I found this on the internet
Day 1: .50mg Letro
Day 2: 1.0mg Letro
Day 3: 1.5mg Letro
Day 4: 2.0mg Letro
Day 5: 2.5mg Letro **
*Regardless of the anti-e you are using it is important to still use it for the first day you begin letro as the letro will not have taken any effect and you by no means want your body to be without any protection when gyno is already prevalent.
** You will remain at this dose until gyno symptoms subside. Once you believe your gyno is gone it is important to stay at this dose for another 4-7 days to ensure all traces are gone. I recommend people with a bf% over 15 stay on for a week as it may be harder to judge completely whether the lump is completely gone. Once this period is over it will be important to taper letro down slowly rather than coming off it completely. Regardless of which manner you tapered up your dose you will all taper down in the same fashion.
Day 1: 2.0mg
Day 2: 1.5mg
Day 3: 1.0mg
Day 4: .50mg***
Day 5: .25mg