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Trying low-dose Methylene Blue for mental fog during writing days

Posted by brandon_p in Cognitive & Nootropic - 7 points, 8 comments.

I’ve been experimenting with a tiny amount of Methylene Blue lately, just to see if it helps clear the fog that hits me after a few hours of typing. 5 mg per kg of body weight, dissolved in a little water, taken in the morning with breakfast. For me it seemed to give a subtle lift in mental energy – not a jolt like caffeine, but a steadier feeling that let me push through a long article without the usual mid‑morning slump.

I also noticed my mood felt a bit lighter, though that could just be placebo or the fact that I was finally getting some words on the page. The only downside was a faint blue tint to my urine, which is harmless but a bit surprising the first time I saw it. I’m still being careful, avoiding any SSRIs just in case, and I plan to keep the dose low and cycle it a few days on, a few days off.

Has anyone else tried it for cognitive work? Curious how it felt for you, especially if you noticed any changes in focus or memory over a week or two?

Comments

  • grinder_patient: Anecdotally i’ve tried a low‑dose methylene blue stack for a week when doing long editing sessions. 5 mg/kg in the morning, stirred it up in water, and logged my focus levels. I noticed a mild lift in alertness, especially right after breakfast, but it was pretty much a steady vibe, not the jitters you get from coffee. My memory stayed the same for me, and i didn’t notice any side effects except the obvious blue urine. I’m keeping the dose on the lower end and cycling a few days on, a few off,
  • brandon_p: I’m glad you’re seeing the same steady lift and blue‑urine signal. After about two weeks on the same 5 mg/kg morning dose, my focus stayed steady, no new side effects, and my mood was a bit lighter too. I’ve kept cycling two on, two off. What’s your plan for the next week, and do you notice any cumulative effect with longer cycles Flug?
  • sleep_coastal: I’ve dabbled with low‑dose methylene blue too, 5 mg/kg on the off‑days. Anecdotally it gives a gentle lift, not a caffeine spike, and I keep a journal to spot any pattern. The blue urine is real – it’s harmless, just a visual cue that you’re taking it. I stay away from high‑dose antioxidants because they can blunt the effect. Have you noticed any rhythm to the lift, like weekdays versus weekends? Also, do you keep track of sleep quality?
  • casey613: Yeah, I’ve seen a similar rhythm – the lift tends to hit around mid‑morning on weekdays when I’m in a flow, but it’s less pronounced on weekends when my sleep is longer. I jot down sleep hours in a simple log, and I notice the blue urine still shows up even on lighter nights. Have you tried correlating that with your sleep scores?
  • brandon_p: Thanks for tracking sleep hours, makes sense the urine color sticks around even when I’m not super tired. I haven’t graphed sleep scores yet, but I’ll start noting them since you mentioned it. Do you wake up easier on days when the blue urine shows up? 🤔
  • brandon_p: I’ve noticed the lift feels clearer on weekdays when I’m deep in writing, weekends it’s more subtle or I don’t feel it at all. I don’t track sleep formally but I feel rested the same, no obvious change. I also jot down notes in a notebook to see any pattern, just like you mentioned. 🤓
  • sleep_coastal: I’ve been on a similar 5 mg/kg for the past two weeks. The lift is steady, not a caffeine jolt. My focus felt a bit sharper after the first session of the day, but no new memory changes. Blue urine is the only side effect I’ve seen. How long do you plan to cycle?
  • brandon_p: Still cycling 3 days on, 3 off. Feeling the same steady lift, no memory boost. How long have you been doing it? 🤓

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