Black Coffee
People mainly take Black Coffee for focus, appetite, energy. Based on 8 first-hand reports and 0 meta-analyses & systematic reviews in the medical literature. Ranked #202 of 1,974 overall.
Of reports that state an outcome, 100% are positive.
What Black Coffee 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.
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.
“Black Coffee and Chocolate is the way to go.”
“Coffee is fine as long as it is black coffee! It will actually provide benefits to metabolism.”
“Black coffee works perfectly well for me. It works even better to suppress appetite with an added 500mg of L-Theanine.”
“Black coffee. Stay away from energy drinks.”
“Black coffee is definitely the go to for cost effectiveness.”
Top discussions (5)
- What's your favorite supplement for brain repair and fast learning? ↗
- A powerful but unknown hack to reduce appetite for HOURS: niacin ↗
- Role of Nicotine and other Nootropics in Productivity ↗
- Any supplements that help suppress hunger even a little? ↗
- Anyone know any of any very effective appetite suppressants? I’ve been prescribed adderall recently, and I’m already getting off of it asap but it is a very very powerful appetite suppressant and I’m realizing how much I need one ↗
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