Nadh + Granisetron
Granisetron brand names: Kytril, Sustol.
We found no known interaction between Nadh and Granisetron 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. Additionally, although there is no interaction, the label for Granisetron states a food rule worth keeping to.
Nadh and Granisetron
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 Granisetron and Nadh 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 Nadh at all — not against Granisetron, 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.
Nadh safety at a glance
Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Some Granisetron Products Have a Food Rule — Nadh Should Not Break It
At least one FDA label for a product containing Granisetron says to take it on an empty stomach. Most supplements — Nadh included — are taken with a meal, so the easy mistake is swallowing both together at breakfast. Where that rule applies, keep Granisetron on its own and move Nadh to a meal later in the day.
This may not be true of your version. Food instructions belong to the product, not the ingredient: two Granisetron products can carry different directions, and extended-release forms often differ from immediate-release ones. The label we read is quoted below — check the directions on your own box or bottle, or ask your pharmacist, for how to take the exact product you were given.
Recommended Dosage ( 2.2 ): The recommended dosage in adults is 10 mg administered as a single subcutaneous injection at least 30 minutes before the start of emetogenic chemotherapy on Day 1.
From the Dosage and Administration section of the FDA label we read for Granisetron — where that label names a specific product, the instruction is that product's. Read the label on DailyMed ›
A food rule is not an interaction — it is about how much of the medicine you absorb. The directions that came with your own product, and your pharmacist, outrank anything on this page.
See Every Supplement That Interacts With Granisetron
This page covers Nadh only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Granisetron page lists 38 supplements it has a documented interaction with, worst first, each one explained.
The most serious there right now: Activated Charcoal (major), Lithium (major), 5-htp (moderate), Acetyl-l-carnitine (moderate) and Ayahuasca (moderate).
By severity: 2 major · 25 moderate · 11 minor.
From our pharmacist’s overview on the Granisetron page
“Granisetron (Kytril, Sustol) blocks serotonin signals to stop nausea from chemotherapy and surgery, and this is a list that warrants real caution before you add a supplement to it. Most of the entries raise serotonin themselves, and stacking them on a serotonin-acting drug can push toward serotonin syndrome, a dangerous overload of tha…”
Reviewed by 2 · Jul 18, 2026
Taking Nadh as Part of a Dietary Supplement Product? Check It for Interactions
We hold 3 real supplement products containing Nadh, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Nadh. Even though Nadh itself has no known interaction with Granisetron, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:
Where Nadh and Granisetron 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.
#973 of 1,452 supplements looked up here in the last 7 days
#2,457 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. Nadh 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 Nadh reference on this page ↓
- Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Nadh and Granisetron 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 Nadh
What is Nadh?
- Chronic fatigue syndrome
- Low energy and tiredness
- Athletic performance
- Mental clarity and focus
- Parkinson's disease (investigational)
- Jet lag
NADH is the active, electron-carrying form of niacin (vitamin B3) that your body uses to make energy in cells. Some people take it as a supplement for fatigue, mental sharpness, and athletic performance, but solid human evidence is limited and mostly preliminary. It appears generally well tolerated in the short term, but talk with your pharmacist or doctor before trying it.
Not applicable (a coenzyme form of vitamin B3/niacin) · Tablets, capsules, sublingual lozenges, sometimes intravenous (clinical settings)
An interaction check asks whether these two react with each other — it does not ask whether Nadh is a good idea for someone in your situation. Here is what our Nadh record says about it on its own.
Nadh: dosing
There is no official, standardized dose of NADH. Doses used in studies have varied, and product strengths differ from brand to brand. Sublingual (under-the-tongue) forms are marketed as being better absorbed, though strong proof for this is limited.The safest approach is to follow the directions on the product label and not exceed the recommended amount. Taking it earlier in the day may help avoid sleep problems.
From our Nadh monograph — the full record covers uses, side effects and every documented interaction.
About Granisetron
What Is Granisetron Used For?
Brand names: Kytril, Sustol
Granisetron is used to prevent nausea and vomiting linked to emetogenic (nausea-causing) cancer chemotherapy — including high-dose cisplatin — and radiation therapy, including total body irradiation and fractionated abdominal radiation. Granisetron hydrochloride tablets and Granisol oral solution are approved for both the chemotherapy and radiation indications. Sancuso skin patch is approved for prevention of nausea and vomiting in adults receiving moderately and/or highly emetogenic chemotherapy regimens of up to 5 consecutive days.
Granisetron hydrochloride injection (intravenous) is also used to prevent and treat postoperative nausea and vomiting in adults. Sustol (subcutaneous injection) is used in combination with other anti-nausea medicines in adults specifically for the prevention of acute and delayed nausea and vomiting associated with moderately emetogenic chemotherapy or anthracycline and cyclophosphamide combination chemotherapy regimens.
Other Drugs & Nadh
Browse every other medication we’ve checked against Nadh — 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 Nadh 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 ›
- Acetaminophen ›
- Metoprolol ›
- Rosuvastatin ›
- Rivaroxaban ›
- Escitalopram ›
- Clopidogrel ›
- Atorvastatin ›
- Docusate ›
- Tadalafil ›
- Tirzepatide ›
- Ibuprofen ›
- Methamphetamine ›
- Hydroxyurea ›
- Warfarin Sodium ›
- Valacyclovir ›
- Sumatriptan ›
- Semaglutide ›
- Prednisone ›
- Lisdexamfetamine ›
- Propranolol ›
- Metformin ›
- Amitriptyline ›
- Amoxicillin ›
- Lisinopril ›
- Isotretinoin ›
- Amlodipine Besylate ›
- Methotrexate ›
- Bendamustine ›
- Bupropion ›
- Amphetamine ›
- Doxycycline ›
- Fluoxetine ›
- Acyclovir ›
- Azithromycin ›
- Lamotrigine ›
- Pregabalin ›
- Dextroamphetamine ›
- Gabapentin ›
- Acetaminophen, Codeine ›
- Levothyroxine, Liothyronine ›
- Clonazepam ›
- Quetiapine ›
- 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 Nadh list.
Nadh References
The 1 sources that drive our Nadh monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing. Nadh is not covered by the licensed Natural Medicines interaction database, so its page cites these public sources directly.
- Niacin - Health Professional Fact Sheet — NIH Office of Dietary Supplements 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 Nadh and Granisetron Together: Common Questions
Is it safe to take Nadh with Granisetron?
Should I take Nadh and Granisetron at the same time of day?
Does Granisetron 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.