Mementine Namenda
The 72 hour dissociative
this is the transcript of the above
Introduction to Namenda
Memantine, sold under the brand name Namenda, is a unique and deeply underutilized medication. Currently, it’s approved for Alzheimer’s disease and dementia, but it also has off-label applications for ADHD, anxiety, pain, addiction, and depression. There’s a real need for anxiolytics with mechanisms distinct from benzodiazepines or SSRIs.
Mechanism of Action
Memantine is an NMDA receptor antagonist, like ketamine and other dissociatives, but it’s been studied and optimized for long-term chronic use. It works by blocking or dampening sensory information, allowing your brain to deprioritize distractions and exert greater control over attention and focus.
Benefits and Applications
I became interested in memantine because it can improve long-term planning, self-regulation, impulse control, and executive function. As an NMDA receptor antagonist, it also modulates monoamine and other neurotransmitter systems. Notably, it can prevent or even reverse tolerance buildup to other drugs; for example, when co-administered with amphetamines, it slows tolerance development, and in animal studies, it reduces methamphetamine-induced neurotoxicity. This mechanism underlies its efficacy in Alzheimer’s and dementia, where it suppresses excessive glutamatergic excitatory signaling by competitively antagonizing NMDA receptors.
Unlike uncompetitive antagonists like ketamine, which exert a heavy-handed block, memantine offers a more dynamic, mild, and sustained effect, with a duration of 12–36 hours. Mild dissociative effects come on slowly and fade gently. Memantine is versatile, well-tolerated, low in abuse potential, and effective across various contexts, including studying. It pairs particularly well with stimulants like Vyvanse.
Most side effects in clinical trials were mild and rarely led to dropout, and memantine is approved for children as young as six for ADHD, reflecting its strong safety profile.
Side Effects and Safety
One common side effect is mild confusion, reminiscent of cannabis, at onset. This is because memantine is also a nicotinic acetylcholine antagonist, but the body upregulates those receptors within 24–72 hours, and the confusion subsides.
Dosage and Usage
If you’re sensitive, start at 3–5 mg and increase gradually up to what works best for you. It’s FDA-approved up to 20–30 mg per day, split dosing. On neurotropic forums, some users go up to 40–60 mg for anxiety or to balance stimulant effects.
Recreational Use and Effects
In exploratory contexts, doses can range from 80 to 200 mg, producing psychedelic-like dissociation similar to ketamine or DCK, with introspective, emotionally gripping experiences.
I moderate a subreddit to collect these experiences. check it out
Memantine: The Unknown Dissociative
Comparisons with Other Drugs
Compared to other dissociatives, memantine feels sterile and clear-headed, without serotonergic warmth or strong sedation. Its long duration (15–36 hours) and dynamic antagonism allow natural NMDA agonists to displace it when needed, making the dissociation manageable.
Long-Term Use and Approvals
Memantine is approved for extended use, even in young children, and is intended to be in the system continuously.
Additional Information and Research
Memantine also antagonizes 5-HT₃ receptors, reducing nausea from psychedelics and empathogens, similar to ondansetron. 5-HT₃ antagonism may enhance dopamine release, contributing to stimulant-like effects. Combining memantine with SSRIs has shown enhanced efficacy, likely due to both 5-HT₃ antagonism and NMDA antagonism facilitating monoamine release. While memantine has mild effects on norepinephrine, it may weakly inhibit dopamine reuptake.
Its chemical cousin, amantadine, is a weaker NMDA antagonist but a dopaminergic releasing agent and reuptake inhibitor, used for Parkinson’s and fatigue. Unlike stimulants, amantadine offers a side-effect-free increase in drive, similar to memantine, which doesn’t interfere with sleep even at higher doses.
Memantine has been called an anti-ruminative agent: it inhibits excessive self-awareness and promotes flow, allowing you to plan and then calmly observe execution. At high doses, it can create an observer effect, fostering retrospection and pairing well with psychedelics by stripping away noise.
It’s been investigated for autism spectrum disorders, showing some efficacy and improving social stimulation.
more information
Aljuwaiser M, Alayadhi N, Ozidu V, Shafik Zakhari SA, Rushdy R, Naguy A. Clinical Indications of Memantine in Psychiatry-Science or Art? Psychopharmacol Bull. 2023 Feb 28;53(1):30-38. PMID: 36873917; PMCID: PMC9981340.
“use of memantine off-label in psychiatry is on the rise addressing a multitude of disorders. Suffice to mention autism; catatonia; OCD; bipolar mood disorder; treatment-resistant schizophrenia; ADHD; binge-eating disorder; PTSD; substance use disorder; pathological gambling; and generalized anxiety disorder, just to name few.’’
Sound evidence supports use of memantine for major neuro-cognitive disorder obsessive-compulsive disorder, treatment-resistant schizophrenia, and, ADHD. Modicum evidence supports use of memantine for PTSD, GAD and pathological gambling. Less compelling evidence is present for use in catatonia. No evidence supports use for core symptoms of autism spectrum disorder.