Conclusion: In conclusion, vitamin E isoforms, isolated or associated, showed antitumor and chemopreventive activity. However, due to studies heterogeneity, there is a need for further analysis to establish dose, form, supplementation time and breast cancer stage.
PubMed 36657931 ↗Pterostilbene
People mainly take Pterostilbene for focus, mood. Based on 17 first-hand reports and 2 meta-analyses & systematic reviews in the medical literature. Ranked #900 of 1,974 overall.
Of reports that state an outcome, 100% are positive.
What Pterostilbene does, according to users
Of the people who reported each effect, the share who said it got better.
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: A subset of genes differentially expressed in sALS fibroblasts was used in a machine learning model to predict disease progression. In conclusion, multiomic analyses highlighted the differential metabolic and transcriptomic profiles in patient-derived fibroblast sALS, which translate into differential responses to the investigational drug EH301.
PubMed 35652455 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“The NAD+ I have used on occasion and the pterostilbene also on occasion. Never noticed side effects with those.”
“I like pterostilbene better.”
“Pterostilbene 50mg daily”
“Psterostilbene”
“they may have just been using a high dose to increase their NAD+ levels as quickly as possible”
Top discussions (5)
Other options for focus
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate