Biohack Brief

Free Supplement Stack Checker

List what you take. We'll flag duplicate nutrients, common timing clashes and questions worth asking your GP or pharmacist.

🔒 Runs in your browser only. Nothing you type is sent, stored or tracked. Privacy

Dose: for single nutrients enter the amount (e.g. 25 mg, 1000 IU). For combination products (multivitamin, ZMA, etc.) enter the number of servings; we estimate the nutrient amounts.

Note: upper limits shown are US adult values (NIH ODS / Food and Nutrition Board), pending review against the Australian/NZ Nutrient Reference Values, which can differ.

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FAQ

Is this medical advice?

No. It provides general information only and cannot diagnose or recommend treatment. Talk to your GP or pharmacist before changing supplements or medicines.

Do you store what I enter?

No. The check runs entirely in your browser. Your stack is not sent to any server and there are no analytics on your inputs.

If nothing is flagged, is my stack safe?

No. The checker covers a small set of cited rules. No flag means "not in our database", not "safe".

Where do the rules come from?

Each rule cites a public source such as NIH Office of Dietary Supplements fact sheets, NIH NCCIH or healthdirect Australia. Upper limits are US adult values; Australian NRVs can differ.