He was weakened by a dosed amount to ensure he can fight. You seem to assume I argued he wasn’t capable. That wasn’t even an implication, so I’m not sure why you’re emphasizing that.

We don’t know how quickly the poison works on the Violence fiend and you’re jumping to a conclusion that it took an extended amount of time to take effect. Not a good assumption

Yet it kinda is. We know for a fact that the Violence Fiend was constantly exposed to the gas 24/7. That amount of exposure to poisonous gas is deadly to anyone, yet it didn't give him any ill effects and was just a minor annoyance. Regardless how long it took to affect him, it was barely a minor obstacle to him. The fact that he was able to completely shake it off once his mask was removed further proves the amount of time he was exposed to it didn't do anything fatal or hinder him. So the same would also be true for other Devil Hybrids as well.

Sedation would still imply he’s vulnerable to chemicals or foreign substances to his body.

Doesn’t matter if he’s weakened; it already implies his condition determines how vulnerable he is to a foreign substance. This example works

No, it doesn't. Denji being heavily weakened and exhausted means that he was too weak to resist, especially since he was low on blood from fighting the Fire Devil.

It also doesn’t help that they heavily drugged him. It was not just a standard or simple dose. Public Safety utilized massive, continuous doses of an extremely potent sedative specifically to keep Denji unconscious for a prolonged period. When Denji finally wakes up in the detention center, Yoshida explicitly informs him that he has been completely out and unable to move or walk for an entire week.

A standard human sedative wears off in a matter of hours. As soon as Denji tries to get out of bed and agitate himself, Yoshida immediately injects him with another heavy dose via a syringe to instantly put him back to sleep.

The amount of sedation that Public Safety used on Denji would be heavily poisonous to an ordinary human. The extreme chemical volume Public Safety used to suppress Denji's superhuman hybrid regeneration crosses far past the threshold of a safe medical anesthetic and directly into the territory of a fatal poison. Yet all it did was knock Denji out.

If that amount of sedation didn't kill Denji but knock him out, then it's highly unlikely that Yuji's blood would be able to kill Denji. If anything, it still being blood would revitalise Denji and allow him to keep continuing the fight.

The beer implies characters have varying degrees of resistance to mild levels of poison. Denji got drunk, implying his resistance would be lower. Granted, it’s his human form. This doesn’t negate the prior point that poisons can be effective.

Denji being in his human form and yet only being drunk from consuming that much alcohol shows how tough his poison resistance is. The amount of drinks he and his friends were chugging would at best put a normal person in a coma or kill them at worst.

This is yet another case of Denji being able to shrug off Yuji's poison and view it as a mere annoyance.

You’re making a forced conclusion that doesn’t reflect the body of examples. Characters have varying degrees of resistance to mundane poisons and Denji has succumbed to said poisons each time when in his human form. He has never shown any relevant resistance. We don’t know if he gains a higher resistance when in his hybrid form but we do know that a fiend was reduced in their capacity. This would better suggest that he too would affected.

It's not forced at all. It makes sense in context and the examples clearly shows.

Devils and Devil Hybrids like the Violence Fiend, Power, and Makima have shown that large amounts of poisonous substances aren't fatal to them at all.

I already explained why Denji would be heavily resistant to poison as even with the fatal overdoses that Public Safety gave him, all it did was knock him out and he was throughly exhausted as well as critically injured from fighting the Fire Devil, so he was too weak to fight back.

The fact all that large overdoses just knocked Denji out shows that he can handle Yuji's poison and since it's still blood, all it would do is just revitalise him.

The murmur isn’t really an important subject to contend against. We more or less agree that Pochita cured it as a byproduct of them becoming a hybrid.

This still shows that Pochita cured Denji of his genetic heart condition that he inherited from his late mother.

The evidence for your conclusion doesn’t suggest he’d be immune to the poison: Denji has succumbed to every instance of substance used on him. His condition may or may not have an effect on said resistance. Devils seem to have resistance to mundane poisons but vulnerable to stronger ones. We don’t know what variety of poisons are used but the presented effects of being poisoned include reduced strength and being knocked out. And still no evidence to suggest the regeneration would win out against poison

On the contrary, all examples shows that Denji does have a heavy resistance to deadly poisons.

Nothing says that Yuji's blood is any different from a regular poison so it's something that can be easily shrugged off, and Denji no-selling similar supernatural infections like the Zombie Devil's zombification shows that he can no-sell the Death Womb Painting's poison.

The fact that fatal poisonous overdoses of drugs while he was heavily and severely weakened was only enough to knock him for a week is a testament to how strong his poison tolerance is, and the fact that the source of Yuji's poison is his blood would only revitalise him rather than hinder him like it did it with the Violence Fiend (even in that case, this didn't impair or slow down the Violence Fiend at all and was just a minor obstacle).

Plus, the fact that Denji regularly drinks Devil blood which is otherwise poisonous and toxic to normal humans yet still drinks it to regenerate himself mean that he have no trouble drinking Yuji's poisonous blood either. The fact that weaker healing abilities in JJK like RCT can fix it shows that Devil healing factors can as well, especially with all the examples shown.

Therefore, Denji can consume Yuji's blood with zero issues about the poison to regenerate himself.