Drug & supplement interaction

Zone Diet + Baricitinib

Baricitinib brand name: Olumiant.

No Known Interaction
The bottom line No known interaction

We found no known interaction between Zone Diet and Baricitinib 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
Interaction report

Zone Diet and Baricitinib

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

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

Zone 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.

Zone Diet safety at a glance

Zone Diet overall Use caution Generally safe for healthy adults but it is restrictive and may not suit everyone.
Pregnancy Use caution Calorie- or carb-restricted diets may not meet pregnancy nutrient needs, so check with your doctor first.
Breastfeeding Use caution Nursing needs extra calories and nutrients, so discuss any restrictive diet with your provider.

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

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

What Baricitinib’s Own FDA Label Lists

This is not an interaction — none of it involves Zone Diet. These are the most notable effects listed in the ADVERSE REACTIONS section of Baricitinib’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 follow Zone Diet and take the medicine. 7 of them are worth acting on rather than waiting out — marked below.

  • Blood clots Worth acting on mentioned in 3.2% of FDA reports for Baricitinib
  • Low blood sugar Worth acting on
  • Anemia Worth acting on
  • A low white blood cell count Worth acting on
  • Liver problems Worth acting on
  • A higher chance of infection Worth acting on mentioned in 5.4% of FDA reports for Baricitinib
  • An allergic reaction Worth acting on
  • Acne
  • Hair loss
  • A stuffy or runny nose

Showing the 10 most notable of 16 label-listed effects — ranked by how unusual each one is across medicines generally, with serious effects weighted up.

From the ADVERSE REACTIONS section of the FDA label for Baricitinib. Read the label on DailyMed › Where a percentage is shown, it is the share of 9,585 voluntary FDA FAERS reports for Baricitinib that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Zone Diet’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Zone Diet side to compare — that is a limit of the record, not a statement that Zone Diet has no side effects.

Everything else you take

See Every Supplement That Interacts With Baricitinib

This page covers Zone Diet only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Baricitinib page lists 59 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Siberian Cocklebur (major), Wine (major) and African Wild Potato (moderate).

By severity: 4 major · 46 moderate · 9 minor.

From our pharmacist’s overview on the Baricitinib page

“Liver strain dominates this page. Baricitinib (Olumiant), a JAK inhibitor for rheumatoid arthritis and alopecia areata, can raise liver enzymes on its own, so I'd approach these combinations warily, since nearly two thirds of the listed supplements carry their own record of liver injury, and ordinary beer and wine sit among the highest…”

Reviewed by 2 · Jul 18, 2026

Open the Baricitinib interaction page

How much people look this up

Where Zone Diet and Baricitinib 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 Zone Diet
Steady interest

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

29 days ago today
Medication Baricitinib
Top half

#1,035 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 Zone Diet reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Zone Diet and Baricitinib 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 .
Eating pattern

About Zone Diet

What is Zone Diet?

  • Weight loss
  • Blood sugar control
  • Reducing inflammation
  • Heart health support
  • Improving energy and athletic performance

The Zone Diet is an eating plan, not an herb or supplement, that aims to balance every meal into roughly 40% carbohydrate, 30% protein, and 30% fat. It can help some people lose weight and improve diet quality, mostly by encouraging portion control and lean proteins, but evidence that its specific ratio is better than other balanced diets is limited. Talk with your doctor, pharmacist, or a dietitian before starting, especially if you have a medical condition.

Eating plan (whole-food meals and snacks), meal-delivery services, prepackaged bars and shakes

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

Zone Diet: dosing

There is no pill or standardized "dose" for the Zone Diet because it is an eating pattern, not a supplement. Instead, the plan is followed by structuring meals around the 40% carbohydrate, 30% protein, 30% fat idea and eating regular, portion-controlled meals and snacks.If you use Zone-branded products like bars or meals, follow the label directions.

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

Read the full Zone Diet monograph & all interactions
Medication

About Baricitinib

What Is Baricitinib Used For?

Brand name: Olumiant

Olumiant (baricitinib) tablets are approved for three conditions in adults. It treats moderately to severely active rheumatoid arthritis in people who haven't responded well enough to one or more TNF blocker medications. It also treats severe alopecia areata (significant hair loss from an autoimmune condition).

Olumiant is additionally approved to treat COVID-19 in hospitalized adults who need supplemental oxygen, mechanical ventilation, or ECMO (a machine that does the work of the heart and lungs). Each use has specific limitations — for example, Olumiant should not be combined with other JAK inhibitors or certain strong immunosuppressants for rheumatoid arthritis or alopecia areata.

Most-Reported Side Effects for Baricitinib

From FAERS, the FDA’s public side-effect reporting system (9,585 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Covid-19 449 reports
Rheumatoid arthritis 355 reports
Pulmonary embolism 309 reports
Pneumonia 282 reports
Headache 265 reports
See full Baricitinib drug information
Keep checking

Other Drugs & Zone Diet

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

Zone Diet References

The 4 references that drive our Zone 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. Fontani, G., Corradeschi, F., Felici, A., Alfatti, F., Bugarini, R., Fiaschi, A. I., Cerretani, D., Montorfano, G., Rizzo, A. M., and Berra, B. Blood profiles, body fat and mood state in healthy subjects on different diets supplemented with Omega-3 polyu
  2. Gardner CD, Kiazand A, Alhassan S, et al. Comparison of the Atkins, Zone, Ornish, and LEARN diets for change in weight and related risk factors among overweight premenopausal women: the A TO Z Weight Loss Study: a randomized trial. JAMA. 2007 Mar 7;297(9) PubMed
  3. McAuley KA, Hopkins CM, Smith KJ, et al. Comparison of high-fat and high-protein diets with a high-carbohydrate diet in insulin-resistant obese women. Diabetologia. 2005 Jan;48(1):8-16. Epub 2004 Dec 23. Erratum in: Diabetologia. 2005 May;48(5):1033.
  4. Jarvis M, McNaughton L, Seddon A, Thompson D. The acute 1-week effects of the Zone diet on body composition, blood lipid levels, and performance in recreational endurance athletes. J Strength Cond Res. 2002 Feb;16(1):50-7. DOI

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 Zone Diet While Taking Baricitinib: Common Questions

Is it safe to follow Zone Diet while taking Baricitinib?
We do not list a known interaction between Zone Diet and Baricitinib. 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 Baricitinib interact with any supplements?
Yes. Baricitinib has documented interactions with 59 supplements in our database — Zone Diet is not one of them. The Baricitinib 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 Baricitinib and Zone 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.