My husband has had msa for almost 8 years now. He used to get hiccups that lasted for days without stopping. He went to ER for relief but they didn’t know much. Finally a dr. from UCLA recommended Baclofen! It worked like a dream. I just keep some on hand and administer during a hiccup episode until they go away. It will make your husband quite sleepy and out of it. Those long term hiccups set your husbands health back and it’s hard to gain ground again. My husband is on no specific meds. It has to do with the inability to control the air passing in and out. This will surely help!