Drug & supplement interaction

Macrobiotic Diet + Cobimetinib Fumarate

Cobimetinib Fumarate brand name: Cotellic.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Macrobiotic Diet and Cobimetinib Fumarate 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.

Know someone interested in this? Share
Facebook Post Reddit Email
On this page
Interaction report

Macrobiotic Diet and Cobimetinib Fumarate

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 Cobimetinib Fumarate and Macrobiotic Diet in our sources. This does not guarantee that the combination is completely free of risk — research on Macrobiotic Diet alongside specific medications may be limited.

Worth understanding: our licensed dataset holds no drug-interaction record for Macrobiotic Diet at all — not against Cobimetinib Fumarate, 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.

Macrobiotic 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.

Macrobiotic Diet safety at a glance

Macrobiotic Diet overall Use caution Balanced versions can be healthy, but strict versions may cause nutrient deficiencies.
Pregnancy Use caution Strict versions may not provide enough protein, calories, or key nutrients; medical supervision is advised.
Breastfeeding Use caution Nursing parents need adequate calories and nutrients, so strict versions should be supervised by a clinician.

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

Still wondering about combining Cobimetinib Fumarate and Macrobiotic Diet? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

What Macrobiotic Diet Itself Has Been Linked To

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

  • Bone thinning Worth acting on Additional detail

    “The macrobiotic diet has been associated with increased risk of rickets and osteoporosis, likely due to calcium and vitamin D deficiency. Following a strict macrobiotic diet that does not include additional intake of fish and fat has also been associated with reduced height for age in children less than 8-years-old.”

    Macrobiotic Diet · Natural Medicines adverse-effect record, reported in bone loss.

    1 source cited
    1. 27952. Dagnelie PC, Van Dusseldorp M, Van Staveren WA, Hautvast JG. Effects of macrobiotic diets on linear growth in infants and children until 10 years of age. Eur J Clin Nutr 1994;48 Suppl 1:S103-S111.

Everything above comes from the Natural Medicines adverse-effect record for Macrobiotic Diet — expand a row for the licensed statement it rests on. We read the ADVERSE REACTIONS section of Cobimetinib Fumarate’s FDA label too, and the two lists don’t meaningfully overlap — which is why no Cobimetinib Fumarate column appears here.

Overlapping uses

What Cobimetinib Fumarate Is Prescribed For, and What Macrobiotic Diet Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Cobimetinib Fumarate is a prescription medicine with approved uses on its FDA label. Macrobiotic Diet is an eating pattern: what follows is what researchers have looked at it for, and how strong that evidence is.

Cobimetinib Fumarate is prescribed for: Cobimetinib is approved for two uses in adults. First, it is used in combination with another drug called vemurafenib to treat melanoma (a type of skin cancer) that cannot be surgically removed or has spread to other parts of the body — but only when the tumor carries a specific genetic change called a BRAF V600E or V600K mutation. A lab test must confirm this mutation before treatment begins. Second, cobimetinib can be used on its own (as a single agent) to treat adults with histiocytic neoplasms — a rare group of cancers involving immune cells called histiocytes.

Macrobiotic Diet has been studied for:

  • Cancer studied, not established Macrobiotic Diet has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Macrobiotic Diet for cancer

    Although there has been interest in using the macrobiotic diet for various cancers, including colon cancer, there is insufficient reliable information about the clinical effects of the macrobiotic diet for these conditions.

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 Cobimetinib Fumarate on your own; if you are taking Macrobiotic Diet for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Macrobiotic Diet or Cobimetinib Fumarate

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Macrobiotic Diet or Cobimetinib Fumarate, 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 Cobimetinib Fumarate

This page covers Macrobiotic Diet only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cobimetinib Fumarate page lists 138 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Adrafinil (moderate).

By severity: 3 major · 94 moderate · 41 minor.

From our pharmacist’s overview on the Cobimetinib Fumarate page

“If you are on cobimetinib (Cotellic) for melanoma, be strict about supplements, because this list carries real weight. The drug is cleared by the liver enzyme CYP3A4, and nearly all 138 flagged ingredients can push its blood level up or down through that pathway.”

Reviewed by 2 · Jul 18, 2026

Open the Cobimetinib Fumarate interaction page

How much people look this up

Where Macrobiotic Diet and Cobimetinib Fumarate 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 Macrobiotic Diet
Steady interest

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

29 days ago today
Medication Cobimetinib Fumarate
Top 25%

#516 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 Macrobiotic Diet reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Macrobiotic Diet and Cobimetinib Fumarate 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 Macrobiotic Diet

What is Macrobiotic Diet?

  • General wellness and longevity
  • Cancer prevention and support (popular belief)
  • Heart health
  • Weight management
  • Digestive health

The macrobiotic diet is a plant-based eating pattern centered on whole grains, vegetables, and beans, with limited animal products and processed foods. Some versions can be healthy, but strict versions risk nutrient shortfalls, and there is no strong proof it treats or cures diseases like cancer. Talk to your doctor or a dietitian before starting, especially if you have a health condition.

Whole-food eating plan based on whole grains, vegetables, and legumes

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

Macrobiotic Diet: dosing

There is no standard dose for a diet. Instead, macrobiotic eating is about food choices and proportions, often with grains making up a large share of meals and vegetables and beans filling the rest.If you want to try this way of eating, choose a balanced version, include a variety of foods, and avoid the most restrictive forms. Many people on plant-based diets need a vitamin B12 supplement, and possibly vitamin D, calcium, iron, or omega-3s. A registered dietitian can help you plan meals and decide which supplements you may need.

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

Read the full Macrobiotic Diet monograph & all interactions
Medication

About Cobimetinib

What Is Cobimetinib Used For?

Brand name: Cotellic

Cobimetinib is approved for two uses in adults. First, it is used in combination with another drug called vemurafenib to treat melanoma (a type of skin cancer) that cannot be surgically removed or has spread to other parts of the body — but only when the tumor carries a specific genetic change called a BRAF V600E or V600K mutation. A lab test must confirm this mutation before treatment begins.

Second, cobimetinib can be used on its own (as a single agent) to treat adults with histiocytic neoplasms — a rare group of cancers involving immune cells called histiocytes.

See full Cobimetinib drug information
Keep checking

Other Drugs & Macrobiotic Diet

Browse every other medication we’ve checked against Macrobiotic 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 Macrobiotic 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 Macrobiotic Diet list.

See the full Macrobiotic Diet interactions page
See every supplement checked against Cobimetinib Fumarate, ranked by severity
Evidence & sources

Macrobiotic Diet References

The 3 references that drive our Macrobiotic 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. Van Staveren WA, Dagnelie PC. Food consumption, growth, and development of Dutch children fed on alternative diets. Am J Clin Nutr 1988;48(3 Suppl):819-21. PubMed
  2. Louwman MW, Van Dusseldorp M, van de Vijver FJ, et al. Signs of impaired cognitive function in adolescents with marginal cobalamin status. Am J Clin Nutr 2000;72(3):762-9. PubMed
  3. Dagnelie PC, Van Dusseldorp M, Van Staveren WA, Hautvast JG. Effects of macrobiotic diets on linear growth in infants and children until 10 years of age. Eur J Clin Nutr 1994;48 Suppl 1:S103-S111.

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 Macrobiotic Diet While Taking Cobimetinib Fumarate: Common Questions

Is it safe to follow Macrobiotic Diet while taking Cobimetinib Fumarate?
We do not list a known interaction between Macrobiotic Diet and Cobimetinib Fumarate. 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 Macrobiotic Diet and Cobimetinib Fumarate 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 Macrobiotic Diet in each. That is a conversation for your prescriber, especially if Cobimetinib Fumarate is being adjusted to a target.
Does Cobimetinib Fumarate interact with any supplements?
Yes. Cobimetinib Fumarate has documented interactions with 138 supplements in our database — Macrobiotic Diet is not one of them. The Cobimetinib Fumarate 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

Macrobiotic Diet monograph Uses, safety profile, and every drug interaction in one place Cobimetinib drug information The full plain-English guide to this medication Cobimetinib Fumarate supplement interactions Every supplement checked against Cobimetinib Fumarate, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cobimetinib Fumarate and Macrobiotic Diet?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.