What is the best oral minoxidil dose?

Have you seen 1.25mg effective for growth? Or do you like to go higher?

Yes, I have seen good growth at 1.25mg. Sometimes if there is little or no response I go up to 2.5mgs of oral minoxidil. Remember, only about half of people are minoxidil responders but that number reflects the topical dose.  Responders with the oral dose are in the neighborhood of 95%.