In short, No, because Adderall is a controlled substance, you cannot purchase Adderall without a prescription. According to the Drugs Act, the patient should appear physically to the doctor to obtain the medication. 

Many websites claim that they can prescribe Adderall, but it is not valid. And if they do provide you with the prescription, it would not be valid in other pharmacies.

The government restricts the usage of this medicine because it is a potent drug and many people use this medicine for recreational purposes.

However, if you want to treat ADHD, several non-stimulant drugs can help you with the disorder. Online doctors can prescribe you medicines like Strattera, Atomoxetine, and bupropion. These drugs do not provide immediate results like stimulants, but they are equally effective and less risky in the long run.

If you want Adderall to be prescribed, you need to physically go to the doctor to diagnose the symptoms. You need to see certain signs before going to the doctor, like:

If it is difficult for you to identify or notice small details.

Always disorganized

Distracted easily while performing a task.

If you have chronic procrastination