What Are The Side Effects Of Hormonal Treatment For Prostate Cancer?

On 26th February my husband commenced hormonal treatment for prostate cancer and has been feeling a bit wonky a couple of times - wondering if this is a side effect. In December 2013 he had a radical but unfortunately cancer was in a lymph node PSA was 40 prior to radical then went right down but last psa in February it had risen to 19. In February 2015 he had a hernia operation (due to radical) and because he is on warfarin for mechanical heart valve and had to go off warfarin to have this operation we at first through the wonky feeling may have been caused by his low inr level but inr is now up to 3 and he today had another wonky episode. Maybe you can throw some light on the problem thanks