The side effects can be "mildly" unpleasant, but it is typhoid, after all. The package insert says
The overall symptom rates from both studies when vaccinated with capsules were combined and shown to be: abdominal pain (6.4%), nausea (5.8%), headache (4.8%), fever (3.3%), diarrhea (2.9%), vomiting (1.5%) and skin rash (1.0%).
Well, call me statistically significant. All I can say is that when one quarter dose produces a reaction within the hour (the oral vaccine is four capsules taken over six days), I'm sure glad I'll have some immunity to the real thing when I get there. Meanwhile I'll just have to deal with "mild flu-like symptoms" for a few days.
Don't tell my office mates.