Right now I am taking a liquid made by Kitsnmore that is 30mg/ml. I take 1/2ml of this liquid every third day. I measure the 1/2ml in a 3ml plastic syringe, so that is a 15mg dose every three days.
You have to take the dosing of this stuff seriously because the side effects are uncomfortable. Take care to know the exact concentration you are making and then take care to take the appropriate dose. Start off in the 10mg to 15mg range.
If you put 500mg’s into 20ml’s you have made a 25mg/ml concentration, so if you take 1/2ml, your dose is 12.5mg which is a good place to start.