Just a heads up: There are a lot of drugs that have been linked to neurodegeneration, which will hinder concussion recovery. And not just prescription drugs, even common over-the-counter drugs have negative side effects.
When taking any of these drugs, it's important to weigh the side effects against the benefits.

Dementia Linked To Benzodiazepines, Sleeping Pills, Anticholinergics - Mental Health Daily
List Of Drugs That Can Cause Dementia - Meds Safety
Drugs Linked to Dementia: The Complete Guide - GoodRx


Drug Classifications Linked To Dementia:

Opioid medications:
Morphine
Hydrocodone (Norco)
Hydromorphone (Dilaudid)
Fentanyl (Duragesic)

NSAID medications:
Naproxen (Aleve, Naprosyn)
Ibuprofen (Motrin, Advil)
Indomethacin (Indocin)

Benzodiazepines
Ativan (Lorazepam)
Klonopin (Clonazepam)
Valium (Diazepam)
Xanax (Alprazolam)

Sleeping pills (Z-drugs)
Ambien (Zolpidem)
Lunesta (Eszopiclone)
Sonata (Zaleplon)

Anticholinergics
Advil PM, Tylenol PM (Diphenhydramine)
Benadryl (Diphenhydramine)
Chlorphenamine
Dramamine (Meclizine)

Antidepressants Tricyclic Antidepressants (TCA)
amitriptyline (Elavil)
amoxapine
clomipramine (Anafranil)
desipramine (Norpramin)
doxepin (Sinequan)
imipramine (Tofranil)
maprotiline
nortriptyline (Pamelor)
protriptyline (Vivactil)
trimipramine (Surmontil)

Antidepressants Selective Serotonin Reuptake Inhibitors
Citalopram (Celexa)
Escitalopram (Lexapro)
Fluoxetine (Prozac, Sarafem)
Fluvoxamine (Luvox)
Paroxetine (Paxil)
Sertraline (Zoloft)

Antidepressants Serotonin Norepinephrine Reuptake Inhibitors
duloxetine (Cymbalta)
venlafaxine (Effexor)
desvenlafaxine (Pristiq)

Antidepressants Monoamine oxidase inhibitors
phenelzine (Nardil)
tranylcypromine (Parnate)
isocarboxazid (Marplan)
selegiline (EMSAM, Eldepryl)

Other Antidepressants
Mirtazapine (Remeron)
Desyrel (trazodone)
Bupropion (Wellbutrin)
nefazodone (Serzone)

Antiparkinson drugs
amantadine
Apokyn
apomorphine
bromocriptine
Cycloset
Gocovri
Kynmobi
Mirapex
Mirapex ER
Neupro
Osmolex ER
Parlodel
pramipexole
Requip
Requip XL
ropinirole
rotigotine

Antipsychotics
aripiprazole (Abilify)
asenapine (Saphris)
cariprazine (Vraylar)
clozapine (Clozaril)
lurasidone (Latuda)
olanzapine (Zyprexa)
quetiapine (Seroquel)
risperidone (Risperdal)
ziprasidone (Geodon)

Antimuscarinics
Oxybutynin
Tolterodine
Propiverine
Darifenacin
Solifenacin
Trospium
Fesoterodine

Antiepileptic drugs
Phenobarbital (many brand names)
Lamotrigine (lamictal)
Carbamazepine (tegretol)
Topiramate (topamax)
Oxcarbazepine (trileptal)
Zonisamide (zonegran)
Gabapentin (neurontin)
Levetiracetam (keppra)

Antihistamines
Brompheniramine (Dimetane)
Cetirizine (Zyrtec)
Chlorpheniramine (Chlor-Trimeton)
Clemastine (Tavist)
Diphenhydramine (Benadryl)
Fexofenadine (Allegra)
Loratadine (Alavert, Claritin)

Gastrointestinal antispasmodics
atropine
belladonna
dicyclomine (Bentyl)
hyoscyamine (Levsin) (This drug is no longer available in the US)
loperamide (Imodium)
promethazine (Phenergan)

Skeletal Muscle Relaxants
Amrix
arbaclofen
baclofen
carisoprodol
chlorzoxazone
cyclobenzaprine
Dantrium
dantrolene
Diastat
Diastat AcuDial
diazepam
Fexmid
Flexeril
Gablofen
Lioresal
Lorzone
metaxalone
methocarbamol
Norflex
Ontinua ER
orphenadrine
Ozobax
Parafon Forte DSC
Revonto
Robaxin
Ryanodex
Skelaxin
Soma
Valium

Antimuscarinic bronchodilators
Tiotropium (Spiriva)
Umeclidinium (Incruse Ellipta)
Aclidinium (Tudorza Pressair)
Ipratropium (Atrovent)
Revefenacin (Yupelri)
Glycopyrrolate (Seebri Neohaler, Lonhala Magnair)
Antiarrhythmics
Amiodarone (Cordarone, Pacerone)
Flecainide (Tambocor)
Ibutilide (Corvert)
Lidocaine (Xylocaine)
Procainamide (Procan, Procanbid)
Propafenone (Rythmol)
Quinidine (many brand names)
Tocainide (Tonocarid)

Irritable bowel syndrome medications:
Hyoscyamine (Levsin)
Dicyclomine (Bentyl)

Overactive bladder medications:
Darifenacin ER (Enablex)
Oxybutynin (Ditropan)
Tolterodine (Detrol, Detrol LA)
Trospium (Sanctura)
Solifenacin (Vesicare)
Fesoterodine (Toviaz)