My friend got a red rash after drinking 4 loko. What should we do?

Four Loko alcohol. Symptoms of alcohol intolerance may include: headache, flushing, hives, nasal congestion, GI upset, nausea/vomiting ; low blood pressure. You could be allergic to alcohol or it's ingredients such as yeast, grains, sulfites, histamines ; other chemicals. I would encourage him not to drink alcohol.