Is taking 2 x 25 mg tablets the same as taking 1 50 mg tablet? (Sertraline)?

I have just had my dose of sertraline increased from 25 mg to 50 mg.
However I have loads of 25 mg tablets remaining, and can't really afford to buy a new set of 50 mg at the present.

Would taking two 25 mg tablets, be just the same as the one 50 mg tab? What would the differences be?

Thanks