Drug & supplement interaction

Andarine + Ofatumumab

Ofatumumab brand name: Kesimpta.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Andarine 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.

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Interaction report

Andarine 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 Andarine 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.

Andarine safety at a glance

Andarine overall Avoid Andarine is an unapproved drug with unknown human safety and is not a legal supplement.
Pregnancy Avoid A hormone-affecting drug like this should never be used during pregnancy.
Breastfeeding Avoid It is unsafe and unstudied during breastfeeding and should be avoided.

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

Still wondering about combining Ofatumumab and Andarine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Ofatumumab

Interactions in our licensed database are recorded against drug classes, not just single drug names. Ofatumumab is filed under a single classification — immunosuppressants. Andarine has documented interactions with 1 drug class — the most serious being androgens (moderate) — and none of Ofatumumab’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Andarine Does Interact With Other Medications

Andarine has 9 moderate known drug interactions in our database — Ofatumumab isn’t one of them. If you take anything else, check it against the full list below.

Taking anything else?

Check Another of Your Medications Against Andarine

Covers the 2,830 medications we’ve checked against Andarine. Pick one to open its full report.

What to actually watch for

What Andarine Itself Has Been Linked To

This is not an interaction — nothing below involves Ofatumumab. It is the side-effect record for Andarine on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Andarine, this list is the first place to look. 2 entries are worth acting on rather than waiting out — marked below.

  • A heart attack Worth acting on Additional detail

    “Orally, selective androgen receptor modulators, such as andarine, could potentially increase the risk of myocardial infarction, stroke, and liver toxicity. However, no thorough safety evaluations of andarine have been conducted.”

    Andarine · Natural Medicines adverse-effect record, reported in myocardial infarction (mi).

    1 source cited
    1. 98840. FDA. FDA Warns against using SARMs in body building products. October 2017. Available at: https://www.fda.gov/newsevents/newsroom/fdainbrief/ucm583021.htm.

    “The FDA has warned that selective androgen receptor modulators, such as andarine, could potentially increase the risk of myocardial infarction and stroke.”

    Andarine · Natural Medicines adverse-effect record, reported in myocardial infarction (mi).

    1 source cited
    1. 98840. FDA. FDA Warns against using SARMs in body building products. October 2017. Available at: https://www.fda.gov/newsevents/newsroom/fdainbrief/ucm583021.htm.
  • Liver problems Worth acting on Additional detail

    Recorded for Andarine in the same Natural Medicines adverse-effect record shown under A heart attack above.

Everything above comes from the Natural Medicines adverse-effect record for Andarine — expand a row for the licensed statement it rests on. We haven’t matched Ofatumumab to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Ofatumumab.

Everything else you take

See Every Supplement That Interacts With Ofatumumab

This page covers Andarine 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

Open the Ofatumumab interaction page

One more smart check

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

We hold 13 real supplement products containing Andarine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Andarine. Even though Andarine 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:

How much people look this up

Where Andarine 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.

Supplement Andarine
Steady interest

#1,369 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Ofatumumab
Top half

#1,042 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 Andarine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified October 4, 2026. The Andarine and Ofatumumab 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 Andarine

What is Andarine?

Andarine
  • Muscle building
  • Strength gains
  • Fat loss / body recomposition
  • Athletic performance enhancement
  • Bone density support

Andarine (S-4) is a synthetic selective androgen receptor modulator (SARM) that is not approved by the FDA for human use and is banned in sports. It is not a legal dietary supplement ingredient, its long-term safety in people is unknown, and reported side effects include vision changes and possible liver and hormone problems. Because of these risks and its illegal status, we do not recommend using it.

Not applicable (synthetic chemical compound) · Capsules, tablets, liquid solutions (sold as research chemicals)

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

Andarine: dosing

There is no established or approved dose for Andarine because it is not a recognized medicine or legal supplement. We cannot recommend a safe dose, and doses circulated online are not backed by proper human research.Given that it is unapproved, potentially unsafe, and illegal to sell as a supplement, the safest choice is not to use it at all.

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

Read the full Andarine monograph & all interactions
Medication

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.

Fatigue 5,534 reports
Headache 4,633 reports
Fever 3,580 reports
Chills 3,483 reports
Influenza like illness 2,900 reports
See full Ofatumumab Injection (Multiple Sclerosis) drug information
Keep checking

Other Drugs & Andarine

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

0Major
9Moderate
0Minor
2,820No known interaction
Moderate

9 interactions

No interaction 2,820 drugs checked — show the list
Evidence & sources

Andarine References

The 1 references that drive our Andarine 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. FDA. FDA Warns against using SARMs in body building products. October 2017. Available at: https://www.fda.gov/newsevents/newsroom/fdainbrief/ucm583021.htm.

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 Andarine and Ofatumumab Together: Common Questions

Is it safe to take Andarine with Ofatumumab?
We do not list a known interaction between Andarine and Ofatumumab. 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.
How was the Andarine and Ofatumumab combination checked?
Interactions in our licensed database are recorded against drug classes. Ofatumumab is filed under 1 classification, and Andarine has documented interactions with 1 drug class — none of Ofatumumab's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Andarine interact with any other medications?
Yes. Andarine has 9 documented drug interactions in our database — Ofatumumab is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Ofatumumab interact with any supplements?
Yes. Ofatumumab has documented interactions with 53 supplements in our database — Andarine is not one of them. The Ofatumumab 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 Ofatumumab and Andarine?

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.