Drug & supplement interaction

N,n-dmpea + Loteprednol

Loteprednol brand names: Lotemax, Alrex.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between N,n-dmpea and Loteprednol 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.

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Interaction report

N,n-dmpea and Loteprednol

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 Loteprednol and N,n-dmpea 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.

N,n-dmpea safety at a glance

N,n-dmpea overall Use caution Human safety data are very limited, and stimulant-like effects are possible.
Pregnancy Avoid No safety data exist, so it should be avoided during pregnancy.
Breastfeeding Avoid No safety data exist, so it should be avoided while breastfeeding.

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

Still wondering about combining Loteprednol and N,n-dmpea? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
Keep it in perspective

N,n-dmpea Does Interact With Other Medications

N,n-dmpea has 193 moderate known drug interactions in our database — Loteprednol isn’t one of them. If you take anything else, check it against the full list below.

Moderate 193 No known interaction 2,637 (incl. Loteprednol)
Taking anything else?

Check Another of Your Medications Against N,n-dmpea

Covers the 2,830 medications we’ve checked against N,n-dmpea. Pick one to open its full report.

What to actually watch for

What Loteprednol’s Own FDA Label Lists

This is not an interaction — none of it involves N,n-dmpea. These are the most notable effects listed in the ADVERSE REACTIONS section of Loteprednol’s own FDA label, for the medication by itself. Knowing the drug’s own list makes it easier to work out the likely cause if something new turns up while you take both. One of them is worth acting on rather than waiting out — marked below.

  • A higher chance of infection Worth acting on
  • Eye irritation or redness
  • Dry eyes
  • A stuffy or runny nose
  • Sore throat
  • Itching
  • Headache

From the ADVERSE REACTIONS section of the FDA label for Loteprednol. Read the label on DailyMed › N,n-dmpea’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no N,n-dmpea side to compare — that is a limit of the record, not a statement that N,n-dmpea has no side effects.

Overlapping uses

What Loteprednol Is Prescribed For, and What N,n-dmpea Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Loteprednol is a prescription medicine with approved uses on its FDA label. N,n-dmpea is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Loteprednol is prescribed for: Loteprednol ophthalmic suspension is used to treat steroid-responsive inflammatory conditions of the eye, including allergic conjunctivitis, iritis (inflammation inside the eye), cyclitis, superficial punctate keratitis, herpes zoster keratitis, acne rosacea affecting the eye, and certain types of infectious conjunctivitis — when reducing swelling and inflammation is important enough to accept the risks of steroid use. Loteprednol ophthalmic suspension is also used to treat inflammation after eye surgery. Eysuvis (loteprednol etabonate ophthalmic suspension) is specifically indicated for short-term use of up to two weeks for these inflammatory conditions.

N,n-dmpea has been studied for:

  • Dry eye studied, not established N,n-dmpea has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    N,n-dmpea for dry eye

    Preliminary clinical research in 14 patients with dry eye syndrome shows that applying 1-2 drops of 15% N,N-DMPEA (AF2975, Angelini Pharmaceuticals, Inc.) into the eye four times daily for 21 days improves tear composition when compared with placebo.

    1 source cited
    1. 95470. Schoenwald RD, Vidvauns S, Wurster DE, Barfknecht CF. Tear film stability of protein extracts from dry eye patients administered a sigma agonist. J Ocul Pharmacol Ther 1997;13(2):151-61. PubMed

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Loteprednol on your own; if you are taking N,n-dmpea for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

How much people look this up

Where N,n-dmpea and Loteprednol 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 N,n-dmpea
Steady interest

#1,400 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Loteprednol
Top 25%

#604 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 N,n-dmpea reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The N,n-dmpea and Loteprednol records this page draws on were last updated June 22, 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 N,n-dmpea

What is N,n-dmpea?

  • Mood or energy support
  • Pre-workout or stimulant effect
  • Cognitive or focus support

N,N-DMPEA (N,N-dimethylphenethylamine) is a synthetic relative of phenethylamine sometimes marketed in stimulant or pre-workout supplements. There is very little reliable human research on its effects or safety, and it is not a well-established dietary ingredient, so it should be approached with real caution.

Powder, capsules, research chemical

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

N,n-dmpea: dosing

There is no established or standardized safe dose of N,N-DMPEA. Because it has not been properly studied in humans, no reliable dosing guidance exists.If a product contains it, follow the product label, but understand that label amounts may not be accurate or safe.

From our N,n-dmpea monograph — the full record covers uses, side effects and every documented interaction.

Read the full N,n-dmpea monograph & all interactions
Medication

About Loteprednol Ophthalmic

What Is Loteprednol Ophthalmic Used For?

Brand names: Lotemax, Alrex

Loteprednol ophthalmic suspension is used to treat steroid-responsive inflammatory conditions of the eye, including allergic conjunctivitis, iritis (inflammation inside the eye), cyclitis, superficial punctate keratitis, herpes zoster keratitis, acne rosacea affecting the eye, and certain types of infectious conjunctivitis — when reducing swelling and inflammation is important enough to accept the risks of steroid use.

Loteprednol ophthalmic suspension is also used to treat inflammation after eye surgery. Eysuvis (loteprednol etabonate ophthalmic suspension) is specifically indicated for short-term use of up to two weeks for these inflammatory conditions.

See full Loteprednol Ophthalmic drug information
Keep checking

Other Drugs & N,n-dmpea

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

0Major
193Moderate
0Minor
2,636No known interaction
193 Moderate 2,636 No interaction
Moderate

193 interactions

Showing 60 of 193 moderate interactions — see all 193 on the N,n-dmpea page.

No interaction 2,636 drugs checked — show the list

We also checked N,n-dmpea against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,636 medications checked with no known interaction — see the full N,n-dmpea list.

See the full N,n-dmpea interactions page
See every supplement checked against Loteprednol, ranked by severity
Evidence & sources

N,n-dmpea References

The 2 references that drive our N,n-dmpea 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. Liu Y, Santillo MF. Cytochrome P450 2D6 and 3A4 enzyme inhibition by amine stimulants in dietary supplements. Drug Test Anal. 2016;8(3-4):307-10. PubMed
  2. Schoenwald RD, Vidvauns S, Wurster DE, Barfknecht CF. Tear film stability of protein extracts from dry eye patients administered a sigma agonist. J Ocul Pharmacol Ther 1997;13(2):151-61. 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 N,n-dmpea and Loteprednol Together: Common Questions

Is it safe to take N,n-dmpea with Loteprednol?
We do not list a known interaction between N,n-dmpea and Loteprednol. 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.
Are N,n-dmpea and Loteprednol used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for N,n-dmpea in each. That is a conversation for your prescriber, especially if Loteprednol is being adjusted to a target.
Does N,n-dmpea interact with any other medications?
Yes. N,n-dmpea has 193 documented drug interactions in our database — Loteprednol is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

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

Where next

Keep Exploring

N,n-dmpea monograph Uses, safety profile, and every drug interaction in one place Loteprednol Ophthalmic drug information The full plain-English guide to this medication Loteprednol supplement interactions Every supplement checked against Loteprednol, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

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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.