I some time ago I posted about mistaking10 mg for 5mg and using 60mg per day . This usage was for about 3weeks until I saw 10 imprinted on it. and on the same day had an Achilles’ tendon tear. I have now reduced to 15mg per day. I am 76 and still working but if I go below 15 mg I find I am not fit to work. I think I am stuck with them for the rest of my life but if things stay as they are I will be Happy enough. Only snag is easy bruised and back of hands pretty black and blue.