Found this and thought I would share:
Halotestin Administration:
For the purpose of performance enhancement, Halotestin doses can range from 10-40mg per day. 10mg per day will produce noticeable results, but most will find 20mg per day to be a more beneficial dose that is controllable with proper use by a healthy adult male. If such a dose is tolerated well and more is wanted later on, 40mg per day can be attempted. However, such a dose will greatly enhance the probability of negative effects and may be overkill for some men. Regardless of the dose, 2-4 weeks of use is all that can be recommended. Further, regardless of the dose, like most oral anabolic steroids Halo should be taken on an empty stomach. Taking it with food may decrease its bioavailability.
Here is a reference link of you are interested: https://www.steroid.com/Halotestin.php