The tyrosine may not be doing anything to your liver, but maybe - for some unknown reason - it is stimulating your gall bladder; maybe you should have your gall bladder checked.

Tyrosine can be very helpful in concentration, but sometimes it seems too intense.

Have you ever tried Acetyl L-Carnitine, first thing in the morning on an empty stomach --- take one or two grams, it makes you very alert, but does NOT have that intense almost anxious acuity of the tyrosine.

I've read online that Acetyl L-Carnitine often helps people who have depression and/or ADD.

But it must be taken first thing in the morning on an empty stomach.

I think that I read that the reason the Acetyl L-Carnitine is so transformative, in a positive, calm manner, is that this substance is necessary for the formation of the neurotransmitter acetyl-choline.

I've not read anythng about Acetyl L-Carnitine & dopamine, you might research that; but the Acetyl L-Carnitine provides some people a very clear lucid alert mind state in which concentration is enhanced.

Maybe it will assist you, too.