Drug & supplement interaction

Scarlet Pimpernel + Lorcaserin

Lorcaserin brand name: Belviq.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Scarlet Pimpernel and Lorcaserin 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

Scarlet Pimpernel and Lorcaserin

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 Lorcaserin and Scarlet Pimpernel 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 Scarlet Pimpernel at all — not against Lorcaserin, 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.

Scarlet Pimpernel safety at a glance

Scarlet Pimpernel overall Use caution It contains potentially toxic compounds and is not well studied, so internal use is generally discouraged.
Pregnancy Likely Unsafe When used orally or topically long-term. Scarlet pimpernel shows evidence of uterine stimulant activity. Read the full pregnancy detail
Breastfeeding Possibly Unsafe When used orally or topically long-term; avoid using. 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 Lorcaserin and Scarlet Pimpernel? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
Special populations

Scarlet Pimpernel in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally or topically long-term. Scarlet pimpernel shows evidence of uterine stimulant activity.

Lactation Possibly Unsafe

When used orally or topically long-term; 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

Everything else you take

See Every Supplement That Interacts With Lorcaserin

This page covers Scarlet Pimpernel only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Lorcaserin page lists 40 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Lithium (major), 5-htp (moderate), Acetyl-l-carnitine (moderate) and Ayahuasca (moderate).

By severity: 2 major · 27 moderate · 11 minor.

From our pharmacist’s overview on the Lorcaserin page

“Lorcaserin (Belviq) curbs appetite by stimulating serotonin receptors, which is exactly why I would slow down before pairing it with supplements. Half the entries below also push serotonin higher, and stacking them can edge toward serotonin syndrome, a dangerous serotonin overload.”

Reviewed by 2 · Jul 18, 2026

Open the Lorcaserin interaction page

How much people look this up

Where Scarlet Pimpernel and Lorcaserin 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 Scarlet Pimpernel
Steady interest

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

29 days ago today
Medication Lorcaserin
Top half

#1,155 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 Scarlet Pimpernel reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Scarlet Pimpernel and Lorcaserin 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 Scarlet Pimpernel

What is Scarlet Pimpernel?

  • Skin conditions and wounds
  • Liver and gallbladder complaints
  • Respiratory ailments
  • Mild mood or 'melancholy' (folk use)
  • Urinary complaints

Scarlet Pimpernel is a small wild flowering plant with a long history in folk medicine, but there is very little modern scientific evidence to support any of its uses. It contains compounds called saponins that can be irritating and potentially toxic, so it is generally not recommended for internal use. If you are considering it, talk with a pharmacist or doctor first.

Lysimachia arvensis · Primulaceae · Aerial parts (leaves, flowers, and stems) · Dried herb, tinctures, infusions, and topical preparations

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

Scarlet Pimpernel: dosing

There is no established, standardized safe dose for Scarlet Pimpernel. Because of its potential toxicity and the lack of quality research, no specific milligram amount can be recommended.If you find a commercial product, follow the label directions exactly and do not exceed them.

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

Read the full Scarlet Pimpernel monograph & all interactions
Medication

About Lorcaserin

What Is Lorcaserin Used For?

Brand name: Belviq

  • Lorcaserin is used to help adults who are obese or who are overweight and have weight-related medical problems to lose weight and keep from gaining back that weight. Lorcaserin must be used along with a reduced calorie diet and an exercise plan. Lorcaserin is in a class of medications called serotonin receptor agonists. It works by increasing feelings of fullness so that less food is eaten.

See full Lorcaserin drug information
Keep checking

Other Drugs & Scarlet Pimpernel

Browse every other medication we’ve checked against Scarlet Pimpernel — 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
No interaction 2,829 drugs checked — show the list
Evidence & sources

Scarlet Pimpernel References

The 1 references that drive our Scarlet Pimpernel 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. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

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 Scarlet Pimpernel and Lorcaserin Together: Common Questions

Is it safe to take Scarlet Pimpernel with Lorcaserin?
We do not list a known interaction between Scarlet Pimpernel and Lorcaserin. 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.
Does Lorcaserin interact with any supplements?
Yes. Lorcaserin has documented interactions with 40 supplements in our database — Scarlet Pimpernel is not one of them. The Lorcaserin interaction page linked on this page lists every one, ranked by severity.

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

Still Have a Question About Lorcaserin and Scarlet Pimpernel?

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.