine, 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 5 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Phenylephrine and Indium?

Our pharmacists answer your medication & supplement questions — free.

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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.