Free Supplement Stack Checker
Tell us what's in your cupboard. In about 30 seconds we'll flag doubled-up nutrients, common timing clashes and good questions to take to your GP or pharmacist.
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Free PDF for subscribers (coming soon): 10 supplement mistakes Australians make, a plain-English checklist for reading labels, adding up totals and asking your GP or pharmacist better questions, with every fact linked to the TGA, the NHMRC or a published study.
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Answers
Short, sourced answers to common Australian supplement questions.
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. We count anonymous page and button events (e.g. a check was run) using Cloudflare. No stack contents, IPs or cookies.
If nothing is flagged, is my stack safe?
No. The checker covers 84 supplements and nutrients with cited rules, but many interactions are not included. No flag means "not in our database", not "safe".
Where do the rules come from?
Each rule cites a public source such as the NHMRC Nutrient Reference Values, NIH Office of Dietary Supplements, NIH NCCIH or the Australian Poisons Standard. See the full source list at biohackbrief.com/sources. Upper limits are adult Australian/NZ Nutrient Reference Values (NHMRC).