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CASE’s Caffeine Tests: Why Mixing Energy Drinks and Coffee Is Risky for Teens
All six mixes tested by Singapore’s consumer watchdog exceeded the cited 100 mg daily caffeine recommendation for ages 12–18. CASE advises teenagers not to combine energy drinks with coffee or matcha, and urges families to consider caffeine from every drink consumed during the day.
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Key takeaways
- All six mixes tested by Singapore’s consumer watchdog exceeded the cited 100 mg daily caffeine recommendation for ages 12–18.
- CASE advises teenagers not to combine energy drinks with coffee or matcha, and urges families to consider caffeine from every drink consumed during the day.
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openai.comCreate a landscape editorial hero image for this Studio Global article: What did the Consumers Association of Singapore’s tests of six mixes of energy drinks, espresso and matcha reveal about caffeine levels—incl. Article summary: CASE found that **all six tested mixes exceeded 100 mg of caffeine per serving**, the recommended daily maximum cited for 12- to 18-year-olds. The strongest—a mix of Monster, Red Bull and espresso—contained **282.1 mg**,. Topic tags: general, government, news, general web. Style: premium digital editorial illustration, source-backed research mood, clean composition, high detail, modern web publication hero. Use reference image context only for broad subject, composition, and topical grounding; do not copy the exact image. Avoid: logos, brand marks, copyrighted characters, real person likenesses, fake screenshots, UI text, readable text, watermarks, charts with
One mixed drink can contain more caffeine than a teenager is advised to consume in an entire day. That was the finding behind a warning from the Consumers Association of Singapore (CASE), which tested six combinations of energy drinks, espresso and matcha. Every tested serving contained more than 100 mg of caffeine. 17
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What did the six tests find?
Four mixes containing one energy drink measured 100.45–106.4 mg of caffeine per 350 g serving. The two mixes combining energy drinks with espresso were substantially higher. The strongest—a mix of Monster, Red Bull and espresso—measured 282.1 mg per 350 g serving, which CASE likened to about three cups of brewed coffee. These figures describe the tested recipes, not a guaranteed caffeine content for every drink made with those ingredients. 8
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Why is CASE warning teenagers?
The cited recommendation for adolescents aged 12–18 is no more than 100 mg of caffeine a day. Even the lowest-caffeine mix CASE tested crossed that amount in a single serving; the Monster, Red Bull and espresso mix contained nearly three times as much. Guidance of up to 400 mg a day for healthy adults is not a teenage target. 7
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Excessive caffeine can cause shakiness, anxiety, headaches, difficulty sleeping and a fast heartbeat. CASE’s concern is that combining drinks makes it easy to overlook how much caffeine has accumulated—not only in the mix itself, but across the rest of the day. 8
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For teenagers, the practical step is to avoid stacking energy drinks with coffee, matcha or other caffeine sources. Parents can check available caffeine labels and serving sizes, ask what their children drink to stay alert, and pay attention if caffeine appears to be affecting sleep or causing palpitations. 8
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What is the policy context?
Singapore’s Ministry of Health said in July 2026 that it was monitoring international developments and that no local study was then underway on the effects of high-caffeine energy drinks on youths. England has announced a ban on sales to under-16s of drinks containing more than 150 mg of caffeine per litre, excluding tea and coffee. It was reported as due to begin in April 2027, subject to parliamentary approval. That sales threshold measures caffeine concentration; it is different from the 100 mg daily intake recommendation relevant to CASE’s tests. 15
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What is the short answer to "CASE’s Caffeine Tests: Why Mixing Energy Drinks and Coffee Is Risky for Teens"?
All six mixes tested by Singapore’s consumer watchdog exceeded the cited 100 mg daily caffeine recommendation for ages 12–18.
What are the key points to validate first?
All six mixes tested by Singapore’s consumer watchdog exceeded the cited 100 mg daily caffeine recommendation for ages 12–18. CASE advises teenagers not to combine energy drinks with coffee or matcha, and urges families to consider caffeine from every drink consumed during the day.