The trendy Tokyo expat magazine calls Firefly "the one-sip solution to health, well-being and hangovers"

If you can't make it out, here's a quick transcription:

Frequent encounters with indegestion have taught me to be wary of British cuisine. But there is one food item I have always envied of the Brits: the lovely pre-bottled smoothies and juices so widely and conveniently available from their sandwich shops and grocery stores. For years, and I mean years, I asked myself why such drinks remained unavailable on the Japanese market.

Turns out the same question was keeping others awake at night. At long last, Firefly Tonics is selling their magically delicious products Japan-side. Available in four varieties, each drink contains fruits and herbs to treat a specific problem or ailment. The De-tox is ripe with lemon, lime and ginger to cleanse the body from the inside out - the perfect antidote to late nights and hangovers. Wake up contains peach and green tea to help you greet the day, while the apple and lemon balm in Chill out offer a relaxing way to unwind. Get a head start on the sniffling season by stocking up on Self Defense, a drink infused with wild orange and echinacea to keep those viruses at bay.

With a fan base that includes that young master of intoxication, Prince Harry, you can be sure these potent tonics boast no false claims. As for myself, I look forward to a fast recuperation the next time I indulge in a dinner of fish-n-chips.

Firefly Tonics for Y500 a bottle at National Azabu Supermarket (Hiroo, 03-3442-3181) and Nissin World Delicatessen (Hamamatsucho, 03-358304586).