Thanks for the query to H.C.M. Forum.
Since, how many day ,you are using LISINOPRIL
Mention the exact dose 2.5 , 5 , 10 mg.
Beside other side effects of lisinopril ,two are here as,
hyperkakalaemia( increase concentration of potassium in body).
Prolonged hyperkalaemia impairs membranes hence develops WEAKNESS.
Weakness and lethargy
are side effects of lisinopril.
Consult your treating physician and get in his opinion.
Hope I have answered your question.
If further any question I will help.
Get well soon.