How Much Caffeine Is Too Much in Australia?
Food Standards Australia New Zealand (FSANZ) references 400mg of caffeine per day, from all sources combined, as a general guidance ceiling for healthy adults.
That figure isn't a hard medical limit for every individual — it's a population-level reference point. Actual tolerance varies by body weight, genetics, medication use, and overall health, which is why this guide includes a note on when to check with a doctor rather than rely on a general number.
What Does 400mg Actually Look Like?
400mg of caffeine is roughly equivalent to four average cups of brewed coffee, or around eight cups of tea, though actual caffeine content varies by brand, brew strength, and serving size.
The key phrase in the FSANZ reference is "from all sources combined." That means coffee, tea, energy drinks, caffeine gum, chocolate, and some medications all count toward the same daily total — it isn't 400mg of coffee plus a separate allowance for anything else.
How Do You Count Servings Across Different Sources?
Tracking your daily caffeine means adding up every source you consume, not just your main one, since small amounts from tea, chocolate, or soft drinks all contribute to the same total.
| Source | Approximate Caffeine |
|---|---|
| Peak Energy Gum (2-piece serving) | 80mg |
| Cup of brewed coffee | ~80–100mg |
| Cup of tea | ~30–50mg |
| Can of cola | ~30–40mg |
| Energy drink (standard can) | ~80–160mg |
A simple approach: if you've had two coffees (roughly 160–200mg) earlier in the day, you have roughly 200–240mg of headroom left under the 400mg reference before topping up with anything else, gum included. Peak Energy Gum is designed for this kind of controlled top-up — 80mg per serving, with a maximum of 3 servings (240mg) per day.
Are Some People More Sensitive to Caffeine?
Yes — caffeine sensitivity varies significantly based on genetics, body weight, medication interactions, existing health conditions, and pregnancy, meaning the 400mg reference doesn't apply equally to everyone.
People who are pregnant, breastfeeding, managing a heart condition, taking certain medications, or generally sensitive to caffeine should not treat 400mg as a personal target. This is a situation where general guidance isn't a substitute for individual medical advice — always consult your doctor about a safe caffeine intake for your specific circumstances before making changes.
What About Children and Caffeine?
FSANZ guidance around caffeine is aimed at adults, and children and adolescents are generally advised to avoid or significantly limit caffeine intake altogether.
Products like Peak Energy Gum are formulated and marketed for adults. If you have questions about caffeine and children specifically, that's a conversation for a doctor or pediatrician rather than general adult guidance.
A Practical Way to Stay Within the Limit
The simplest way to stay under the FSANZ 400mg reference is to mentally total your caffeine sources across the whole day, not just track your "main" one like coffee.
Once you know roughly how much your usual coffee, tea, or other habits already add up to, you can decide how much room is realistically left for something like caffeine gum — and adjust based on how your body responds, not just the numbers on a label.