Thank you for the query.
Unfortunately there is no such pill. Depression
needs regular and long term treatment (which is not always effective). Its because the reason lies somewhere in brain biochemistry. To modify this biochemistry, antidepressants needs to be taken for a long time and first effects are noticeable after about 3 weeks.
However in some cases substances like THC
(marijuana) or even alcohol can improve the mood. But considering possible complication of its usage, are not a good idea in depression treatment.
Hope this will help. Feel free to ask further questions.