I was reviewing my w-2 and noticed that gambling winnings were added but no deductions for gambling loses. I thought I included that in my submission.
Yes you can amend your return to include your gambling losses to the extent of your gambling winnings. You can only offset the winnings. If you just filed your original return I would let it get processed and then amend your return. If you filed your return a while ago then you should be fine filing your amended return now.