Well tell us more about you, especially your stats, training and cycle history. BTW, anavar and oxandrolone are the same. But anavar and clen can make a very good cutting cycle.
If you really wanna run anavar alone then at least do it at 40-50mg ED for a good 6-8 weeks. Take a shitload of protein (2g/lbs) and enjoy the strenght and the quality gains.