I Have Been Taking Solifenacin 5mg Then 10mg For The

I have been taking Solifenacin 5mg then 10mg for the last six months, had a routine blood test two weeks ago, I have poly cystic liver disease, the doctor phoned and said my liver enzymes were up so to stop taking them straight away and then I am due another blood test in the morning, I have since got really bad back ache is it linked to suddenly stopping the medication xx
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Many thanks xx Carol x