Singapore’s consumer watchdog has issued a warning to adolescents about the risks of combining multiple caffeinated beverages after tests revealed that popular drink mixtures often exceed safe caffeine limits for teenagers. The Consumers Association of Singapore (CASE) conducted tests on six common combinations of caffeinated drinks and found that all contained caffeine levels above the recommended daily intake for those aged 12 to 18.
Among the tested mixtures, two combinations involving an energy drink mixed with espresso showed “substantially higher” caffeine content. The highest level recorded was 282.1 milligrams of caffeine per 350-gram serving, found in a blend of espresso with the energy drinks Monster and Red Bull. This amount is almost three times the advised daily maximum for adolescents and roughly equivalent to the caffeine in three cups of brewed coffee. The other four drink combinations, each containing a single energy beverage mixed with coffee or matcha, contained between 100.45 mg and 106.4 mg per serving.
CASE highlighted that consuming excessive caffeine can trigger adverse effects such as headaches, rapid heart rate, anxiety, tremors, and insomnia. While there is no international consensus on daily caffeine intake, the Health Promotion Board in Singapore recommends that healthy adults limit consumption to 400 mg per day. For youths aged 12 to 18, the American Academy of Pediatrics advises a maximum of 100 mg daily. Additionally, the KK Women’s and Children’s Hospital recommends that children under 12 avoid caffeine entirely.
CASE released the findings on September 22 with the dual aim of providing objective caffeine content information and raising public awareness about the risk of inadvertent overconsumption, particularly among young consumers. The alert follows media reports of youths mixing different caffeinated drinks, often without fully understanding the cumulative effects on caffeine intake.
CASE president Melvin Yong, also a Member of Parliament for Radin Mas, noted that school exam periods often lead young people to consume caffeinated drinks for increased alertness. He urged both youths and parents to monitor total caffeine intake carefully and to avoid combining several sources of caffeine in a single beverage. Yong further recommended checking caffeine labels when available and seeking medical advice if adverse symptoms persist or if sleep disturbances occur after consuming caffeinated products.
In a related context, in September 2025, Yong raised questions in Parliament regarding whether the Ministry of Health was studying international measures to restrict sales of high-caffeine energy drinks to young people and if any local research had been conducted on their impact. The ministry replied that no studies on the matter were underway at that time. Meanwhile, the British government announced plans in July to ban the sale of high-caffeine energy drinks to individuals under 16 in England starting April 2027 to safeguard children’s health.