Yunker Energy is the best-selling nutritional tonic in Japan for good reason: it is an effective blend of carefully selected herbal medicines, vitamins and other nutrients that help invigorate the body's metabolism and increase blood flow. This provides busy people with the energy they need to keep going – at work; enjoying sports; and whenever fatigue is keeping them from doing their best.

Yunker Energy's Herbal Essence
From its earliest days, Sato Pharmaceuticals has drawn both on the Western medical traditions which grew in Japan along with the company, as well as the Eastern traditions of shoyaku, literally "herbal medicine". Related to kampo, an ancient practice based on Chinese medicine, shoyaku relies on a regimen of specific herbal ingredients, often used over time rather than applied simply to resolve a particular ailment or complaint.

Herbal medicine nearly disappeared as Western medicine was introduced into Japan – but it has boomed in popularity in recent years to the point where Western medicine and traditional herbal treatments now exist in complementary forms. In fact, today most Japanese physicians prescribe herbal-based medicines as part of their treatments and they are covered by national health insurance. In Yunker Energy, herbal ingredients with proven medicinal benefits such as ginseng extract and royal jelly are combined with vitamins and other ingredients in an enjoyable, drink-type tonic. This proprietary "herbal essence" allows Yunker Energy to provide natural, effective, enjoyable relief from fatigue, an extra energy boost, excellent cosmetic effects, and basic good daily health.