> In 1919, the Japanese discovered a more potent version of the drug — methamphetamine. The new drug was a crystalline powder soluble in water. In this form, it can be smoked, injected, snorted or taken orally. Users get an intense but brief high when they inject or smoke the drug, but if it's snorted or taken orally by capsule, the high lasts longer.

There was also a drink with same name hiropon that was generally available for some time.

I tried googling for more info but I haven't been able to find much in English and my Japanese isn't good enough to read at that level. I've only heard about it from my wife and a few other people in Japan. I've seen a few old posters for it at old bars.