Hello, Thanks for Writing to Health Care Magic and putting trust in us regarding your Health related query. I am Dr. Saleha and I have read your message in detail, I understand your concern and will try to help you in this. I am sorry to know what have your father been suffering from , excosprin contain Aspirin which is a drug that works as blood thinner in simple words and protects the patients from having any cardiac events. There are two things which have happened in your dad s case. A) Vomiting . B) Blood in vomit. Now i will explain to you why this might have happened. A) Vomiting. Aspirin has a side effect that it might cause stomach irritation and even ulcers which cause stomach discomfort and vomiting. B)Blood in vomit: As i told you Aspirin is a blood thinner and it also causes ulcers in stomach so when there is ulcer and your blood is thin..blood oozes out of that ulcer into the stomach and cause blood containing vomiting. What to do about it? You dr did the right thing that he stopped Aspirin, now next thing is to protect stomach. For that your father should get few things done. +Avoid fizzy drinks,coffee,cafeine,chocolate. +Avoid smoking,alcohol,spicy food.(what ever applies). +Use much fibre in food. +Avoid pain killers, not prescribed by a doctor who knows about stomach issues. +He can take syrup gaviscon. +I would suggest my patients to take motillium which helps with vomiting and ulcer too. +PPI like omeprazole is also recommended you can discuss with your dr. I hope this answers your question.If you have more questions, I am happy to answer. Wish you lasting health. Regards. Dr.Saleha Saeed.