Another danger of taking Ambien overnight without a prescription is that you may not be getting the real thing. There are many websites that sell fake or counterfeit medications, and you could end up taking something that is not Ambien at all. This could lead to serious health complications, as well as legal trouble if you are caught with the fake drug.
It is also important to remember that Ambien is a controlled substance. This means that it is illegal to buy or sell it without a prescription. If you are caught doing so, you could face serious penalties, including jail time.
Overall, it is very risky to take Ambien 10mg overnight without a prescription. If you absolutely must take the medication, be sure to do so under the supervision of a doctor or other medical professional.