mania:...As a generally healthy person I stick to this rule - so I don't take pain killers when diving (even if I have a headache evening before), I don't take seasickness medicine etc. But if you have to take medicine - check it first with the appriopriate MD...
...For me and strictly for me the fact that it may cause nausea is enough reason not to dive while taking doxycycline...
That rule is okay as a personal rule
![Big Grin :D :D](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png)
Almost every drug out there MAY cause nausea in someone. Drug companies are required to state this if even just one person became nauseated during trials.
I'm not big on taking meds myself, but some people need them for real medical reasons and shouldn't be afraid to take their meds on dive trips.