Hveragerthi
The nausea could be from a simple infection. Maintaining stomach acid and
Antibiotic herbs such as pau d' arco will help deal with stomach infections.
As for the nausea, studies have shown that ginger suppresses the vomit centers in the brain better than the anti-nausea drug Dramamine. You can use dried or frozen ginger to make tea, or use capsuled powder, or even no
Sugar added ginger chews.
To help with the alcohol withdrawal I recommend the herb kudzu root and the amino acid glutamine. Both have been shown to help reduce alcohol cravings. Both need to be taken on an empty stomach at least 30 minutes before meals.
Nutrition is also going to be important, especially B vitamins, chromium and magnesium. Nettle leaf is a good source for all of these.