Doubleyolkeggs

John gets a second chance at life, going back to the time before "The Gate to Another World" appeared. Betrayed in his past life as a pharmacist, he decides he can't trust anyone anymore. So, he opts for a hidden profession, becoming a poison master disguised as a regular pharmacist to everyone else.
To the other awakened ones, John is just your run-of-the-mill potion maker. 
Little do they know, every healing potion he brews is laced with deadly poison.
"John, heal me quick... Fuck! John, what did you do to me? Why have I turned bald?"
"John!!Why did my penis turn into a mushroom after drinking your potion?"
"You guys dare to drink John's healing potions? I saw with my own eyes last time, he threw a bottle of his healing potion and it directly stank a Corrupt Lord to death!"
"And that's nothing! I saw a toxic serpent bite John, and guess what? The serpent got poisoned to death by him!"
John sneered at the collapsed crowd, "I've said it before, though my potions are free, they come with some minor side effects. Want to get rid of the side effects? That'll cost extra!"
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Supreme therapist：My healing potions can even poison the gods

Three swamp lizards burst out of the bushes in an instant, charging towards the two people inside the cave.

Seeing the monsters rushing over, Jill hid directly behind John, terrified: "Hey, I'm just your streaming assistant, okay? I'm not responsible for fighting, you... you have to protect me!"

Jill's voice was trembling. Although she was also an Awakener, she had no combat experience whatsoever.

Her plan had been to start streaming to earn some money first. Once the levels of other guild members increased, she planned to hire a few teams with money to help her level up.

If it weren't for John, she would never have entered the otherworld portal today.

"Of course you don't need to fight." John smiled lightly, a poisoned dagger suddenly appearing in his hand, and charged directly at the swamp lizards.

The leading swamp lizard roared deeply. Seeing John charging towards it, its tail swung, whipping like a steel whip towards John's abdomen.

A Genius Among Geniuses