Question explored with the scientific record
List studies of DMSO for neurological desease, disorder
DMSO has been tested in a handful of neurological conditions, and the results are thin, mixed, and mostly from small or uncontrolled studies.
The neurological evidence in this retrieval is one small pilot trial of a DMSO plus fructose 1,6-diphosphate mixture (PHA-56) in elderly ischemic stroke patients [10]. It was preliminary, not placebo-controlled in a clean way, and reported neurologic recovery in some patients, with timing of treatment seeming to matter [10]. That is a signal, not proof. A separate rat study found intravesical DMSO suppressed spinal nerve firing from bladder distension, which is a pain mechanism, not a neurological disease treatment [6]. The rest of the DMSO records are off-target for neurology: bladder pain [3][4][5], osteoarthritis [7][9], rheumatic disease [8], infection [2], and cell toxicity [1].
| Condition | Study type | What it showed |
|---|---|---|
| Ischemic stroke (elderly) | Preliminary pilot, DMSO+FDP [10] | Some improved, timing mattered |
| Bladder pain (nerve firing) | Rat spinal recording [6] | 50% DMSO cut evoked activity to 24% of baseline |
| General cell safety | Review, lab cells [1] | DMSO is cytotoxic at low concentrations |
The safety picture matters. A 2024 review found DMSO reduced viability and increased cell death in human stem cells at concentrations as low as 0.01% [1]. That is a solvent that crosses into tissue, not an inert carrier.
This retrieval cannot see the wider DMSO neurology literature, including any stroke, spinal cord, or traumatic brain injury trials that exist outside these searches. What surfaced is one pilot and one animal pain study. That is not a basis for treating a neurological disease.
My call: the evidence here does not support DMSO for any neurological disease, and the one human trial is too small and too preliminary to act on. Confidence: low.
Sources used 10
-
CONSIDERING DIMETHYL SULFOXIDE SOLVENT TOXICITY TO MAMMALIAN CELLS AND ITS BIOLOGICAL EFFECTS
This review reports that dimethyl sulfoxide (DMSO) exerts concentration- and time-dependent cytotoxic, molecular, and functional effects on normal and cancerous mammalian cells, and can alter the activity of dissolved drugs such as cisplatin.
DOI: 10.15407/exp-oncology.2024.02.174 -
Potential Use of Dimethyl Sulfoxide in Treatment of Infections Caused by Pseudomonas aeruginosa
The study shows that non-inhibitory concentrations of dimethyl sulfoxide (DMSO) suppress quorum-sensing–regulated virulence factors in Pseudomonas aeruginosa by lowering C4-HSL production, reducing pyocyanin, rhamnolipids, elastase, and biofilm formation, with in vivo evidence o…
DOI: 10.1128/AAC.01357-16 -
A randomized, open‐label, multicenter study of the efficacy and safety of intravesical hyaluronic acid and chondroitin sulfate versus dimethyl sulfoxide in women with bladder pain syndrome/interstitial cystitis
In a phase III randomized multicenter trial in 110 women with bladder pain syndrome/interstitial cystitis, intravesical hyaluronic acid plus chondroitin sulfate (Ialuril) was compared with dimethyl sulfoxide (DMSO); HA/CS achieved similar pain reduction with a more favorable saf…
DOI: 10.1002/nau.23091 -
Dimethyl sulfoxide (DMSO) as intravesical therapy for interstitial cystitis/bladder pain syndrome: A review
This review evaluates the efficacy and application of dimethyl sulfoxide (DMSO) as an intravesical therapy for interstitial cystitis/bladder pain syndrome, highlighting variable response rates and the need for standardized treatment protocols.
DOI: 10.1002/nau.23204 -
Intravesical treatments for painful bladder syndrome/ interstitial cystitis
This study evaluates the effectiveness of various intravesical treatments for Painful Bladder Syndrome/Interstitial Cystitis (PBS/IC), finding that while some treatments like Bacillus Calmette-Guerin (BCG) show potential benefits, overall evidence remains inconclusive and highli…
DOI: 10.1002/14651858.cd006113.pub2 -
Spinal neurophysiologic correlates of the analgesic actions of intravesical dimethyl sulfoxide and capsaicin in the rat
This study investigates the neurophysiologic effects of intravesical dimethyl sulfoxide (DMSO) and capsaicin on spinal neuronal responses to urinary bladder distension in female Sprague-Dawley rats, demonstrating significant inhibition of neuronal activity following treatment.
DOI: 10.1054/jpai.2002.126789 -
EVALUATING THE EFFECTIVENESS OF PHONOPHORESIS BY PIROXICAM AND DIMETHYL SULFOXIDE FOR WOMEN’S WITH OSTEOARTHRITIS KNEE JOINT
Phonophoresis with piroxicam reduced knee osteoarthritis pain more than DMSO phonophoresis or conventional ultrasound in a double-blind randomized trial of 50 women, with reported VAS reductions of 70%, 65%, and 50%.
DOI: 10.22159/ajpcr.2018.v11i6.24615 -
CONTROL TRIALS OF DIMETHYL SULFOXIDE IN RHEUMATOID AND COLLAGEN DISEASES
This study reports on control trials of Dimethyl Sulfoxide (DMSO) in 199 patients with various rheumatic diseases, demonstrating its effectiveness in reducing symptoms and improving joint function.
DOI: 10.1111/j.1749-6632.1983.tb47312.x -
Diclofenac Sodium Topical Solution 1.5% w/w with Dimethyl Sulfoxide Compared with Placebo for the Treatment of Osteoarthritis: Pooled Safety Results
This study presents pooled safety results from seven randomized controlled trials involving 1252 patients, demonstrating that diclofenac sodium topical solution 1.5% w/w with dimethyl sulfoxide is well tolerated and offers a safer alternative to oral NSAIDs for managing osteoart…
DOI: 10.3810/pgm.2011.11.2507 -
Ischemic stroke in elderly patients treated with a free radical scavenger–glycolytic intermediate solution: A preliminary pilot trial
This preliminary pilot trial investigates the safety and efficacy of a combination of dimethyl sulfoxide (DMSO) and fructose 1,6-diphosphate (FDP) in treating ischemic stroke in elderly patients, showing promising results in neurologic recovery and tolerability.
DOI: 10.1179/016164102101199567