Drug & supplement interaction

Anti-inflammatory Diet + 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 Anti-inflammatory Diet 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

Anti-inflammatory Diet 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 Anti-inflammatory Diet in our sources. This does not guarantee that the combination is completely free of risk — research on Anti-inflammatory Diet alongside specific medications may be limited.

Worth understanding: our licensed dataset holds no drug-interaction record for Anti-inflammatory Diet 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.

Anti-inflammatory Diet is an eating pattern rather than something you take. Ask your pharmacist or doctor before changing how you eat while on a prescribed medicine: some medicines are dosed around meals, and a change in diet can change how they work. 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.

Anti-inflammatory Diet safety at a glance

Anti-inflammatory... overall Generally safe For most people, this is a balanced, nutritious eating pattern that is safe to follow.
Pregnancy Use caution Generally healthy during pregnancy, but discuss nutrient needs and any restrictive changes with your doctor.
Breastfeeding Use caution A balanced version is usually fine, but avoid overly restrictive plans and check with your provider.

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

Still wondering about combining Phenylephrine and Anti-inflammatory Diet? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Anti-inflammatory Diet 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 following Anti-inflammatory Diet while taking the medicine can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • Nausea reported in 7.6% of FDA reports for Phenylephrine Additional detail

    Anti-inflammatory Diet

    “Gastrointestinal symptoms such as upset stomach with diarrhea, gas, heartburn, and nausea have been reported.”

    Anti-inflammatory Diet · Natural Medicines adverse-effect record, reported in diarrhea.

    1 source cited
    1. 104690. Vadell AKE, Bärebring L, Hulander E, et al. Anti-inflammatory diet in rheumatoid arthritis (ADIRA)-a randomized, controlled crossover trial indicating effects on disease activity. Am J Clin Nutr. 2020;111(6):1203-1213.

    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 Anti-inflammatory Diet but not commonly for Phenylephrine: stomach upset, heartburn and diarrhea.

Effects for Phenylephrine come from the ADVERSE REACTIONS section of its FDA label; effects for Anti-inflammatory Diet 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.

From our Q&A

Questions About Anti-inflammatory Diet 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 Anti-inflammatory Diet 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 Anti-inflammatory Diet 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

How much people look this up

Where Anti-inflammatory Diet 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 Anti-inflammatory Diet
Steady interest

#1,292 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Phenylephrine
Top 25%

#507 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 Anti-inflammatory Diet reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Anti-inflammatory Diet 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 .
Eating pattern

About Anti-inflammatory Diet

What is Anti-inflammatory Diet?

  • Joint pain and arthritis
  • Heart health
  • Reducing chronic inflammation
  • Weight management
  • General wellness and disease prevention

An anti-inflammatory diet is an eating pattern that emphasizes vegetables, fruits, whole grains, beans, nuts, fish, and olive oil while limiting processed foods, added sugar, and refined carbohydrates. It is generally safe and broadly healthy, and some evidence links it to lower inflammation markers and better heart and joint health, though it is a supportive lifestyle approach rather than a cure. Talk with your doctor or a registered dietitian before making major changes, especially if you have a medical condition.

Whole-food eating pattern (meal plans, recipes, dietary guidelines)

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

Anti-inflammatory Diet: dosing

There is no set "dose" for an anti-inflammatory diet because it is an eating pattern, not a supplement. A common approach is to fill most of your plate with vegetables, fruits, whole grains, and beans; choose fish, nuts, and olive oil as main fat and protein sources; and limit sugary drinks, refined grains, processed meats, and ultra-processed snacks.If you buy any branded "anti-inflammatory" supplements or meal products, follow the label and do not assume more is better. A registered dietitian can help tailor the plan to your needs, and your pharmacist or doctor can help if you have health conditions.

From our Anti-inflammatory Diet monograph — the full record covers uses, side effects and every documented interaction.

Read the full Anti-inflammatory Diet 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 & Anti-inflammatory Diet

Browse every other medication we’ve checked against Anti-inflammatory Diet — 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 Anti-inflammatory Diet 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 Anti-inflammatory Diet list.

See the full Anti-inflammatory Diet interactions page
See every supplement checked against Phenylephrine, ranked by severity
Evidence & sources

Anti-inflammatory Diet References

The 1 references that drive our Anti-inflammatory Diet 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. Vadell AKE, Bärebring L, Hulander E, et al. Anti-inflammatory diet in rheumatoid arthritis (ADIRA)-a randomized, controlled crossover trial indicating effects on disease activity. Am J Clin Nutr. 2020;111(6):1203-1213.

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

Following Anti-inflammatory Diet While Taking Phenylephrine: Common Questions

Is it safe to follow Anti-inflammatory Diet while taking Phenylephrine?
We do not list a known interaction between Anti-inflammatory Diet 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 Anti-inflammatory Diet 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 — Anti-inflammatory Diet 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

Anti-inflammatory Diet 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Phenylephrine and Anti-inflammatory Diet?

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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.