What antidepressant/anti-anxiety medication works the fastest?

It can take 6 weeks . For medications to work. Medication work 45% of time, therapy work 35% of the time , together they can work 85% of the time.
Antidepressants. All antidepressants take time to work (4-6 weeks) & have side-effects. Tolerance & side-effects differ in different people.