Melanotan II Question

Just got my order of Melanotan II. It's been a while since I've done the stuff so I'm not 100% sure on this, but here it goes. I got 20 mg total but if I'm not mistaken, when I got it before it was 1 mg per bottle and 10 mcg's was an average dose. This time they sent me 2 bottles with 10 mg in each bottle. Would that be 100 doses in one bottle? That can't be right can it? Wouldn't it go bad? Could I be mistaken and 1 dose is 1mg? If someone could refresh my failing memory I'd really appreciate it.