Supplement Dosage Calculators
How much should you actually take? Calculate your personalised dose based on Australian NHMRC guidelines, your age, sex, and health goal.
Magnesium Dosage Calculator
Better sleep · Stress & anxiety · Muscle cramps · General health
AU RDI: 420 mg/day (M) / 320 mg/day (F)
Calculate your doseVitamin D Dosage Calculator
Maintenance · Correct deficiency · Bone health · Immune support
AU RDI: 600 IU/day (M) / 600 IU/day (F)
Calculate your doseOmega-3 (Fish Oil) Dosage Calculator
Heart health · Mood & depression · Joint pain & inflammation · Brain health
AU RDI: 160 mg/day combined EPA+DHA+DPA (M) / 90 mg/day combined EPA+DHA+DPA (F)
Calculate your doseZinc Dosage Calculator
Immune support · Shorten a cold · Skin & acne · General health
AU RDI: 14 mg/day (M) / 8 mg/day (F)
Calculate your doseCreatine Dosage Calculator
Gym performance · Fast loading · Brain function · Vegan/vegetarian support
Calculate your doseAshwagandha Dosage Calculator
Stress & anxiety · Better sleep · Testosterone & fertility (men) · Energy & endurance
Calculate your doseVitamin C Dosage Calculator
Immune support · Iron absorption · Skin health · General health
AU RDI: 45 mg/day (M) / 45 mg/day (F)
Calculate your doseIron Dosage Calculator
Correct deficiency · Maintenance (at-risk groups) · Pregnancy support
AU RDI: 8 mg/day (M) / 18 mg/day (F)
Calculate your doseVitamin B12 Dosage Calculator
Vegan/vegetarian maintenance · Correct deficiency · Age-related absorption support · Energy & fatigue
AU RDI: 2.4 mcg/day (M) / 2.4 mcg/day (F)
Calculate your doseNot sure which supplements to take?
Tell us your health goal and our AI will build a personalised supplement stack with evidence ratings, dosages, and Australian price comparison.
These calculators provide general guidance based on Australian NHMRC guidelines and published clinical research. They are not medical advice. Always consult a healthcare professional before starting any supplement regimen.