What is the primary indication for Phenytoin Sodium?

Phenytoin Sodium is primarily indicated for the control of seizures, making it a crucial medication for patients with epilepsy and other seizure disorders. This antiepileptic drug works by stabilizing neuronal membranes and decreasing the likelihood of seizure activity in the brain. Its effectiveness in managing and preventing various types of seizures, including tonic-clonic and focal seizures, highlights its importance in the treatment of epilepsy.

The other options relate to conditions that Phenytoin does not treat. For instance, the management of high cholesterol involves different classes of medications such as statins or fibrates, not antiepileptics like Phenytoin. Similarly, the treatment of asthma and COPD typically involves bronchodilators and corticosteroids, which target airway inflammation and constriction. Lastly, bacterial infections are treated with antibiotics, which are entirely separate from the anticonvulsant action of Phenytoin. This specificity reinforces why Phenytoin's primary indication is centered on seizure control.