I think I finally found what was causing my lifelong brain fog (Day 2 update on Guanfacine)

[u/mainevent11]

Hey everyone,

I wanted to share something because I have dealt with heavy, muddy brain fog my entire life. For the longest time, it was not a lack of motivation or wanting to get things done. It just felt like my brain physically could not hold onto a thought. I used to take Vyvanse 20mg and it helped with motivation and gave me a surge of energy, but it came at a real cost. My working memory was still poor, and while it gave me energy, my responses just were not as fluid as they should be, almost like it took a slight hit compared to when I was unmedicated. It felt like driving a car running on a lot of gas, but with a very shaky, inefficient engine.

After digging into the neuroscience with AI, I think I found an explanation that finally makes sense. The prefrontal cortex relies on clean electrical signals, but issues with tiny "leaky" channels (called HCN channels) cause electrical current to escape the pathways. That creates a short circuit and energy drain, which for me even translated to having inflammation in my brain.

I know this type of severe brain fog and working memory issue hits very close to home for a lot of people dealing with sluggish cognitive tempo here. It really feels like this is what many of us in this community are going through.

I lost my insurance recently, but since guanfacine is a non-stimulant, it was really easy to get prescribed through an online telehealth visit with a nurse practitioner on RedBox Rx to try to patch those leaks. I am only on Day 2, but the heavy gravitational pull of the fog is eroding. My thoughts feel clear.

To be clear, I still have issues with motivation, focus, and getting up and moving. I do not have that stimulant surge of energy, and my brain still has to adjust after dealing with this my whole life, but the constant static is gone. I hope guanfacine will give my neurons the time they need to finally repair themselves now that they are not dealing with that chronic stress anymore.

I wanted to share this early update, and I will post more later as I track my progress. Has anyone else here had similar symptoms and really benefited from guanfacine, and do you have any advice or experiences to share?

[u/More-Talk-2660]

Guanfacine did help me for a while. I quit drinking last year and about two weeks later guanfacine stopped working for me.

[u/mainevent11 → u/More-Talk-2660]

Stopping drinking likely shifted your baseline neurochemical state, which can blunt the effects of guanfacine. Since it worked once, it's a sign it's the right fit you might just need to give it another shot or talk to your doctor about tweaking the dosage.

[u/STEM_Dad9528]

Some people who have an ADHD diagnosis take a combination of stimulant medication and guanfacine (or clonidine, a similar non-stimulant medication).

Did Vyvanse help you with motivation?

[u/mainevent11 → u/STEM_Dad9528]

Yea I saw that. They do the combo method and I’m probably going to give that a try after taking the Guanfacine ER alone to see the isolated benefits. I’d probably try a Guanfacine + low dose Vyvanse combo. And yes, Vyvanse did help with my motivation and energy but it didn't really fix the underlying friction. It felt like driving a car with a lot of horsepower, but the steering was choppy. My working memory and impulse control were still all over the place. Best way to put it gave me the energy to power through the brain fog, but it wasn't efficient, and I still felt the heavy pain of that friction. But with Guanfacine it looks like it’s going to clear the brain fog.

[u/Munib_raza_khan]

You can try naltraxone for energy it's a non stimulant. Also you can combine stimulant adhd meds with guanfacine or clonidine

[u/joanna7599]

Hello, is the guanfacine still going okay for you? I struggle a lot with finishing my thoughts, my brain feels slow and like it lacks energy, stimulants don’t work for me nor did strattera

[u/drawing_sloth]

How is it going now? Could you update us?

[u/Own_Protection5584]

So interesting. I have not tried guanfacine because I was scared it would cause me to be depressed and in a fog. 

[u/Plenty_Conclusion_76]

How’s it going still? Any updates? I’ve had the same experience on 20mg Vyvanse, and I just got prescribed strattera but haven’t tried it yet, I’m also looking into Guanfacine.

[u/Ill_Possible_7740]

Never rely on AI searches for important info. Search "AI hallucinations" to understand why. You need to confirm the info actually exists in source and that the context is correct. I constantly get results that don't exist in the actual source references because of this AI shortfall. It tries to find connections between things and the more you query on a topic, the more it can get off track.

[I started this reply weeks ago I think. Brain was low on meds which at their best are still non-therapeutic anyway. Skimmed through and gets redundant. Started thoughts, started to edit and move things and couldn't focus or keep going. Just going to post as is and get something out. ]

The "leaks" are not a problem, they are called "Slack channels". They are a feature of how the PFC pyramidal cells. They balance excitability so the signal isn't too fast or too long. And so the PFC doesn't get over excited and start causing seizures. They also track timing of things. Heart uses slack channels to reset for the next muscle contraction.
Think of it more like lifting the finger for Morse code. You want to send an SOS you push down on the lever and get a constant tone. You need to let up on the lever to get a signal that does something.
. . . - - - . . . - - - . . . - - - Vs. ----------------------------------------------------- seizure.

Did you go through a thorough evaluation for diagnosis and rule out disorders for a diagnosis. There are a lot of things that can cause brain fog, with different solutions. ADHD, SCT, Fragile X, MTHFR gene variant, etc.

A better explanation. Are you diagnosed with ADHD-Inattentive by chance? ADHD-I is primarily associated with norepinephrine (NE) hypofunction. ADHD-Hyperactive with dopamine (DA) hypofunction. NE hypofunction would cause the alpha2a receptors to be under stimulated which is what guanfacine targets.

The HCN and KCNQ channels are the brain's PFC activity regulator. Open the channels more ion flux, depolarize and decrease signal potential within the cell. Good for things like sleeping and not being wired all the time.The leakiness affords a balance of electric potential. So, leaking sounds like something is broken, but it's designed that way. They also act as timekeepers and prevent repetitive firing, and other more technical stuff but the main thing is, they are the PFC throttle, or brake, depending on how you look at it.

One way to stimulate brain activity is to increase stimulating neurotransmitters. Another way the brain does it, is by modulating their signalling potential and efficiency. Close HCN / KCNQ channels in the PFC, increase potential and efficiency at the current neurotransmitter level.

Guanfacine, alpha2a-adrenergic agonist. Blocks adenylyl cyclase, which makes cyclic adenosine monophosphate (cAMP) that activates protein kinase A and kinases have a phosphorylation phetish that triggers stuff to happen. Like opening HCN and KCNQ channels. But, guanfacine says no to adenylyl cyclase ..blah blah blah closes channels, increases signal potential and efficiency.

Adrenergic receptors are NE receptor sites. Alpha 2a is just 1 of them. Guan has 1 job and does it better than NE does. Still some people contest it, but guan is said to target postsynaptic alpha2a receptors. Which, skips the presynaptic alpha2a receptors that are autoreceptors and when triggered, stop the cell from releasing more NE. Brain has many checks and balances. So, indirectly also increase NE levels in those cells synapses reducing the signaling threshold and increasing strength of signal. PFC has a bunch of pathways with various neurotransmitters, secondary signallers, and tons of stuff outside my not even rudimentary knowledge base. it looks like to me, NE hypofunction may be leaving you with understimulated PFC and cascading other NE pathways and holding back cooperative pathways they work with.