Feeling tired worries low energy dr.says it as depression advise duloxetin20mg for a month & clonazedam 0.25 mg for 5 days shall i go ahead?

Yes.: I think the Cymbalta (duloxetine) is alright. If you are not sleeping well, the Klonopin might help if taken at night. It may make you tired during the day. I don't think 5 days is enough if you are taking the Cymbalta (duloxetine) for depression because it takes 2-4 weeks at the right dose to feel significant improvement. It might be helpful if you check your throid function as it maybe low causing the low energy.