<unk>  can produce gastrointestinal and central nervous system adverse effects. Approximately 6% of patients (compared to 4% of patients taking a placebo) reported side-effects at a dosage of 200 mg/d. Common side effects include: *nausea *upset stomach *nervousness *tiredness *lightheadedness *trouble sleeping (insomnia) *difficulty concentrating *confusion *anxiety<unk>  shows fewer CNS symptoms than its sister drug Amantadine.360x360px
Rimantadine
Amantadine
Quifenadine
Rupatadine
Alcaftadine
Loratadine
Oseltamivir
Tecovirimat