Baldur’s Gate 3: Help Omeluum Investigate the Parasite

Omeluum is a mind flayer who is fed up with his ruler and brethren and wants to help others infected with Mind Flayer parasite. In this guide, we will help you locate Omeluum and let him try to remove the parasite from your brain in BG3.

Once you have the Mind Flayer parasite inside your head in Baldur’s Gate 3, it’s difficult to get rid of it. While going through the Find a Cure questline to remove the tadpole from your head, you will come across Help Omeluum Investigate the Parasite side quest in Baldur’s Gate 3.

During the side quest, a disengaged Mind Flyer Omeluum will try to help you out by preparing a potion for you. Once he prepares the potion, you can drink it or refuse, but both choices will result in vastly different outcomes.

Did You Know

You will encounter Omeluum once more during Act 3. He is being kept as a prisoner in the Iron Throne Prison by Lord Gortash, and you can free him alongside Grand Duke Ravengard.

Help Omeluum investigate the Parasite quest walkthrough

To find Omeluum, first, visit the Myconid Colony in the Ebonlake Grotto of the Underdark region. Once you are there, you need to find Blurg, a Hobgoblin. He belongs to the Society of Brilliance and is a friend of Omeluum.

Omeluum is a Mind Flayer who has been disengaged from his race and wants to help people infected by other Mind Flayers. Upon telling Blurg about your tadpole problem, he will summon his friend Omeluum there as well.


One important thing to mention here is the behavior of the Myconids. If they are friendly, will Blurg only talk to you and summon Omeluum. Otherwise, he will turn hostile towards you.

After having a short conversation with Omeluum, he will try to help you out by establishing a connection with the parasite. However, this doesn’t come free of cost. He will ask you to find the Tongue of Madness and Timmask Spores from Arcane Tower so he can prepare a potion that will allow him to communicate with the Illithid parasite.

Arcane Tower location in Baldur’s Gate 3

Once you have talked to Omeluum, Blurg will guide you about the location from where you can find the items required. He will hint about Lenore’s Tower. According to Blurg, it is in the Southwestern part of the Underdark. Once you are at the Arcane Tower, be vigilant because the Arcane Turrets guard the tower’s entrance.


Arcane Tower will become visible but won’t be marked as an active quest marker on our map. Make sure to mark it for easier navigation.

You can use the potion of invisibility or the Greater Invisibility spell to pass the first turret on your way. You can also use hiding spots to avoid getting annihilated by the turrets. It’s better to disengage the party and use only one member, preferably Astarion. After climbing several stairs, turn right on a path leading downwards.

From here, start jumping on the big mushrooms. After reaching down, you will find a blue, glowing tree in the backyard to your right. This is a Sussur tree. Approach the tree and collect Sussur Bloom from it.

Once done, turn back and enter the door to your left in the backyard. Move forward until you find a big cylindrical structure in the middle of the chamber. It’s the Power Generator for the Arcane Tower. You need to power up the Arcane Tower by using the Sussur Bloom. It will light up the whole building and disable the turrets.

Right above the Power Generator, you will find a lift. Use the stairs beside the generator to reach it. Ascend using the lift, which will take you to a new floor.

Timmask Spores and Tongue of Madness location in Arcane Tower

Once you reach the upper floor of Arcane Tower using the lift, turn to the right side. Here, you will find a shelf beside a big mushroom near the door. From the shelf, you can collect the Timmask spores for Omeluum in Baldur’s Gate 3.

The next item on our agenda, the Tongue of Madness, is also available on the same floor. After getting out of the lift, you must turn to the left side. A few steps ahead, you will find the Tongue of Madness in the dark corner.

After collecting all the required items, you must return to the Myconid Colony to meet Omeluum. Escaping this area is not that easy. Make sure you have someone with the Misty Step spell, or you will lose some health making your way down from the tower.


You can also use the Feather Fall spell to make the descent safely or simply use Fast Travel if you haven’t disbanded your party.

Help Omeluum Investigate the Parasite quest consequences

Once back at the Myconid colony, give Timmask Spore and Tongue of Madness to Omeluum. He will now prepare a potion and ask you to drink the entire flask without leaving a single drop. It will involve passing many Wisdom and Intelligence checks. You can either drink the potion or flat-out refuse. Both these decisions will change how the quest ends. 

Being a Mind Flayer, it makes sense that you would be skeptical and wonder if you should trust Omeluum or not. But as mentioned before, he has cut ties with his race and is a “good” guy now. He works with the Society of Brilliance, so you can trust him. 

Both choices have their consequences.  

  • Drinking Omeluum’s potion will grow the parasite and its influence instead of curing you. Since the potion lowered your defenses, the parasite has now grown stronger. But to counter it, Omeluum will reward you with the Ring of Mind Shielding to limit the influence of the parasite. One thing to remember is that this ring will limit the parasite’s positive and negative influences. So, your Illithid Powers will be affected. 
  • However, rejecting Omeluum and refusing to drink the potion will not let the parasite grow. He will realize his mistake and offer the Ring of Mind Shielding if you can pay him. In short, you can only get the ring as a reward from Omeluum if you drink his brewed potion.

Ultimately, neither of the choices will cure you of the Mind Flayer parasite, so if you want the ring for free as a quest reward, we recommend drinking Omeluum’s potion.

Help Omeluum Investigate the Parasite quest bug

There are two bugs that we came across while going through Investigate the Parasite quest. If you interrupt Omeluum and Blurg during their conversation, there is a chance for the game to bug out. Make sure to create a quick save before this interaction and reload it. Restarting the game also helps.

The second bug is a bit more technical. If you refuse to drink Omeluum’s potion, send it to camp in Baldur’s Gate 3. This will prevent any problems, and you can easily finish the quest.

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Ali is a passionate RPG gamer. He believes that western RPGs still have a lot to learn from JRPGs. He is editor-in-chief at but that doesn't stop him from writing about his favorite video ...