Reed Herb + Ofatumumab
Ofatumumab brand name: Kesimpta.
We found no known interaction between Reed Herb and Ofatumumab 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.
Reed Herb and Ofatumumab
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 Ofatumumab and Reed Herb 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 Reed Herb at all — not against Ofatumumab, 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.
Reed Herb safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
What Ofatumumab Is Prescribed For, and What Reed Herb Has Been Studied For
These two come up together because they touch the same health topic — not because they do the same job. Ofatumumab is a prescription medicine with approved uses on its FDA label. Reed Herb is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.
Ofatumumab is prescribed for: Kesimpta is used to treat relapsing forms of multiple sclerosis (MS) in adults. This includes clinically isolated syndrome (a first MS episode), relapsing-remitting MS (the most common form, with flares followed by recovery periods), and active secondary progressive MS (when the disease slowly worsens but still has active flares). It is designed to reduce relapses and slow disease activity by targeting certain immune cells believed to drive MS damage.
Reed Herb has been studied for:
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Leukemia studied, not established Reed Herb has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows
Reed Herb for leukemia
Although there has been interest in using oral reed herb for leukemia, there is insufficient reliable information about the clinical effects of reed herb for this purpose.
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 Ofatumumab on your own; if you are taking Reed Herb for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.
See Every Supplement That Interacts With Ofatumumab
This page covers Reed Herb only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Ofatumumab page lists 53 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Active Hexose Correlated Compound (ahcc) (moderate), Alfalfa (moderate), American Ginseng (moderate), Andrographis (moderate) and Ashwagandha (moderate).
By severity: 52 moderate · 1 minor.
From our pharmacist’s overview on the Ofatumumab page
“Kesimpta (ofatumumab) treats multiple sclerosis by deliberately quieting part of the immune system, and all 53 supplements on this page raise the same worry from the opposite direction. Each is thought to stimulate immune activity, which could in theory blunt what the drug is trying to do.”
Reviewed by 2 · Jul 18, 2026
Taking Reed Herb as Part of a Dietary Supplement Product? Check It for Interactions
We hold 57 real supplement products containing Reed Herb, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Reed Herb. Even though Reed Herb itself has no known interaction with Ofatumumab, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Reed Herb and Ofatumumab 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.
#1,037 of 1,452 supplements looked up here in the last 7 days
#2,148 of 2,830 medications looked up here in the last 7 days
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. Reed Herb is not yet covered by that licensed database, so its write-up cites publicly available medical sources directly (see the references below).
- Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Reed Herb reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Reed Herb and Ofatumumab records this page draws on were last updated July 3, 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.
About Reed Herb
What is Reed Herb?
- Digestive upset
- Nausea and vomiting
- Diuretic (increasing urine)
- Promoting sweating during fevers
- Clearing heat (traditional use)
Reed herb (Phragmites australis) is a tall grass whose stems and roots have long been used in traditional medicine, especially for digestive complaints, fever, and as a mild diuretic. Modern scientific evidence in people is very limited, so its benefits are not well proven. If you want to try it, talk with a pharmacist or doctor first, and avoid it during pregnancy and breastfeeding due to a lack of safety data.
Phragmites australis · Poaceae · Stem and rhizome (root) · Tea, decoction, dried herb, powder
An interaction check asks whether these two react with each other — it does not ask whether Reed Herb is a good idea for someone in your situation. Here is what our Reed Herb record says about it on its own.
Reed Herb: dosing
There is no standardized, well-established dose for reed herb. Traditional preparations are usually made as a decoction or tea from the dried stem or rhizome, but the right amount can vary widely.If you choose to use a commercial product, follow the directions on the label and do not take more than recommended.
From our Reed Herb monograph — the full record covers uses, side effects and every documented interaction.
About Ofatumumab Injection (Multiple Sclerosis)
What Is Ofatumumab Injection (Multiple Sclerosis) Used For?
Brand name: Kesimpta
Kesimpta is used to treat relapsing forms of multiple sclerosis (MS) in adults. This includes clinically isolated syndrome (a first MS episode), relapsing-remitting MS (the most common form, with flares followed by recovery periods), and active secondary progressive MS (when the disease slowly worsens but still has active flares).
It is designed to reduce relapses and slow disease activity by targeting certain immune cells believed to drive MS damage.
Most-Reported Side Effects for Ofatumumab
From FAERS, the FDA’s public side-effect reporting system (33,037 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Reed Herb
Browse every other medication we’ve checked against Reed Herb — both the ones with a known interaction and the ones without. Select any drug for the full detail.
No drugs match “”.
No interaction 2,829 drugs checked — show the list
We also checked Reed Herb against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Losartan Potassium ›
- Testosterone ›
- Ivermectin ›
- Abemaciclib ›
- Aspirin ›
- Metoprolol ›
- Acetaminophen ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Valacyclovir ›
- Warfarin Sodium ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Lisinopril ›
- Amoxicillin ›
- Isotretinoin ›
- Methotrexate ›
- Amlodipine Besylate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Fluoxetine ›
- Doxycycline ›
- Acyclovir ›
- Azithromycin ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Quetiapine ›
- Clonazepam ›
- Levothyroxine, Liothyronine ›
- Naproxen ›
- Omeprazole ›
- Letrozole ›
- Methylene Blue ›
- Duloxetine ›
- Buspirone ›
- Citalopram ›
Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Reed Herb list.
Reed Herb References
The 2 sources that drive our Reed Herb monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Reed Herb is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
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.
Taking Reed Herb and Ofatumumab Together: Common Questions
Is it safe to take Reed Herb with Ofatumumab?
Are Reed Herb and Ofatumumab used for the same thing?
Does Ofatumumab interact with any supplements?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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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.