HealthRX.com · Printable medication review sheet
Quercetin with NMN or NR: medicine, meal and liver check sheet
Write down your quercetin product, schedule and the meal you take it with, tick the medicines this page flags, and keep liver test results and stomach symptoms in one place for your pharmacist or clinician. Safety facts come from a published quercetin safety review.
What the safety review and the absorption study found
- Quercetin supplements are often sold in daily amounts of up to 1,000 mg, more than a usual diet provides.[1]
- Adverse effects in human studies were rarely reported, and those reported were mild.[1]
- Adequate safety data for long-term use (more than 12 weeks) of 1,000 mg a day or more are not available.[1]
- Animal and human studies found that quercetin can change how much of some drugs reaches the blood.[1]
- Animal studies raise questions about kidneys that are already damaged and about estrogen-dependent cancer.[1]
- With a high-fat breakfast (15.4 g of fat), peak quercetin levels were 45% higher and 24-hour exposure 32% higher than with a fat-free one.[2]
Your quercetin and NAD+ products
Quercetin product and amount per serving
Scheduledaily, or short courses (how many days, how often)
Meal you take it withand roughly how much fat it contains
NMN or NR product and amount
Other stacked supplementsfor example resveratrol, fisetin or TMG
Tick any medicine you take, and show this to your pharmacist
- Warfarin or another blood thinner
- A fluoroquinolone antibiotic
- Cyclosporine or another immunosuppressant
- A statin
- A calcium channel blocker
- Treatment for kidney disease
- Treatment for, or a history of, a hormone-sensitive cancer
Liver tests and stomach symptoms
| Date | ALT | AST | Nausea, bloating or diarrhea | Notes |
|---|---|---|---|---|
Questions for your pharmacist or clinician
- Do any of my prescriptions interact with quercetin?
- Should I have liver tests before I start and again later?
- For my reason for taking quercetin, is a daily or a short-course schedule better supported?
- Does my kidney health or cancer history change whether I should take it?
Sources for the facts on this sheet
- Andres S, Pevny S, Ziegenhagen R, et al. Safety Aspects of the Use of Quercetin as a Dietary Supplement. Mol Nutr Food Res 2018. PMID 29127724. https://pubmed.ncbi.nlm.nih.gov/29127724/
- Guo Y, Mah E, Davis CG, et al. Dietary fat increases quercetin bioavailability in overweight adults. Mol Nutr Food Res 2013. PMID 23319447. https://pubmed.ncbi.nlm.nih.gov/23319447/
This sheet records information for a conversation with your prescriber or pharmacist. It does not replace their instructions or the medication's prescribing information.