Ohhh hiccups.
About 10years ago I had a meal with bell-chillies (raw).
(about 8 on the Richter scale hot....
)
After I had the third, a shock-wave run true me.
.
.
3 days later I was bugged
I couldn't drink a glass of water without making a mess, my abdomen was a steel from a forced exercise....
The GP called a prof. at the uni for advice, and give me a sedative.
Stayed home for the 4th. day knocked out from the chill-pill.
It worked, overnight it went away. After that the GP told me he and the prof. had no hope to stop it. It was a gamble...
Good luck,
Mick.