Yellow skin or eyes and dark or brown urine after taking a memory supplement are possible liver warning signs and require prompt medical advice. Stop taking the supplement and contact a clinician, but do not assume the product is the proven cause. Jaundice means yellowing caused by bilirubin buildup. Bilirubin is a yellow substance the body produces when it breaks down red blood cells.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Table of Contents
- What the color changes may mean
- What to do now
- What a clinician may check
- Evidence differs by ingredient
- Why the label may not settle the cause
What the color changes may mean
Jaundice and dark urine can occur when bilirubin builds up in the blood or enters the urine. According to MedlinePlus guidance on jaundice, possible causes involve the liver, bile ducts, gallbladder, blood, or other conditions. The timing matters, but it cannot establish causation.
Symptoms beginning after a supplement may raise suspicion without proving that the product—or any particular ingredient—caused liver injury. Dark urine by itself does not identify the cause. Bilirubin in urine can indicate liver disease or a blocked bile duct, so visible color changes deserve clinical evaluation.
What to do now
The FDA advises people who experience an adverse event while taking a dietary supplement to stop using it, seek medical care or advice, and report the event. supplements generally do not receive FDA approval for safety or effectiveness before sale, as explained in the FDA's dietary supplement guidance.
Take these steps: Do not restart the product simply to test whether the symptoms return. A second exposure could complicate both the health risk and the effort to identify the responsible ingredient.
- Stop the suspected memory supplement.
- Contact a clinician and mention both the yellowing and urine-color change.
- Keep the bottle, packaging, lot number, and remaining capsules or powder.
- Write down the dose, start date, last dose, and when each symptom appeared.
- List every supplement and medicine used during the same period.
What a clinician may check
A clinician may use liver blood tests and other evaluation to look for the source of jaundice. A urine test may also detect bilirubin, which can help point toward liver disease or bile-duct blockage. Bring the actual container rather than relying on memory.
Photographs of the skin, eyes, urine, ingredient panel, and product label may help document what changed and what was taken. The evaluation should consider more than the supplement. Liver, gallbladder, bile-duct, and blood-related conditions can produce similar signs, so assuming a supplement reaction could delay recognition of another cause.
Evidence differs by ingredient
For apoaequorin, the ingredient sold in Prevagen, the title's premise remains unverified. NIH LiverTox's apoaequorin review found no association with raised liver enzymes or clinically apparent liver injury and rated it an unlikely cause. Ashwagandha has a different evidence profile. NIH describes acute liver-injury reports involving jaundice among people aged 21 to 62 who took 450 to 1,350 milligrams daily for one week to four months.
However, some products combined several ingredients, and their contents were not independently verified, according to the NIH Office of Dietary Supplements. Gotu kola, also called Centella asiatica, is promoted for memory and cognition. NIH LiverTox reports rare cases of acute liver injury with jaundice and advises prompt withdrawal when clinically evident liver injury develops, followed by avoidance of another exposure. These findings do not show that every product containing these ingredients is harmful. They show why the exact ingredient list, dose, timing, and clinical findings matter.
Why the label may not settle the cause
A label may not perfectly identify the exposure. In a small laboratory audit, the U.S. Government Accountability Office found that two of three selected memory supplements lacked stated ingredients or contained less than the labeled amount.
A multi-ingredient product also showed evidence consistent with substituted ginkgo material. Because the audit examined only three selected products, it cannot show how common mislabeling is across the market. It does show why packaging, lot details, and any remaining product may be useful when a clinician evaluates a suspected reaction. After seeking care, report the event to the FDA with the product name, symptoms, timing, dose, and available lot information.
