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Evidence reviews, routines and the occasional grade change, in plain language.

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Oranges and a lime in a small wooden crate in warm evening light

Ingredient guide · October 2026

Immune support: what vitamins C and D, zinc and B6 do

What vitamins C and D, zinc and B6 do for normal immune function, how much is in a serving compared with daily…

Hands whisking ceremonial matcha in a bowl

Ingredient guide · October 2026

Matcha: caffeine, L-theanine and what “ceremonial” means

How shade-grown matcha differs from green tea, how much caffeine is in a teaspoon, what “ceremonial” means, and how to make and…

The word collagen in wooden tiles with powder and capsules on pink

Ingredient guide · October 2026

Collagen peptides: what 20 grams does

Whether you can absorb collagen, what the trials show for skin and joints, how it counts as protein, and how to take…

A glass of milk beside a linen cloth on a white wooden table

Ingredient guide · October 2026

Colostrum: what IgG is, and what studies in adults show

What makes colostrum different from milk, what studies in adults show for the gut, recovery and immune health, and how to take…

Lion's mane mushrooms growing on moss in a forest

Ingredient guide · October 2026

Lion's mane: what the human studies show

What lion’s mane is, what human trials have found for memory and focus, and how long to give it.

Close-up of an eye beside an omega-3 softgel held between two fingers

Ingredient guide · October 2026

Omega-3: how much EPA and DHA counts, and how to read the label

Why most adults fall short on EPA and DHA, how much counts, how to read a fish oil label, and how long…

Hands forming a heart shape over the stomach

Ingredient guide · October 2026

Probiotics: what strains and CFU mean

How to read a probiotic label, why strain names matter, what a CFU count tells you, and what the research on our…

A bowl of red and green grapes on linen by a sunny window

Ingredient guide · October 2026

Resveratrol: what human studies show, and why we grade it Frontier

Where resveratrol’s fame came from, what human trials have found, how our 600 mg serving compares with the studied range, and how to…

A fried egg, avocado and hazelnuts with a cup of coffee by a sunny window

Comparison · October 2026

CoQ10: ubiquinone or ubiquinol, and who it's for

What CoQ10 does in your cells, how the two forms compare, what studies in healthy adults show, and how to take it…

Dried ashwagandha roots beside a pile of root powder

Ingredient guide · October 2026

Ashwagandha: what the KSM-66 studies show, and who it’s for

What KSM-66 ashwagandha did in placebo-controlled studies of adults under everyday stress, how long it takes, and who it’s for.

A woman smiling with her eyes closed in warm sunlight by the sea

Ingredient guide · October 2026

Vitamin D3 and K2: why they’re paired, and how much to take

What vitamins D3 and K2 each do for bone, why they work as a pair, what 5,000 IU means next to the upper…

Two white capsules resting in an open palm

Comparison · October 2026

NMN or NAD+: which one, and why

Both feed the coenzyme your cells run on. What each one is, what human trials show, and how to choose the right…

Woman sleeping peacefully on grey bedding

Comparison · October 2026

Magnesium forms, compared

Glycinate, citrate, oxide and more: how much each form absorbs, how your stomach handles it, and what the sleep research shows.

Scoop of white powder over a glass of water

Ingredient guide · October 2026

Creatine is not just for the gym

What creatine does for older adults, women and the brain, what the research shows, graded by the evidence, and how to take…

Letters from Cellovi

Your routine guide, one email a week at most: what to take for each moment, what the evidence says, and first word on new protocols.

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