As I am not a medical doctor I cannot comment on whether or not Epilim and Concerta can be taken together. There can be no harm in discussing your concern with your GP or another specialist as well as with the prescribing doctor. You are more than entitled to ask any questions and ask for substantiating studies if that would ease your mind.
As a mom, you only want what is best for your daughter and rationalising medications can be very difficult, especially when we don't have the knowledge the doctors have tucked away in their brains.
To answer you question regarding 'normal' medication levels, there is unfortunately no standard; it is entirely dependent on the person and the situation.
I wish I could provide you with more concrete answers. Listen to your gut and keep a record of your daughters daily behaviours. If you notice any negative changes speak to your prescribing doctor about them. If all the changes you see are positive, there is likely little to worry about.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.