If you're asking what a low dosage is for a bridge cycle then I'd guess 20mg would be sufficient. Most people recommend 40mg or so for growth. Being that we aren't interested in growth, only maintenance during the bridge I would have to guess that 20mg is plenty. Also it depends on the brand. If you got true oxandrin then 10mg may be enough but it is so damned expensive. If you're getting chinese or mexican anavar then I'd have to say 20mg should be enough. You could probably get away with less but considering the price you don't need to risk it.