Why These Twenty Checks
Each box answers a question that beginners most often skip. The first group comes before any shopping because it can rule products out completely: a medication interaction, a drug test at work or a state rule changes the list before price or flavor ever matter. The second and third groups are about verification. A label is a claim, and the lab report is the evidence; the checklist asks you to confirm that the two describe the same batch and agree with each other. The last group is about what happens once the product is in your home.
The checklist deliberately leaves out how much to take. That is a question for the product label and your doctor, not for a website. It also leaves out brands and prices, because this site sells nothing and recommends no products.
Privacy
Your ticks are stored only in this browser's local storage so the list is still there when you come back. They are never sent to this site or anyone else. Clearing your ticks or your browser data removes them.
Stuck on One of the Boxes?
Each item links to the guide that explains it. If a label or a lab report still does not make sense, you can send a general question. Replies are general information, never medical advice, so please leave health details out of your message.