Yes, but it might also be that you're drinking "coffee" (I assume you mean drip / pour-over) in the morning when you are just out of bed and have almost nothing in your stomach. Whereas the espresso you're drinking at a shop later in the day, probably already with breakfast in your stomach and maybe you're ordering a snack with it.

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hastamelo 14 hours ago | parent [-]

why would it matter what's in your stomach? caffeine goes pretty quickly to the blood stream, right?

	▲	ororroro 13 hours ago \| parent \| next [-]
		> A high carbohydrate meal consumed prior to caffeine ingestion significantly reduced serum caffeine concentrations and delayed time to peak concentration https://www.sciencedirect.com/science/article/abs/pii/S14402...
	▲	smallerize 13 hours ago \| parent \| prev \| next [-]
		Caffeine is a stimulant, acting on the sympatheitc nervous system. If you're also activating the parasympathetic nervous system, like by eating a meal, the effect won't be as strong. Another effect of caffeine is as an adenosine re-uptake antagonist. Adenosine levels are usually low in the morning, so the effect is small. Later in the day, it can have a bigger effect on how alert you feel.
	▲	Insanity 13 hours ago \| parent \| prev \| next [-]
		I heard that the anxiety from caffeine is worse when you haven’t eaten. No time to check resources for that at the moment
	▲	serf 6 hours ago \| parent \| prev [-]
		having a full stomach has a moderating effect on most drug uptake.