your bottle also says it contains 45 services which means each cap is 10 mgs.
As far as I know Epistane is made only IBE I've never seen this by any other maker.
What should your dosage be depends on experience, if this is your first cycle start low and see how your body reacts.
BTW, do you have a PCT plan ready for recovery from your cycle? If not my advice is you should postpone your cycle and do some research before you start your cycle.