You're not bad at sleeping. You're still caffeinated.

It's 1:40am. You can't sleep. Again.

Tomorrow you'll be wrecked by 2pm. You'll fix it with coffee. That coffee is the reason you'll be awake again tomorrow night.

The fix isn't new. People have been using it for about two thousand years. We just worked out which part of it does the work.

You're still caffeinated.

Caffeine doesn't wear off. Your liver has to break it down, and one coffee takes about 12 hours to clear your system.

Now do the subtraction on your own day.

Nobody ever tells you that. So you have one at 3pm like everybody else, and then you lie there at 1:40am wondering what's wrong with you.

Nothing is wrong with you. You're just still caffeinated.

Same for tea, energy drinks and pre-workout. It's the caffeine, not the coffee.

Your liver clears caffeine with an enzyme called CYP1A2.

How fast it runs is mostly genetic, and the difference between people is huge. Some people drink espresso after dinner and sleep fine. You have a green tea at 2pm and you're up at midnight.

That's not weakness. That's an enzyme running slow. And if yours runs slow, your cutoff is even earlier than 11am.

Every bad night gets paid for the next day. You're slower, you're short with people, and you drink more coffee to get through it.

That extra coffee ruins the next night. Then you do it again.

That's not a bad week. That's a loop, and it doesn't stop on its own.

You have two options that everybody knows about. Give up coffee, or take something that knocks you out. You already know how both of those go.

There is a third one, and almost nobody has heard of it.

You can help your liver clear the caffeine faster. Not block it, not mask it, not sedate you on top of it — actually get it out of your body sooner, so that by the time you go to bed there is nothing left in you to keep you awake.

You keep the afternoon coffee. It just isn’t still in you at midnight.

In southern China there's a tree called Evodia rutaecarpa. Farmers pick the fruit while it's still green.

The fruit speeds up the enzyme your liver uses to break caffeine down. Your body is already doing that job. This makes it run faster, so the caffeine is out of you sooner than it would have been on its own.

It shows up in Chinese medical writing from two thousand years ago, and it has been in use ever since. Twenty centuries is a long test. Things that don't work get dropped faster than that.

What nobody could explain until recently was which part of the fruit was doing it.

The part of the fruit doing the work is a compound called rutaecarpine. You don't need the rest of the fruit, so we left it out.

Rutaecarpine is the only ingredient in the bottle. 50mg a capsule, and nothing else in there. The product is called Goodbye Caffeine, because that is the whole job it does.

It speeds up CYP1A2, the enzyme that is already clearing caffeine out of you, so your afternoon coffee is gone by the time you want to be asleep.

It does not make you sleepy. There is nothing sedating in it. You fall asleep on your own, the normal way.

That is the difference. Everything else adds a drug on top of the caffeine. This one takes the caffeine away.

Say you had a coffee at 4pm, which is hours past the cutoff you worked out earlier. On a normal night that is the cup that keeps you up.

You take two capsules at around nine, a couple of hours before bed. You don't feel anything happen, because there is nothing to feel. It is not a sedative and it is not supposed to make you drowsy.

You get into bed at your usual time and you fall asleep at your usual time, the way you did before any of this started.

In the morning there is nothing to shake off. No fog and no heaviness, because nothing was ever added to you. The caffeine had just gone.

The thing most people notice after a few weeks isn't the sleep itself. It is what stops happening the next day.

You stop needing three coffees to get through a day that a bad night created. You are not fixing yesterday any more, so the afternoon cup goes back to being something you have because you want it.

And because that cup is no longer the thing wrecking the next night, the loop that has been running for years just stops.

These are customers who wrote in after trying it. Most of them describe the same two things: they had no idea caffeine stayed in them that long, and they had already tried the obvious fixes before this one.

One bad night costs you a whole day. You've had hundreds of them for free.

Take two capsules an hour or two before bed. You'll know by the time you'd normally be lying awake.

If it doesn't work, email us and we refund you. No forms. Don't send the bottle back.