How many ml do you have to take liquid methadone per day?

You should never take more than 32mg a day. But in reality you can get by just fine with 8-16mg. You do not need more than that, because that is all it take to completely saturate your opiate receptors! So anymore after that is just a waste of money.

Edit:

Yes, after 1 to 2 -8mg pills the effects do not increase, in my experience.

I would NEVER take more than 16 mg in one day... that's asking for side effects like aggravation, irritation, and loss of sex drive.

However, my friend took 13 -8mg pills (over the course of 24 hours) before he went into jail, and he is still alive and kicking (no pun intended lol).

I personally never take over 4 mg per day, and I'm cutting back even more from here.