My mother suffers from terrible psoraisis which covers her body and head. She has been on a very strong dose of drugs (chemotherapy) but it has only made her ill. She has come off these. She has also recently heard that horse milk can help. Is this true and what kind of dosage would be needed? She is just under 5' tall and weighs about 8stone 6lb. He has had a hysterectomy and major heart surgery - triple by-pass. She is 83 years old. Thank you.