People mainly take Butter Coffee for focus, energy. Based on 3 first-hand reports and 2 meta-analyses & systematic reviews in the medical literature. Ranked #1033 of 1,974 overall.
Of reports that state an outcome, 50% are positive.
Of the people who reported each effect, the share who said it got better.
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: The substantial heterogeneity among studies hinders conclusions about other dietary strategies. This review was registered with PROSPERO as CRD42024541785.
PubMed 40355028 ↗Conclusion: Reducing or eliminating alcohol consumption, refraining from direct or indirect exposure to tobacco products, and reducing betel quid chewing may lead to a reduced risk of oral cancer. Reducing the intake of processed meat, moderate intake of coffee, the consumption of green tea of appropriate temperature and strength, fish and citrus fruit intake, and oral hygiene, preventing periodontal diseases and HPV infections, and reducing mechanical stimulation of the oral mucosa caused by various reasons can exert protective effects against oral cancer.
PubMed 39862963 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“I had it past two days and its been a life changer. Energy levels are high. No lethargy. ... It absolutely helps with sustainable energy and it's great.”
“Butter coffee is believed to provide steady, long-lasting energy without a blood sugar crash. In theory, since fat slows digestion, the caffeine in the coffee is absorbed slower”
“1 cup of butter coffee with 75mg of l-theanine”
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