I have been taking .5 ativan (lorazepam) twice a day for 3 weeks for anxiety as prescribed by my m.d. if i quit cold turkey will i have any withdrawal problems?

Stopping Benzos: Maybe. But, you do not have much of a history. But, there is no danger given your story for stopping abruptly.

You will have it!: Withdrawal sx would be somewhat dependent on the time you have been taking the ativan (lorazepam). Your med bio says you've been on it three weeks, so i would cut back to 1/2 twice daily, 1/2 once daily, and stop.