My father was diagnosed with prostate cancer in June2005. He is now 85 years old and has been on Zoladex injections for 4 and a half years. These are given every 3 months. Since the beginning of his treatment he has become very breathless on any exertion. He is fine while sat but the moment he moves he finds breathing difficult. Is this breathlessness a side effect of the drug? I have asked the consultant at our hospital who could not give any satisfactory answer. Our G.P. just evades any mention of the breathlessness.