IF Naruto use rasengan so much , is there any effect ?

[Excel Geass]

?? U_U

 

[King Of Sharingan]

loss of chakra...i guess

 

[Deadai]

Of course its still effective there is no reasion that it should not be

 

[Rayman1]

Effect = More of a chance he'll eventually hit.

 

[Kages]

He'll be tired lol

 

[The Great Narumaki]

loss of chakra..what else?

 

[Xlad]

You can use it as many times as you want and still not get tired. But it can still blast through metallic water towers and that kind of crap.