Thanks for alerting me of this thread, jiigzz.
Contributing as always, Ben. Appreciate it.
OP,
The gut microbiome is a fascinating thing. I have some reading for you to do. Here is a great write up on the gut flora written by Zir Red:
Considering probiotics for health and performance? | Jason Cholewa - Assistant Professor of Exercise Science at Coastal Carolina University. He goes into detail of its purpose, problems associated with colonic micriobiota imbalance, and the concept of probiotics.
And to your question, Jason writes a small portion on exactly that:
Here are a few other studies involving alcohol, the gut microbiome, SIBO, inflammation, etc:
Colonic microbiome is altered in alcoholism | Gastrointestinal and Liver Physiology
Moderate alcohol consumption is associated with small intestinal bacterial overgrowth, study finds
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2842521/
You can also do some research on alcohol induced dysbiosis.
With all this said, I'm not sure how much of an effect a couple drinks will have on gut flora. Many of these studies involving dysbiosis were month long studies with daily alcohol consumption (or better said, administration, if it was a rat study). I wouldn't sweat it over a couple drinks. I'm not going to draw any correlations from those studies to say, specifically, that two drinks would warrant an increased dosage. If you are consistently drinking, then that is a different story. For
possible preventative measures (in your case after a couple drinks) and comfort of mind, you could increase the dosage of the probiotic.