I agree, you must always follow your doctor's instructions when going from one medication to another, and the Klonopin will not work immediately it takes a couple of weeks. Because Klonopin has a shot life, I would assume your doctor prescribed it 2 x a day?
What did your doctor instruct you to do? How did he tell you to transition from one med to another? How is the Klonopin prescribed. If you just started the Klonopin, it is too soon to determine that it is (or isn't) working. You have to transition from the Xanax to the Klonopin, and also be sure that the Klonopin is being dosed twice daily, for the best results.
Here, I found it for you. You can do the maths out yourself.
In order for Klonopin to replace Xanax, it must accumulate. Klonopin accumulates to steady-state within two weeks, at which point it will fully replace the Xanax from a potency standpoint. Xanax doesn't accumulate, therefore, simultaneously replacing it with Klonopin would lead to withdrawal phenomena. The Xanax plasma level would trough sharply, and there would be nothing to replace it.
Therefore, it would be advisable to "step" the Klonopin in, while simultaneously stepping out the Xanax. This is best done in 0.25 mg increments.
*Example* - You were formerly taking 0.5 mg of Xanax three times daily, and the goal is to transition to Klonopin, 0.5 mg, t.i.d....
Days 1-3: Take 0.5 mg of Xanax in the morning and afternoon. Take 0.25 mg of Xanax and 0.25 mg of Klonopin nightly.
Days 3-6: Take 0.5 mg of Xanax in the morning, and 0.25 mg of Xanax and 0.25 mg of Klonopin in the afternoon and nightly.
Days 6-9: Take 0.25 mg of Xanax and 0.25 mg of Klonopin in the morning, afternoon, and nightly.
Days 9-12: Take 0.25 mg of Xanax and 0.25 mg of Klonopin in the morning and afternoon. Take 0.5 mg of Klonopin nightly.
Days 12-15: Take 0.25 mg of Xanax and 0.25 mg of Klonopin in the morning. Take 0.5 mg of Klonopin in the afternoon and nightly.
Day 18: Take 0.5 mg of Klonopin, t.i.d. The Xanax is discontinued.
This is the accelerated method of transitioning from Xanax to Klonopin. The three day intervals may be extended to one or two weeks if necessary. This is rarely necessary.
You can discuss a similar schedule with your doctor. It is absolutely crucial that the Klonopin be taken at least twice daily. It depends on how many times/day you take Xanax. If you take it three or four times daily, the Klonopin should also be taken three or four times daily initially.
You mean klonopin? That would depend on how long you were on xanax for. There is a way of switching over from one to the other. It is not done by just stopping the xanax and starting the klonopin. If you type in a search I am sure you will find the method posted by Ryan. It takes a bit of time.