Hello, Welcome to the forum. I can understand your anxiety and concern for your husband. High potential medications have been prescribed to him that may pull a lot of his energy to get metabolized and absorbed for better results. Therapy and diet should go together. Hope your treating doctor has explained you about the type of diet that should be given. Between therapy men often complain of weakness, dizziness, mood fluctuations, depression, etc. It is natural. If you feel the medications do not suit him and are producing adverse effects, you can consult your treating doctor and reduce the dosage or get some better substitutes. Patience is what both of you need to have. Take diet rich in protein, minerals, calcium and fibre. Nuts, milk, dairy products added with fruits and green vegetables should be taken. Multivitamin tablets and anti-depressants can help. Exercise and a good sleep are equally important. It will be helpful if you follow my advice. If you have problems I am there to help. Take care.