In my experience, drinking coffee on an empty stomach or when I’m already feeling acidic often leads to uncomfortable palpitations. It’s not just the caffeine that’s the problem—it’s the combination of hyperacidity and stimulation. When your stomach is producing excess acid, coffee can irritate the lining further, triggering not just heartburn but also a sudden spike in heart rate or fluttering sensations. This can feel alarming and is often mistaken for a more serious heart condition, especially when it happens frequently.
From what I've observed, this reaction is more common in people who are dehydrated or not balancing their coffee intake with enough water. Coffee is a diuretic, which means it can contribute to fluid loss and worsen the effects of hyperacidity. My personal recommendation? Always stay well-hydrated before and after drinking coffee and avoid consuming it first thing in the morning on an empty stomach. If palpitations persist, it’s best to cut back or seek medical advice—your body may be telling you something important.