Think timing first. If you’re new to an anticholinergic or just increased a dose, fast, hot, highly caffeinated coffee on an empty stomach can exaggerate dizziness, dry mouth, or “edgy” energy. A small cup with breakfast usually lands softer than a double shot before food. If light-headedness on standing is a theme, shrink the mug, sip slowly, add a glass of water, and avoid stacking the strongest coffee right on top of the dose. If sleep is precious (it always is), keep your last caffeinated cup early afternoon and switch to a smooth decaf later in the day.