Where to Buy ADHD Medication in the UK In the UK there are a range of drugs are prescribed to treat ADHD. There are many medications that can be prescribed for ADHD in the United Kingdom, including methylphenidate, lisdexamfetamine and Atomoxetine. These drugs work by increasing the neurotransmitters in the brain. This helps improve concentration. These medicines are only available on prescription and must be prescribed by a psychiatrist.