Alpha Hydroxy Acids (ahas) + Lapatinib
Lapatinib brand name: Tykerb.
We found no known interaction between Alpha Hydroxy Acids (ahas) and Lapatinib 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.
Alpha Hydroxy Acids (ahas) and Lapatinib
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 Lapatinib and Alpha Hydroxy Acids (ahas) 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 Alpha Hydroxy Acids (ahas) at all — not against Lapatinib, 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.
Alpha Hydroxy Acids (ahas) safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
See Every Supplement That Interacts With Lapatinib
This page covers Alpha Hydroxy Acids (ahas) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Lapatinib page lists 143 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 · 100 moderate · 40 minor.
From our pharmacist’s overview on the Lapatinib page
“Of the 143 supplements on file for lapatinib (Tykerb), nearly all press on the same point, the CYP3A4 enzyme that clears this HER2-targeted breast cancer drug. That deserves real caution, since lapatinib only works when its blood level stays in range.”
Reviewed by 2 · Jul 18, 2026
Where Alpha Hydroxy Acids (ahas) and Lapatinib 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.
#1,385 of 1,452 supplements looked up here in the last 7 days
#1,780 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. Alpha Hydroxy Acids (ahas) 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 Alpha Hydroxy Acids (ahas) reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Alpha Hydroxy Acids (ahas) and Lapatinib 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.
About Alpha Hydroxy Acids (ahas)
What is Alpha Hydroxy Acids (ahas)?
- Skin exfoliation
- Anti-aging / wrinkles
- Acne
- Dry or rough skin
- Uneven skin tone and dark spots
Alpha hydroxy acids (AHAs) are a group of acids, such as glycolic, lactic, and malic acid, most often used on the skin to exfoliate, smooth texture, and reduce signs of aging. They are best studied as topical skincare ingredients and can cause irritation and sun sensitivity. Talk with a pharmacist or dermatologist before starting, especially if you have sensitive skin or are pregnant.
Naturally derived from fruits, milk, and sugarcane, or made synthetically · Topical creams, lotions, serums, chemical peels, cleansers; some products are taken orally
An interaction check asks whether these two react with each other — it does not ask whether Alpha Hydroxy Acids (ahas) is a good idea for someone in your situation. Here is what our Alpha Hydroxy Acids (ahas) record says about it on its own.
Alpha Hydroxy Acids (ahas): dosing
There is no single standard dose for AHAs. The right amount depends on the specific acid, the product strength (concentration), and the formula's pH. Over-the-counter skincare products usually contain lower concentrations, while professional peels use much higher ones.The best approach is to follow the directions on your product label and start slowly, using it less often at first to see how your skin reacts. A pharmacist or dermatologist can help you choose an appropriate strength and routine.For oral AHA products, a reliable proven dose has not been established, so check with a healthcare professional before use.
From our Alpha Hydroxy Acids (ahas) monograph — the full record covers uses, side effects and every documented interaction.
About Lapatinib
What Is Lapatinib Used For?
Brand name: Tykerb
Lapatinib tablets — sold under the brand name Tykerb — are used to treat advanced or metastatic breast cancer in patients whose tumors overexpress the HER2 protein. They are always used in combination with another medicine, not alone.
Tykerb is approved in combination with capecitabine for HER2-positive advanced or metastatic breast cancer in patients who have already received prior treatment including an anthracycline, a taxane, and trastuzumab, and whose disease has progressed on trastuzumab. Tykerb is also approved in combination with letrozole for postmenopausal women with hormone receptor-positive, HER2-positive metastatic breast cancer when hormonal therapy is appropriate.
Most-Reported Side Effects for Lapatinib
From FAERS, the FDA’s public side-effect reporting system (15,427 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.
Other Drugs & Alpha Hydroxy Acids (ahas)
Browse every other medication we’ve checked against Alpha Hydroxy Acids (ahas) — 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 Alpha Hydroxy Acids (ahas) against these medications and found no known interaction in our sources. Open any page to confirm.
- Apixaban ›
- Levothyroxine ›
- Amlodipine ›
- Methylphenidate ›
- Warfarin ›
- Sertraline ›
- Testosterone ›
- Losartan Potassium ›
- Ivermectin ›
- Abemaciclib ›
- Aspirin ›
- Metoprolol ›
- Acetaminophen ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Tadalafil ›
- Docusate ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Valacyclovir ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Amoxicillin ›
- Lisinopril ›
- 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 Alpha Hydroxy Acids (ahas) list.
Alpha Hydroxy Acids (ahas) References
The 2 sources that drive our Alpha Hydroxy Acids (ahas) monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Alpha Hydroxy Acids (ahas) is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
- Alpha Hydroxy Acids — U.S. Food and Drug Administration (FDA) Source
- Chemical Peel — Cleveland Clinic 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.
Taking Alpha Hydroxy Acids (ahas) and Lapatinib Together: Common Questions
Is it safe to take Alpha Hydroxy Acids (ahas) with Lapatinib?
Does Lapatinib 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.