My approx 5 y/o barred rock hen is displaying the signs of mereks. I read to administer 10-15 drops of st johns wart twice per day. So im giving her 6 ML as it measured 15 drops, twice per day. After 2 days, yesterday, she seemed to be making a strong comeback. But she seems now worse this morning. Its harder to walk and shes not passed any solid stool since we found there was a problem 3 days ago. Shs drinking wwll but not eating much. Please help.