And it is related to ephedrine, which can cause blood vessels to constrict.

这与素有关，素会导致血管收缩。

That medication might be ephedrine that's on a crash cart that's been around since 1905.

那种药物可能是从1905年就开始急救车上素。

And I started popping hydroxycut diet pills, the ones that had raw ephedrine in them.

我开始服含有碱羟基切割减肥药。

But the track stack, which has beta alanine and not ephedrine, is really good at encouraging an extra top end effect.

但含有β-丙氨酸而碱track stack，在促进额外高端效果方面确实表现出色。

So I'm old enough to remember when they would sell it as the triple stack with ephedrine, but some people dropped dead and they took it off the market.

所以我记得当年它作为三重堆栈搭配碱出售时候，但有些人因此猝死， 所以他们把它从市场上撤掉了。