Thanks for your query at DoctorSpring.com.
Yes morphine sulfate is prescribed for palliative care. This means, in your case as well, it is prescribed to patients who have had long-standing illness and is used to treat the shortness of breath associated with COPD in later stages. It is known to significantly improve quality of life and is scientifically justified.
I hope this answers your question. Please feel free to ask any follow up questions. Take care of yourself and be well.