Probiotics are live bacteria and yeasts that have been shown to have a variety of health advantages. They're often termed as "good" or "friendly" bacteria and are commonly added to yoghurts or taken as dietary supplements. When the normal balance of bacteria in your gut (including your stomach and intestines) is upset by an illness or treatment, probiotics are thought to help restore it. Probiotics are also beneficial to your metabolism. If probiotics have any negative effects, they are probably minimal and digestive in nature (such as gas or bloating). Probiotics may induce infections that require antibiotic treatment, especially in those with underlying health problems. Biogenic amines are present in several probiotic-rich meals. When bacteria ferment specific proteins, certain compounds (tryptamine and phenylethylamine, for example) form. People who are sensitive to amines may find that the food triggers their central nervous system, resulting in symptoms such as headaches.