do supplements go bad

[swan]

well i have been wanting to get bigger and stronger for sports but dont quite have the money or dont want to spend too much money on supplements but i found expired supplements for real cheap. is it worth buying them? does only certain type of supplements go bad? i mostly plan on using creatine or NO but might use others. thanks

[Bluto]

you should be able to get regular creatine cheap as it is these days, but depending on your sports it might not do that much difference, maybe a 5% strength increase or so tops