Drug & supplement interaction

Sugar Busters Diet + Gefitinib

Gefitinib brand name: Iressa.

No Known Interaction
Medically reviewed by · Updated June 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Sugar Busters Diet and Gefitinib 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

Sugar Busters Diet and Gefitinib

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

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

Sugar Busters 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.

Sugar Busters Diet safety at a glance

Sugar Busters Diet overall Use caution Generally reasonable for many adults, but anyone with a medical condition should check with a doctor or dietitian first.
Pregnancy Use caution Pregnancy is not the time for restrictive dieting; discuss any eating plan with your prenatal provider.
Breastfeeding Use caution Nursing parents need enough calories and nutrients, so consult your doctor before restricting food groups.

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

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

What Gefitinib’s Own FDA Label Lists

This is not an interaction — none of it involves Sugar Busters Diet. These are the most notable effects listed in the ADVERSE REACTIONS section of Gefitinib’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 Sugar Busters Diet and take the medicine. 10 of them are worth acting on rather than waiting out — marked below.

  • Dehydration Worth acting on
  • Blood clots Worth acting on
  • Pancreatitis Worth acting on
  • A severe skin reaction Worth acting on
  • Kidney problems Worth acting on
  • A severe allergic reaction Worth acting on
  • Hives Worth acting on
  • Liver problems Worth acting on
  • Bleeding or bruising Worth acting on
  • A higher chance of infection Worth acting on

Showing the 10 most notable of 27 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 Gefitinib. Read the label on DailyMed › Where a percentage is shown, it is the share of 8,974 voluntary FDA FAERS reports for Gefitinib that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Sugar Busters Diet’s licensed record lists no adverse effects our clinical vocabulary could match, so there is no Sugar Busters Diet side to compare — that is a limit of the record, not a statement that Sugar Busters Diet has no side effects.

Everything else you take

See Every Supplement That Interacts With Gefitinib

This page covers Sugar Busters Diet only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Gefitinib page lists 168 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Beer (major), Grapefruit (major), Siberian Cocklebur (major) and St. John's Wort (major).

By severity: 6 major · 124 moderate · 38 minor.

Open the Gefitinib interaction page

How much people look this up

Where Sugar Busters Diet and Gefitinib 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 Sugar Busters Diet
Steady interest

#1,031 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Gefitinib
Steady interest

#2,461 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. Sugar Busters Diet 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 Sugar Busters Diet reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Sugar Busters Diet and Gefitinib 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 Sugar Busters Diet

What is Sugar Busters Diet?

  • Weight loss
  • Blood sugar control
  • Type 2 diabetes management
  • Lowering cholesterol and triglycerides
  • Reducing refined sugar intake

The Sugar Busters Diet is an eating plan, not a herb or supplement. It encourages cutting refined sugar and high-glycemic carbohydrates while focusing on lean proteins, whole grains, vegetables, and healthy fats. It may help some people lose weight and improve blood sugar, but it works mainly because it cuts calories and refined carbs—talk to your doctor or dietitian before starting any new diet.

Books, meal plans, low-glycemic food choices

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

Sugar Busters Diet: dosing

There is no "dose" for the Sugar Busters Diet because it is an eating pattern, not a pill. Instead, people follow the plan's guidelines on which foods to choose and which to limit, focusing on low-glycemic, whole foods.The healthiest approach is to aim for balanced meals with vegetables, lean protein, healthy fats, and high-fiber whole grains, while limiting added sugar and refined carbs.

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

Read the full Sugar Busters Diet monograph & all interactions
Medication

About Gefitinib

What Is Gefitinib Used For?

Brand name: Iressa

Gefitinib tablets — sold under the brand name Iressa — are used as a first-line treatment for metastatic non-small cell lung cancer (NSCLC). This treatment is only for patients whose tumors carry specific changes (mutations) in the EGFR gene: either an exon 19 deletion or an exon 21 (L858R) substitution mutation, confirmed by an FDA-approved test.

This medicine is not established as safe or effective for NSCLC patients with other types of EGFR mutations. Your doctor will use a genetic test on your tumor or blood to confirm whether gefitinib is right for you.

Most-Reported Side Effects for Gefitinib

From FAERS, the FDA’s public side-effect reporting system (8,974 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Malignant neoplasm progression 1,821 reports
Drug resistance 1,251 reports
Diarrhea 904 reports
Rash 643 reports
Disease progression 461 reports
See full Gefitinib drug information
Keep checking

Other Drugs & Sugar Busters Diet

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

See the full Sugar Busters Diet interactions page
See every supplement checked against Gefitinib, ranked by severity
Evidence & sources

Sugar Busters Diet References

The 1 sources that drive our Sugar Busters Diet monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Sugar Busters Diet is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.

  1. Carbohydrates and the glycemic index — MedlinePlus Source

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 Sugar Busters Diet While Taking Gefitinib: Common Questions

Is it safe to follow Sugar Busters Diet while taking Gefitinib?
We do not list a known interaction between Sugar Busters Diet and Gefitinib. 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 Gefitinib interact with any supplements?
Yes. Gefitinib has documented interactions with 168 supplements in our database — Sugar Busters Diet is not one of them. The Gefitinib 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

Sugar Busters Diet monograph Uses, safety profile, and every drug interaction in one place Gefitinib drug information The full plain-English guide to this medication Gefitinib supplement interactions Every supplement checked against Gefitinib, 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 1 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Gefitinib and Sugar Busters Diet?

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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.