Baclofen is a centrally acting muscle relaxant that is commonly used to treat spasticity in multiple sclerosis.

Gabapentin and pregabalin primarily act by inhibiting voltage-gated calcium channels, reducing the release of excitatory neurotransmitters and thereby alleviating neuropathic pain.

SSRIs are commonly used to treat depression in multiple sclerosis due to their efficacy and generally favorable side effect profile.

Amantadine primarily acts by inhibiting dopamine reuptake, increasing the availability of dopamine in the synaptic cleft and thereby improving motor function in Parkinson's disease.

Acetylcholinesterase inhibitors, such as donepezil and rivastigmine, are commonly used to treat Alzheimer's disease by increasing the levels of acetylcholine in the brain.

Levetiracetam primarily acts by inhibiting voltage-gated sodium channels, reducing neuronal excitability and thereby preventing seizures.

Triptans, such as sumatriptan and zolmitriptan, are commonly used to treat migraine headaches due to their specific action on serotonin receptors in the brain.

Lithium primarily acts by inhibiting dopamine reuptake, reducing dopaminergic activity in the brain and thereby stabilizing mood in bipolar disorder.

Haloperidol is a typical antipsychotic that is commonly used to treat Tourette syndrome due to its efficacy in reducing tics.

Clozapine primarily acts by inhibiting dopamine D2 receptors in the brain, reducing dopaminergic activity and thereby alleviating symptoms of schizophrenia.

SSRIs, such as fluoxetine and sertraline, are commonly used to treat OCD due to their efficacy and generally favorable side effect profile.

Risperidone primarily acts by inhibiting dopamine D2 receptors in the brain, reducing dopaminergic activity and thereby alleviating symptoms of schizophrenia.

Benzodiazepines, such as alprazolam and lorazepam, are commonly used to treat anxiety disorders due to their rapid onset of action and efficacy in reducing anxiety symptoms.

Topiramate primarily acts by inhibiting voltage-gated sodium channels, reducing neuronal excitability and thereby preventing seizures.

Levodopa is a dopamine precursor that is commonly used to treat Parkinson's disease by increasing the levels of dopamine in the brain.