Side effects and safety
Memopezil Side Effects: What to Watch For and When to Ask
Memopezil's ingredients can cause stomach upset, nausea, dry mouth, headache, dizziness and insomnia.
Ginseng may affect clotting and blood sugar, and bacopa and rhodiola can interact with some drugs. The label asks anyone with a medical condition, pregnant or nursing, or under 18 to see a physician first.
To see if it fits you, read who Memopezil is for.
Written by the Memopezil label deskUpdated
§ 01The short list
What are the side effects of Memopezil?
No study has tested Memopezil's side effects, so the list comes from its five ingredients.
The most common problems named in our sources are stomach upset, nausea and dry mouth from bacopa, dizziness and headache from rhodiola, and insomnia from ginseng and rhodiola. The medicine cautions are more serious than the everyday side effects, and they are the reason the label tells people with a known condition to see a physician. (MSD Manual, Bacopa) (NCCIH, Rhodiola) (NCCIH, Asian Ginseng)
We found no adverse event report under the Memopezil name in the FDA's public food and supplement database when we searched on October 19, 2026. That only shows what was reported under that name. It does not show the product is free of problems. (openFDA CAERS search, Memopezil)
Many people tolerate supplements like these well. The point of the list is to know what to watch for and who should ask first.
Two groups deserve extra care. The label asks pregnant or nursing mothers and anyone under 18 to consult a physician before use, and our sources say little about rhodiola or ginseng in pregnancy. Older adults often take several medicines at once, which raises the chance of an interaction, so a pharmacist review of the full list is worth the time before the first capsule.
§ 02By ingredient
Side effects and cautions, one ingredient at a time
| Ingredient | Side effects | Medicine and health cautions |
|---|---|---|
| Bacopa, 200 mg | Stomach upset, nausea, dry mouth; more digestive complaints and headaches than placebo in one 12-week trial (MSD Manual, Bacopa) (Lopresti 2025, Bacopa 12-week trial) | Can raise acetylcholine; may raise thyroid hormone; may change levels of drugs handled by P450 enzymes, such as warfarin (MSD Manual, Bacopa) |
| Rhodiola, 100 mg | Dizziness, headache, insomnia, dry mouth or extra saliva (NCCIH, Rhodiola) | Losartan interaction reported; little known in pregnancy or breastfeeding (NCCIH, Rhodiola) |
| Panax ginseng, 90 mg | Insomnia is the most common (NCCIH, Asian Ginseng) | May interfere with clotting, may worsen autoimmune disorders, might lower blood sugar; possibly unsafe in pregnancy (NCCIH, Asian Ginseng) |
| L-theanine, 100 mg | Well tolerated in the trials we read (Hidese 2019, L-theanine 200 mg) | No serious interaction found in our sources; ask about sedatives and blood pressure medicine |
| BCAA complex, 540 mg | None well documented in our sources | Competes with tryptophan and tyrosine for brain entry (Fernstrom 2013, large neutral amino acids) |
§ 03Medicines
Which medicines need a check first?
Blood thinners, diabetes medicines, losartan, thyroid medicine and drugs that act on acetylcholine are the main ones.
- Warfarin and other blood thinners. Ginseng may interfere with clotting, and bacopa may alter the level of drugs handled by P450 enzymes. (NCCIH, Asian Ginseng) (MSD Manual, Bacopa)
- Diabetes medicines. Ginseng might lower blood sugar, so ask before combining. (NCCIH, Asian Ginseng)
- Losartan. A rhodiola interaction has been reported. (NCCIH, Rhodiola)
- Thyroid medicine. Bacopa may raise thyroid hormone levels. (MSD Manual, Bacopa)
- Memory, glaucoma, bladder, allergy and sleep medicines. Bacopa may blunt anticholinergic drugs and add to cholinergic ones, including those for glaucoma and Alzheimer's disease. (MSD Manual, Bacopa)
The label says "consult a physician if you have a known medical condition," which covers most of these. A pharmacist can check your whole list in a few minutes. Our supplements and medicines guide goes through the reasoning.
§ 04Sleep and calm
Does Memopezil cause insomnia?
It can. The sales page says "no stimulants, no caffeine," and the label lists no caffeine. NCCIH still names insomnia as the most common side effect of Asian ginseng and lists it as possible with rhodiola. (NCCIH, Asian Ginseng) (NCCIH, Rhodiola)
If your sleep gets worse after you start, move the capsules to the early part of the day and watch for two weeks. If it does not improve, tell your clinician. L-theanine, the calming line, is not a guarantee against sleeplessness.
Memopezil: from $49 a bottle60 capsules · 2, 3 or 6 bottles · free US shipping on 3 or 6 · 60-day money-back guarantee
See packs§ 05If something happens
What to do if you have a reaction
Stop taking it
If a reaction is serious, stop and call your clinician. For sudden confusion, a severe headache or fainting, call 911.
Keep the bottle
Keep the packaging, lot information and your order ID. They help any report.
Report it
The FDA takes reports through its Safety Reporting Portal. Even partial information can help. (FDA, How to Report a Problem)
Tell the order desk
Call +1 (507) 448-8190 or email [email protected] with your order ID, especially if you want to use the guarantee.
§ 06A fair read
How to weigh the risk
For a healthy adult who takes no medicines, the likely downside is mild: a queasy stomach, a headache or a restless night. For someone on a blood thinner, diabetes drug, losartan or thyroid medicine, the downside is a real interaction, and a doctor's ten minutes is cheap protection.
Natural does not always mean safe, and supplements can interact with medicines. That is advice from NIH's Office of Dietary Supplements and NCCIH alike. Keep taking prescribed medicine exactly as directed. (NIH ODS, Dietary Supplements: What You Need to Know) (NCCIH, Using Dietary Supplements Wisely)
A practical approach is to start with the label serving, note the date, and write down any change in sleep, stomach comfort or headaches during the first two weeks. That short log makes a conversation with a clinician far more useful, and it makes the guarantee decision at day 30 easier to judge fairly.
FAQ
Memopezil side effects: your questions
Is Memopezil safe?
It depends on your health and medicines. The label's caution asks anyone with a known condition, pregnant or nursing mothers and those under 18 to consult a physician. For a healthy adult the likely effects are mild, but interactions with blood thinners, diabetes drugs and losartan are real. (NCCIH, Asian Ginseng) (NCCIH, Rhodiola)
Does Memopezil cause diarrhea?
Our sources list stomach upset, nausea and dry mouth for bacopa, and a 2025 trial found more digestive complaints with it. Diarrhea is not named in those sources, but it is a kind of stomach upset. If it continues, stop and call your clinician. (MSD Manual, Bacopa) (Lopresti 2025, Bacopa 12-week trial)
Can Memopezil cause headaches or dizziness?
Yes, possibly. NCCIH lists dizziness and headache among rhodiola's side effects, and the bacopa group in one trial reported more headaches than placebo. Take the capsules with a full glass of water, and stop and call your clinician if they persist. (NCCIH, Rhodiola) (Lopresti 2025, Bacopa 12-week trial)
Has anyone reported a problem with Memopezil to the FDA?
On October 19, 2026 we searched the FDA's public CAERS data with three query forms and found no report naming the brand. That only reflects what was reported under that name, and it does not show the product is free of problems. (openFDA CAERS search, Memopezil)
Can I take Memopezil long term?
No study we found tested it beyond 12 weeks. NCCIH calls rhodiola possibly safe for up to 12 weeks. The label sets no limit. Review at 30 days and again at 90 with your clinician, especially if your medicines change. (NCCIH, Rhodiola)
Are there allergens in Memopezil?
The label says "Contains No Allergens." The other ingredients are microcrystalline cellulose, the capsule shell and magnesium stearate. If you have a known plant allergy, ask a clinician about bacopa, rhodiola and ginseng, which are botanical extracts.
Where can I report a side effect?
Use the FDA's Safety Reporting Portal at safetyreporting.hhs.gov, and tell your clinician. You can also tell the Memopezil order desk. Stop the product first if the reaction is serious, and keep the bottle. (FDA, How to Report a Problem)
Who wrote this
Written and reviewed by
Pages built from the label, the sales page and linked NIH, FDA, FTC and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is run by Memopezilmind, a Memopezil U.S. stocking partner, not by the manufacturer or the distributor. We earn money when you buy through our order links.
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