I can't get rid of an infinite poison effect?

Question

So I was playing on one of my mod packs (1.12.2 if this helps), and had been bitten by a vampire and had turned, everything was normal until then. As in, when I turned I got an infinite poison effect, and I cannot get rid of it, at all. Milk buckets don't work neither does the /effect @p clear command. Even the /kill command does nothing, it just comes back. I have no clue how to get rid of it since this has never happened before and there is nothing about it anywhere I can find. I mean you can see how an infinite poison effect can be annoying when you are trying to play in survival.

Here's the list of mods if you need it

• Astikor Carts
• Baby Animals
• Backpack
• Baubles Mod
• Bewitchment Mod
• Biomes O Plenty
• Code Chicken Lib
• CoFH Core
• Craftable Saddles
• Fossils Archeology
• Just Enough Items
• LLibrary
• OptiFine
• Patchouli Mod
• Redstone Flux API
• Tree Chopper
• U Team Core
• Vampirism

Answer 1

Try dying naturally (without /kill) or getting out of sunlight (as you were bitten by a vampire).

As a last resort, if no other solution works, you'll have to delete your player data from the save. Be sure to put your items in a chest before doing this so that they're not lost forever.

1. Close your world if it is open
2. Open NBTExplorer
3. Navigate to your world folder
4. Delete the entry named as your UUID in playerdata.
5. Delete the default player entry in level.dat (level.dat/player)

Hope this helps!

Answer 2

If you are wearing any faction specific items that aren't for vampires, the effect won't go away until you take them off.

Answer 3

Make sure you're not wearing any obsidian armor from hell, it's poisonous to vampires.