Daily caffeine intake
Count all sources rather than judging one drink or supplement in isolation.
Read guidesEnglish guide library
Long answers for real decisions.
Each guide starts with a direct answer, then explains the method, limitations, examples and primary sources.
Use one guide to answer one concrete question. Follow the internal links only when you need a calculation, source oFIT PROFIT · EDITORIAL
Direct answer
Use one guide to answer one concrete question. Follow the internal links only when you need a calculation, source or next step.
Next step
Choose the route that matches your question
No forced funnel: use only the page you actually need.
NRV explained
Understand what a percentage on an EU label means — and what it does not mean.
Read guidesSupplements and medicines
Prepare a complete list and questions before combining products.
Read guidesCompare supplements
Use purpose, serving, overlap, warnings, evidence and daily cost.
Read guidesEU allergen labels
Find the regulated allergen emphasis and understand precautionary statements.
Read guidesEU nutrition claims
Check the legal numeric condition behind words such as “low sugar” or “high protein”.
Read guidesEditorial method
The library prioritises primary legislation, official public-health information and current manufacturer documents. Personal experience can add context but is not used as proof that the same result will occur for everyone.
Where an answer depends on a current package, the guide tells the reader to verify the latest label rather than treating an old screenshot as permanent.
Reading priority
Choose the guide that matches the decision you need to make
Each guide starts with a concrete question and then shows the method, example, source and limits. You do not need to read the whole library: choose the page that can change your next decision.
Popular search questions
Choose a question to open the most relevant guide, calculator or official route.
Daily caffeineQueries: how much caffeine per day · caffeine and sleepOpen answer →Understand NRVQueries: what does nrv mean · calculate nutrient reference valueOpen answer →Label and ingredientsQueries: how to read a supplement label · check ingredientsOpen answer →EU allergensQueries: 14 eu allergens · check allergens in ingredientsOpen answer →Salt and sodiumQueries: convert sodium to salt · salt sodium calculatorOpen answer →FitLine safetyQueries: fitline side effects · fitline contraindicationsOpen answer →