THE VOLTAIRE JOURNAL

Caffeine, with context.

Guides, research and notes from the family behind Voltaire.

Explore our ten-study research reading room

October 01, 2026

What your daily coffee or energy drink really costs

Keep the ritual you enjoy. See what everyday drink spending adds up to, how replacement costs change the savings, and what compounding examples really mean.

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October 01, 2026

Energy drinks: separate the sugar from the caffeine

A practical guide to reading sugar and caffeine separately, comparing labels and putting the energy-drink research in perspective.

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October 01, 2026

Sugary drinks and health: 10 studies, explained

Ten research papers on sugary drinks, weight, metabolic health and teeth, with clear explanations of what they do and do not prove.

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October 01, 2026

Welcome to the Voltaire Journal

Welcome to the Voltaire Journal: a place for clear caffeine guides, research explainers and brand updates.Start with the essentialsOur caffeine benefits guide covers alertness, movement, sleep and the questions people ask about 50 mg caffeine capsules.Look closer at...

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