No they inhibit CYP1A2 the enzyme that metabolizes caffeine.
You have it ass backward.
Inhibiting the metabolism of A DRUG besides a PRODRUG. INCREASES the effects and duration of effects.
It's why PEOPLE AVOID drinking lots of grapefruit juice - because it impairs CYP3A4 and can cause OVERDOSE.
https://www.pharmacy...ication-potency
And, you are incorrect. Caffeine is psychoactive WITHOUT metabolism.
Let's first discuss what Caffeine Metabolism MEANS!
Caffeine gets BROKEN DOWN by the CYP!A2 enzyme which converts 95% of said Caffeine into Theobromine, Theophylline and Paraxanthine and who knows what else. Which leaves you with only a tiny little fraction of Caffeine that does what you THINK it's doing to your brain. In other words, Caffeine metabolism is the BREAK DOWN of Caffeine into various other Metabolites which makes caffeine LESS EFFICACIOUS to the consumer!
Therefor someone whose CYP!A2 pathways are more activated are going to break down Caffeine a fuck ton more than someone who's CYP!A2 is not, which means that the vast majority of that Caffeine being consumed is useless to their brains anyway and why are they even drinking it to begin with?
So if we are calling "caffeine Metabolism" the break down and lack of effectiveness of Caffeine availability on the brain then sure, you can ride home with that medal. But it doesn't mean a person is better at using Caffeine, it means their enzymes are ridding them of having to use it to begin with since less than 5% of it gets to the brain anyway!
So people with a less active CYP1A2 are actually BETTER at using the caffeine, because they have nothing breaking it down nearly as much.
Yes, I am being a bit of a dick right now, because I am sick of the whole tough guy Caffeine mentality. The singular reason you can drink more without it causing "sensitivity" is merely because you don't have to deal with the actual caffeine itself because your body doesn't let you!
This also applies to A2 receptor polymorphisms which are genetic in origin. People with this particular receptor polymorphism are BETTER at taking in caffeine than those who DON'T have this polymorphism, which means they are SENSITIVE to it because their A2 Receptor likes it better than someone who doesn't have the Polymorphism!
So these incredible Hulk coffee drinkers out there who think they're gods gift to tolerance are full of shit. They don't HAVE TO tolerate it due to the genes being shut off (receptor site polymorphism)!
Edited by TheFountain, 07 February 2022 - 09:25 PM.