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    Brad Stanfield

    Brad Stanfield

    MD, General Practitioner

    General Practitioner based in Auckland, New Zealand, specializing in preventative medicine and longevity. Runs a popular YouTube channel focused on evidence-based supplement and health advice. About

    22supplements discussed
    Protocol:4 morning4 evening14 flexible

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    Current Stack

    22 supplements

    Vitamin D3

    Price Comparison
    From $0.03/ct
    N
    NatureWiseBest Value
    4.7
    360 ct

    $0.03/ct

    $10.83 total

    Buy
    N
    Nature's Bounty
    4.8
    150 ct

    $0.04/ct

    $6.54 total

    Buy
    N
    Nature Made
    4.8
    300 ct

    $0.04/ct

    $10.62 total

    Buy
    Price Comparison
    From $0.07/ct
    N
    NutricostBest Value
    4.6
    500 ct

    $0.07/ct

    $32.95 total

    Buy
    L
    Life Extension
    4.5
    120 ct

    $0.11/ct

    $13.50 total

    Buy
    N
    NOW Foods Creatine Monohydrate 1kg
    4.4
    200 ct

    $0.18/ct

    $36.38 total

    Buy

    Magnesium

    Evening, 30-60 min before bed
    Price Comparison
    From $0.06/ct
    N
    NutricostBest Value
    4.7
    180 ct

    $0.06/ct

    $11.47 total

    Buy
    N
    NatureBell
    4.7
    240 ct

    $0.07/ct

    $16.96 total

    Buy
    D
    Double Wood Supplements
    4.6
    180 ct

    $0.08/ct

    $14.41 total

    Buy

    Omega-3 Fatty Acids (EPA)

    Price Comparison
    From $0.07/ct
    N
    NOW FoodsBest Value
    4.7
    180 ct

    $0.07/ct

    $13.22 total

    Buy
    N
    NatureWise
    4.6
    60 ct

    $0.12/ct

    $7.22 total

    Buy
    N
    Nutricost
    4.7
    240 ct

    $0.12/ct

    $27.95 total

    Buy
    Price Comparison
    From $0.10/ct
    M
    Micro IngredientsBest Value
    4.6
    240 ct

    $0.10/ct

    $24.95 total

    Buy
    V
    Vital Vitamins
    4.6
    150 ct

    $0.16/ct

    $23.95 total

    Buy
    V
    VERDEVITALIS
    4.2
    100 ct

    $0.23/ct

    $22.99 total

    Buy

    Fiber

    25-38g
    With meals
    Price Comparison
    From $0.07/ct
    N
    NOW FoodsBest Value
    4.5
    240 ct

    $0.07/ct

    $17.36 total

    Buy

    Caffeine

    Price Comparison
    From $0.03/ct
    B
    BulkSupplementsBest Value
    4.6
    500 ct

    $0.03/ct

    $16.97 total

    Buy
    N
    Nutricost
    4.5
    500 ct

    $0.04/ct

    $17.95 total

    Buy
    P
    ProLab
    4.5
    200 ct

    $0.06/ct

    $12.99 total

    Buy
    With meals
    Price Comparison
    From $0.06/ct
    B
    BulkSupplementsBest Value
    4.5
    240 ct

    $0.06/ct

    $13.95 total

    Buy
    Horbäach logo
    Horbäach
    4.6
    150 ct

    $0.09/ct

    $14.23 total

    Buy
    V
    Vitamatic Hyaluronic Acid 200mg
    4.6
    120 ct

    $0.14/ct

    $16.67 total

    Buy

    Melatonin

    Price Comparison
    From $0.04/ct
    N
    NutricostBest Value
    4.7
    240 ct

    $0.04/ct

    $10.00 total

    Buy
    N
    NOW Foods
    4.7
    180 ct

    $0.05/ct

    $8.70 total

    Buy
    Carlyle logo
    Carlyle
    4.5
    120 ct

    $0.07/ct

    $8.98 total

    Buy

    Vitamin A

    With meals

    No pricing data available. View expert evidence

    With meals
    Price Comparison
    From $0.06/ct
    D
    Double WoodBest Value
    4.5
    180 ct

    $0.06/ct

    $11.35 total

    Buy
    N
    Nutricost
    4.5
    120 ct

    $0.08/ct

    $9.95 total

    Buy
    Swanson logo
    Swanson
    4.4
    90 ct

    $0.12/ct

    $10.99 total

    Buy

    Vitamin K2

    Price Comparison
    From $0.04/ct
    Carlyle logo
    CarlyleBest Value
    4.7
    240 ct

    $0.04/ct

    $9.49 total

    Buy
    N
    Nutricost
    4.7
    240 ct

    $0.06/ct

    $14.95 total

    Buy
    N
    NOW Foods
    4.7
    120 ct

    $0.12/ct

    $13.86 total

    Buy

    Vitamin B3

    With meals, split into two doses
    Price Comparison
    From $0.24/ct
    N
    NOW FoodsBest Value
    4.6
    100 ct

    $0.24/ct

    $23.88 total

    Buy

    Vitamin C

    Price Comparison
    From $0.06/ct
    N
    NutricostBest Value
    4.7
    240 ct

    $0.06/ct

    $13.95 total

    Buy
    N
    Nature Made
    4.8
    100 ct

    $0.08/ct

    $8.07 total

    Buy
    N
    NOW Foods
    4.8
    250 ct

    $0.08/ct

    $19.59 total

    Buy

    Electrolytes

    No pricing data available. View expert evidence

    Price Comparison
    From $0.06/ct
    B
    BulkSupplementsBest Value
    4.6
    360 ct

    $0.06/ct

    $20.97 total

    Buy
    D
    Double Wood
    4.7
    300 ct

    $0.07/ct

    $19.95 total

    Buy
    P
    P Puregen Labs
    4.6
    100 ct

    $0.10/ct

    $9.99 total

    Buy

    Taurine

    500mg-2g
    Morning
    Price Comparison
    From $0.05/ct
    N
    NutricostBest Value
    4.6
    400 ct

    $0.05/ct

    $19.95 total

    Buy
    G
    Gyumolics
    4.8
    120 ct

    $0.13/ct

    $15.29 total

    Buy
    C
    Clarusph
    5
    120 ct

    $0.17/ct

    $19.95 total

    Buy
    Price Comparison
    From $0.02/ct
    N
    NOW FoodsBest Value
    4.6
    500 ct

    $0.02/ct

    $11.00 total

    Buy
    MEMBER´S MARK logo
    MEMBER´S MARK
    4.7
    400 ct

    $0.04/ct

    $17.23 total

    Buy
    N
    Nutricost
    4.5
    500 ct

    $0.04/ct

    $19.99 total

    Buy

    Multivitamin

    Price Comparison
    From $0.12/ct
    N
    NutricostBest Value
    4.6
    120 ct

    $0.12/ct

    $14.95 total

    Buy
    L
    Life Extension
    4.5
    120 ct

    $0.16/ct

    $19.13 total

    Buy
    N
    NOW Foods
    4.5
    90 ct

    $0.19/ct

    $17.40 total

    Buy

    Zinc

    Price Comparison
    From $0.05/ct
    N
    NOW FoodsBest Value
    4.7
    250 ct

    $0.05/ct

    $12.60 total

    Buy
    L
    Life Extension
    4.7
    90 ct

    $0.06/ct

    $5.74 total

    Buy
    N
    Nutricost
    4.7
    240 ct

    $0.07/ct

    $17.95 total

    Buy
    Price Comparison
    From $0.04/ct
    M
    Micro IngredientsBest Value
    4.6
    720 ct

    $0.04/ct

    $25.99 total

    Buy
    N
    NOW Foods
    4.6
    120 ct

    $0.11/ct

    $12.70 total

    Buy
    N
    Nutrex
    4.6
    180 ct

    $0.16/ct

    $27.99 total

    Buy

    Glycine + NAC

    With meals

    No pricing data available. View expert evidence

    Supplement Timeline

    230 episodes across 7 years

    2026
    2025
    2024
    2023
    2022
    2021
    2020

    All Sources

    1290 references from 237 podcast episodes

    5 Supplements with STRONG Evidence of Benefit

    20 references · Invalid Date

    Watch
    Best practiceVitamin D39:39

    “They suggest that for most of us, 800 international units is absolutely fine. That's all that we need.”

    “With recent hype about vitamin D supplements, we need to be aware that it is possible to get too much. Those with higher doses didn't improve outcomes; in fact, they made things worse.”

    The Only Supplements That ACTUALLY Work

    20 references · Invalid Date

    Watch

    “Multiple randomized clinical trials showing that hyaluronic acid improves skin wrinkles.”

    “The group who took the supplement compared to the placebo had a statistically significant benefit on global cognition and the supplement was a multivitamin and mineral supplement.”

    The One Supplement EVERYONE Should Take

    19 references · Invalid Date

    Watch

    “Magnesium affects the concentrations of the active form of vitamin D, which are major regulators of bone status.”

    “Increasing magnesium intakes from food or supplements may increase bone mineral density in postmenopausal and elderly women.”

    The Only Three Supplements I Take

    18 references · Invalid Date

    Watch

    “Bone density in the wrist decreased by 2.4% in the 4,000 international unit group and 3.5% in the 10,000 international unit group.”

    “Overall, I wanted to supplement with 1,000 international units.”

    This Study Proved We Were WRONG About Vitamin D

    17 references · Invalid Date

    Watch
    Best practiceVitamin D32:39

    “Adults up to 50 years of age should generally get at least 600 international units of vitamin D a day.”

    “It's also a key regulator of processes related to immune function, muscles, cell growth, and how we process glucose.”

    View full sources page

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