Are there any muscle relaxants that aren't anticholinergic?

Skelaxin (metaxalone): https://www.drugs.com/skelaxin.html

https://www.drugs.com/drug-class/skeletal-muscle-relaxants.html

Useful information:

Here’s a comprehensive list of Anticholinergic Drugs (allergy and sleep-aid medications). “AC” drugs have been linked to increased risk of Dementia related diseases like Alzheimer’s in several studies. This list is courtesy of The People’s Pharmacy.

RELATED: New Study Links Allergy Medicine And Alzheimer’s Disease

These AC drugs were included in Dr. Shelly Gray’s study at the University of Washington:

Amitriptyline (Elavil)
Atropine
Benztropine (Cogentin)
Chlorpheniramine (Actifed, Allergy & Congestion Relief, Chlor-Trimeton, Codeprex, Efidac-24 Chlorpheniramine, etc.)
Chlorpromazine (Thorazine)
Clomipramine (Anafranil)
Clozapine (Clozaril)
Cyclobenzaprine (Amrix, Fexmid, Flexeril)
Cyproheptadine (Periactin)
Desipramine (Norpramin)
Dexchlorpheniramine
Dicyclomine (Bentyl)
Diphenhydramine (Advil PM, Aleve PM, Bayer PM, Benadryl, Excedrin PM, Nytol, Simply Sleep, Sominex, Tylenol PM, Unisom, etc.)
Doxepin (Adapin, Silenor, Sinequan)
Fesoterodine (Toviaz)
Hydroxyzine (Atarax, Vistaril)
Hyoscyamine (Anaspaz, Levbid, Levsin, Levsinex, NuLev)
Imipramine (Tofranil)
Meclizine (Antivert, Bonine)
Nortriptyline (Pamelor)
Olanzapine (Zyprexa)
Orphenadrine (Norflex)
Oxybutynin (Ditropan, Oxytrol)
Paroxetine (Brisdelle, Paxil)
Perphenazine (Trilafon)
Prochlorperazine (Compazine)
Promethazine (Phenergan)
Protriptyline (Vivactil)
Pseudoephedrine HCl/Triprolidine HCl (Aprodine)
Scopolamine (Transderm Scop)
Thioridazine (Mellaril)
Tolterodine (Detrol)
Trifluoperazine (Stelazine)
Trimipramine (Surmontil)

RELATED: Asthma Study: Many Patients May Not Have Asthma

Other Anticholinergic Drugs (will lesser AC effect)

Here are some other AC drugs that may have ill effects on the brain, though they have a lesser “AC” effect than the above agents:

Alprazolam (Xanax)
Amantadine (Symmetrel)
Baclofen
Carisoprodol (Soma)
Cetirizine (Zyrtec)
Cimetidine (Tagamet)
Clorazepate (Tranxene)
Codeine
Colchicine
Digoxin (Lanoxicaps, Lanoxin)
Diphenoxylate (Lomotil)
Fluphenazine (Prolixin)
Furosemide (Lasix)
Hydrochlorothiazide (Esidrix, Dyazide, HydroDIURIL, Maxzide & literally scores of other medications for high blood pressure)
Loperamide (Imodium)
Loratadine (Alavert, Claritin)
Maprotiline
Nifedipine (Adalat, Procardia)
Ranitidine (Zantac)
Thiothixene (Navane)
Tizanidine (Zanaflex)