Sodium channel blocker

Short description: Several medications which disrupt the movement of Na+ ions

Sodium channel blockers are drugs which impair the conduction of sodium ions (Na+) through sodium channels.[1]

## Contents

* 1 Extracellular
* 2 Intracellular
* 3 Unknown mechanism
* 4 Antiarrhythmic
* 4.1 Class Ia agents
* 4.2 Class Ib agents
* 4.3 Class Ic agents
* 5 Other uses
* 6 Future prospects
* 7 See also
* 8 References

## Extracellular

The following naturally-produced substances block sodium channels by binding to and occluding the extracellular pore opening of the channel:

* Alkaloids:
* Saxitoxin (STX)
* Neosaxitoxin (NSTX)
* Tetrodotoxin (TTX)

## Intracellular

Drugs which block sodium channels by blocking from the intracellular side of the channel include:

* Local anesthetics: lidocaine
* Class I antiarrhythmic agents
* Various anticonvulsants: phenytoin, oxcarbazepine (derivative of carbamazepine)

## Unknown mechanism

* Calcium has been shown to block sodium channels[2] which explains the effects of hypercalcemia and hypocalcemia.
* Lamotrigine is known to block sodium channels but it is not known whether it is extracellular or intracellular.
* Cannabidiol (CBD) has been shown to cause inhibitory effects on sodium currents. This voltage-dependent inhibition is non-selective in nature. The current literature suggests that cannabidiol inhibits sodium currents primarily through altering the biophysical properties of cell membrane, promoting the inactivated conformation of sodium channels.[3]
* Other nonpsychotomimetic phytocannabinoids, including cannabigerol (CBG) and cannabinol (CBN), have also been shown to inhibit the nociceptor sodium channel Nav1.8, supporting a potential peripheral analgesic mechanism.[4]

## Antiarrhythmic

Sodium channel blockers are used in the treatment of cardiac arrhythmia. They are classified as "Type I" in the Vaughan Williams classification.

Class I antiarrhythmic agents interfere with the (Na+) channel. Class I agents are grouped by their effect on the Na+ channel, and by their effect on cardiac action potentials. Class I agents are called Membrane Stabilizing Agents. 'Stabilizing' refers to the decrease of excitogenicity of the plasma membrane affected by these agents. A few class II agents, propranolol for example, also have a membrane stabilizing effect.

### Class Ia agents

Class Ia agent decreasing Vmax, thereby increasing action potential duration.

Class Ia agents block the fast sodium channel, which depresses the phase 0 depolarization (i.e. reduces Vmax), which prolongs the action potential duration by slowing conduction. Agents in this class also cause decreased conductivity and increased refractoriness.

Indications for Class Ia agents are supraventricular tachycardia, ventricular tachycardia, symptomatic ventricular premature beats, and prevention of ventricular fibrillation.

Procainamide can be used to treat atrial fibrillation in the setting of Wolff–Parkinson–White syndrome, and to treat wide complex hemodynamically stable tachycardias. Oral procainamide is no longer being manufactured in the US, but intravenous formulations are still available.

While procainamide and quinidine may be used in the conversion of atrial fibrillation to normal sinus rhythm, they should only be used in conjunction with an AV node blocking agent such as digoxin or verapamil, or a beta blocker, because procainamide and quinidine can increase the conduction through the AV node and may cause 1:1 conduction of atrial fibrillation, causing an increase in the ventricular rate.

Class Ia agents include quinidine, procainamide and disopyramide.

### Class Ib agents

Effect of class Ib antiarrhythmic agents on the cardiac action potential.

Class Ib antiarrhythmic agents are sodium channel blockers. They have fast onset and offset kinetics, meaning that they have little or no effect at slower heart rates, and more effects at faster heart rates. Class Ib agents shorten the action potential duration and reduce refractoriness. These agents will decrease Vmax in partially depolarized cells with fast response action potentials. They either do not change the action potential duration, or they may decrease the action potential duration. Class Ib drugs tend to be more specific for voltage gated Na channels than Ia. Lidocaine in particular is highly frequency dependent, in that it has more activity with increasing heart rates. This is because lidocaine selectively blocks Na channels in their open and inactive states and has little binding capability in the resting state.

Class Ib agents are indicated for the treatment of ventricular tachycardia and symptomatic premature ventricular beats, and prevention of ventricular fibrillation.

Class Ib agents include lidocaine, mexiletine, tocainide, and phenytoin.

### Class Ic agents

Effect of class Ic antiarrhythmic agent on cardiac action potential.

Class Ic antiarrhythmic agents markedly depress the phase 0 depolarization (decreasing Vmax). They decrease conductivity, but have a minimal effect on the action potential duration. Of the sodium channel blocking antiarrhythmic agents (the class I antiarrhythmic agents), the class Ic agents have the most potent sodium channel blocking effects.

Class Ic agents are indicated for supraventricular arrhythmias (i.e. atrial fibrillation) and as a last line treatment for refractory life-threatening ventricular tachycardia or ventricular fibrillation.[5] These agents are potentially pro-arrhythmic, especially in settings of structural heart disease (e.g. post-myocardial infarction), and are contraindicated in such settings.

Class Ic agents include encainide, flecainide, moricizine, and propafenone. Encainide is not available in the United States.

## Other uses

Sodium channel blockers are also used as local anesthetics and anticonvulsants.[6]

Sodium channel blockers have been proposed for use in the treatment of cystic fibrosis,[7] but current evidence is mixed.[8]

It has been suggested that the analgesic effects of some antidepressants may be mediated in part via sodium channel blockade.[9]

Voltage-gated sodium channel blockers are used as insecticides, comprising Insecticide Resistance Action Committee (IRAC) mechanism of action group 22. As of March 2020[update] these are two, indoxacarb (22A, the oxadiazines) and metaflumizone (22B, the semicarbazones).[10]

## Future prospects

Selective blockers of Nav1.7 and Nav1.8 voltage-gated sodium channels, such as CNV1014802 and Funapide, are being investigated as novel analgesics.[11][12][13]

## See also

* Sodium channel opener

## References

1. ↑ Sodium+Channel+Blockers at the US National Library of Medicine Medical Subject Headings (MeSH)
2. ↑ "Calcium block of Na+ channels and its effect on closing rate". Proceedings of the National Academy of Sciences of the United States of America 96 (7): 4154–4157. 1999. doi:10.1073/pnas.96.7.4154. PMID 10097179. Bibcode: 1999PNAS...96.4154A.
3. ↑ "Inhibitory effects of cannabidiol on voltage-dependent sodium currents". Journal of Biological Chemistry 293 (43): 16546–16558. September 2018. doi:10.1074/jbc.RA118.004929. PMID 30219789.
4. ↑ "Nav1.8, an analgesic target for nonpsychotomimetic phytocannabinoids". Proceedings of the National Academy of Sciences of the United States of America 122 (4). 2025. doi:10.1073/pnas.2416886122. PMID 39835903. Bibcode: 2025PNAS..12216886G.
5. ↑ "Ventricular Tachycardia Medication: Antiarrhythmics, Class IC". http://emedicine.medscape.com/article/159075-medication#4.
6. ↑ "Voltage-gated sodium channel blockers; target validation and therapeutic potential". Curr Top Med Chem 5 (6): 529–37. 2005. doi:10.2174/1568026054367584. PMID 16022675.
7. ↑ "Pharmacological properties of N-(3,5-diamino-6-chloropyrazine-2-carbonyl)-N'-4-[4-(2,3-dihydroxypropoxy)phenyl]butyl-guanidine methanesulfonate (552-02), a novel epithelial sodium channel blocker with potential clinical efficacy for cystic fibrosis lung disease". J. Pharmacol. Exp. Ther. 325 (1): 77–88. April 2008. doi:10.1124/jpet.107.130443. PMID 18218832.
8. ↑ Burrows, Elinor F.; Southern, Kevin W.; Noone, Peadar G. (2014). "Sodium channel blockers for cystic fibrosis". Cochrane Database of Systematic Reviews 2014 (4). doi:10.1002/14651858.CD005087.pub4. PMID 24715704. PMC 6544779. http://www.cochrane.org/reviews/en/ab005087.html.
9. ↑ "Sodium channel blockade may contribute to the analgesic efficacy of antidepressants". J Pain 8 (4): 315–24. April 2007. doi:10.1016/j.jpain.2006.10.001. PMID 17175203.
10. ↑ Jeschke, Peter; Witschel, Matthias; Krämer, Wolfgang; Schirmer, Ulrich (25 January 2019). "33.4 Voltage-dependent Sodium Channel-blocking Insecticides". Modern Crop Protection Compounds (3rd ed.). Wiley-VCH. pp. 1424–1448. doi:10.1002/9783527699261. ISBN 978-3-527-69926-1. https://onlinelibrary.wiley.com/doi/book/10.1002/9783527699261.
11. ↑ Bagal, Sharan K.; Chapman, Mark L.; Marron, Brian E.; Prime, Rebecca; Ian Storer, R.; Swain, Nigel A. (2014). "Recent progress in sodium channel modulators for pain". Bioorganic & Medicinal Chemistry Letters 24 (16): 3690–9. doi:10.1016/j.bmcl.2014.06.038. ISSN 0960-894X. PMID 25060923.
12. ↑ Martz, Lauren (2014). "Nav-i-gating antibodies for pain". Science-Business EXchange 7 (23): 662. doi:10.1038/scibx.2014.662. ISSN 1945-3477.
13. ↑ Stephen McMahon; Martin Koltzenburg; Irene Tracey; Dennis C. Turk (1 March 2013). Wall & Melzack's Textbook of Pain: Expert Consult - Online. Elsevier Health Sciences. p. 508. ISBN 978-0-7020-5374-0. https://books.google.com/books?id=ok0_jIJ0w_wC&pg=PA508.

* v
* t
* e

Ion channel modulators

Calcium|

| VDCCs|

| Blockers|

* L-type-selective: Dihydropyridines: Amlodipine
* Aranidipine
* Azelnidipine
* Barnidipine
* Clevidipine
* Cronidipine
* Darodipine
* Dexniguldipine
* Elgodipine
* Elnadipine
* Felodipine
* Flordipine
* Furnidipine
* Iganidipine
* Isradipine
* Lacidipine
* Lemildipine
* Lercanidipine
* Levamlodipine
* Levniguldipine
* Manidipine
* Mepirodipine
* Mesudipine
* Nicardipine
* Nifedipine
* Niguldipine
* Niludipine
* Nilvadipine
* Nimodipine
* Nisoldipine
* Nitrendipine
* Olradipine
* Oxodipine
* Palonidipine
* Pranidipine
* Ryodipine (riodipine)
* Sagandipine
* Sornidipine
* Teludipine
* Tiamdipine
* Trombodipine
* Vatanidipine; Diltiazem derivatives: Clentiazem
* Diltiazem
* Iprotiazem
* Nictiazem
* Siratiazem; Phenylalkylamines: Anipamil
* Dagapamil
* Devapamil
* Dexverapamil
* Emopamil
* Etripamil
* Falipamil
* Gallopamil
* Levemopamil
* Nexopamil
* Norverapamil
* Ronipamil
* Tiapamil
* Verapamil; Others: AH-1058
* Brinazarone
* Budiodarone
* Celivarone
* Cyproheptadine
* Dronedarone
* Fantofarone
* SR-33805
* Tetrahydropalmatine

* N-type-selective: ω-Conotoxins
* ω-Conotoxin GVIA
* Caroverine
* Huwentoxin XVI
* Leconotide (ω-conotoxin CVID)
* PD-173212
* Ralfinamide
* Safinamide
* Z160
* Ziconotide (ω-conotoxin MVIIA)

* P-type-selective: ω-Agatoxin IVA
* ω-Agatoxin IVB

* R-type-selective: SNX-482

* T-type-selective: ABT-639
* ML-218
* Niflumic acid
* NNC 55-0396
* ProTx I
* Z944
* Zonisamide

* Non-selective: ω-Agatoxin TK
* ω-Conotoxin MVIIC
* Benidipine
* Bepridil
* Cilnidipine
* Cinnarizine
* Dotarizine
* Efonidipine
* Flunarizine
* Lamotrigine
* Levetiracetam
* Lomerizine
* Loperamide
* Mibefradil
* NP078585
* Ruthenium red
* TROX-1

* α2δ subunit-selective (gabapentinoids): 4-Methylpregabalin
* Arbaclofen
* Arbaclofen placarbil
* Atagabalin
* Baclofen
* Gabapentin
* Gabapentin enacarbil
* Imagabalin
* Mirogabalin
* PD-200,347
* PD-217,014
* PD-299,685
* Phenibut
* Pregabalin

* Others/unsorted: Bencyclane
* Berbamine
* Bevantolol
* Canadine
* Carboxyamidotriazole
* Cycleanine
* Dauricine
* Dimeditiapramine
* Diproteverine
* Enpiperate
* Eperisone
* Elpetrigine
* Ethadione
* Ethanol (alcohol)
* Ethosuximide
* Fasudil
* Fendiline
* Fostedil
* Imepitoin
* JTV-519
* Lidoflazine
* Magnesium
* Manoalide
* Mesuximide
* Monatepil
* Naftopidil
* Ochratoxin A
* Osthol
* Otilonium bromide
* Paramethadione
* Phensuximide
* Pinaverium bromide
* Prenylamine
* Rhynchophylline
* Sesamodil
* Silperisone
* Sipatrigine
* Terodiline
* Tetrandrine
* Tolperisone
* Trimethadione
* Valperinol

|

Activators|

* L-type-selective: Bay K8644

Potassium|

| VGKCs|

| Blockers|

* 3,4-Diaminopyridine (amifampridine)
* 4-Aminopyridine (fampridine/dalfampridine)
* Adekalant
* Almokalant
* Amiodarone
* Azimilide
* Bretylium
* Bunaftine
* Charybdotoxin
* Clamikalant
* Conotoxins
* Dalazatide
* Dendrotoxin
* Dofetilide
* Dronedarone
* E-4031
* Hanatoxin
* HgeTx1
* HsTx1
* Ibutilide
* Inakalant
* Kaliotoxin
* Linopirdine
* Lolitrem B
* Maurotoxin
* Nifekalant
* Notoxin
* Paxilline
* Pinokalant
* Quinidine
* ShK-186
* Sotalol
* Tedisamil
* Terikalant
* Tetraethylammonium
* Vernakalant

* hERG (KCNH2, Kv11.1)-specific: Ajmaline
* Amiodarone
* AmmTX3
* Astemizole
* Azaspiracid
* AZD1305
* Azimilide
* Bedaquiline
* BeKm-1
* BmTx3
* BRL-32872
* Chlorpromazine
* Cisapride
* Clarithromycin
* Darifenacin
* Dextropropoxyphene
* Diallyl trisulfide
* Domperidone
* E-4031
* Ergtoxins
* Erythromycin
* Gigactonine
* Haloperidol
* Ketoconazole
* Norpropoxyphene
* Orphenadrine
* Pimozide
* PNU-282,987
* Promethazine
* Quinidine
* Ranolazine
* Roxithromycin
* Sertindole
* Solifenacin
* Tamulotoxin
* Terodiline
* Terfenadine
* Thioridazine
* Tolterodine
* Vanoxerine
* Vernakalant

* KCNQ (Kv7)-specific: Linopirdine
* XE-991
* Spooky toxin (SsTx)

|

Activators|

* KCNQ (Kv7)-specific: Flupirtine
* Retigabine

IRKs|

| Blockers|

* KATP-specific: Acetohexamide
* Carbutamide
* Chlorpropamide
* Glibenclamide (glyburide)
* Glibornuride
* Glicaramide
* Gliclazide
* Glimepiride
* Glipizide
* Gliquidone
* Glisoxepide
* Glyclopyramide
* Glycyclamide
* Metahexamide
* Mitiglinide
* Nateglinide
* Repaglinide
* Tolazamide
* Tolbutamide

* GIRK-specific: Barium
* Caramiphen
* Cloperastine
* Clozapine
* Dextromethorphan
* Ethosuximide
* Ifenprodil
* Tertiapin
* Tipepidine

|

Activators|

* KATP-specific: Aprikalim
* Bimakalim
* Cromakalim
* Diazoxide
* Emakalim
* Levcromakalim
* Mazokalim
* Minoxidil
* Naminidil
* Nicorandil
* Pinacidil
* Rilmakalim
* Sarakalim

* GIRK-specific: ML-297 (VU0456810)

KCa|

| Blockers|

* BKCa-specific: Ethanol (alcohol)
* GAL-021

|

Activators|

* BKCa-specific: Flufenamic acid
* Meclofenamic acid
* Niflumic acid
* Nimesulide
* Rottlerin (mallotoxin)
* Tolfenamic acid

K2Ps|

| Blockers|

* 12-O-Tetradecanoylphorbol-13-acetate
* Arachidonic acid
* Fluoxetine
* Norfluoxetine

|

Activators|

* Riluzole

Sodium|

| VGSCs|

| Blockers|

* Antianginals: Ranolazine

* Antiarrhythmics (class I): Ajmaline
* Aprindine
* Disopyramide
* Dronedarone
* Encainide
* Flecainide
* Lidocaine
* Lorajmine
* Lorcainide
* Mexiletine
* Moricizine
* Pilsicainide
* Prajmaline
* Procainamide
* Propafenone
* Quinidine
* Sparteine
* Tocainide

* Anticonvulsants: Acetylpheneturide
* Carbamazepine
* Cenobamate
* Chlorphenacemide
* Elpetrigine
* Eslicarbazepine acetate
* Ethotoin
* Fosphenytoin
* Lacosamide
* Licarbazepine
* Mephenytoin
* Oxcarbazepine
* Oxitriptyline
* Phenacemide
* Pheneturide
* Phenytoin
* Rufinamide
* Sipatrigine
* Topiramate
* Sodium valproate
* Valnoctamide
* Valproate pivoxil
* Valproate semisodium
* Valproic acid
* Valpromide
* Zonisamide

* Local anesthetics: pFBT
* Amylocaine
* Articaine
* Benzocaine
* Bupivacaine (Levobupivacaine, Ropivacaine)
* Butacaine
* Butamben
* Chloroprocaine
* Cinchocaine
* Cocaine
* Cyclomethycaine
* Dimethocaine
* Diphenhydramine
* Etidocaine
* Hexylcaine
* Iontocaine
* Lidocaine
* Mepivacaine
* Meprylcaine
* Metabutoxycaine
* Orthocaine
* Piperocaine
* Prilocaine
* Procaine
* Propoxycaine
* Proxymetacaine
* Risocaine
* Tetracaine
* Trimecaine

* Analgesics: AZD-3161
* DSP-2230
* Funapide
* GDC-0276
* NKTR-171
* PF-04531083
* PF-05089771
* Ralfinamide
* Raxatrigine
* RG7893 (GDC-0287)

* Toxins: Conotoxins
* Neosaxitoxin
* Saxitoxin
* Tetrodotoxin
* Zetekitoxin AB

* Others: Buprenorphine
* Evenamide
* Menthol (mint)
* Safinamide
* Tricyclic antidepressants

|

Activators|

* Aconitine
* Atracotoxins (ω-Atracotoxin, Robustoxin, Versutoxin)
* Batrachotoxin
* Ciguatoxins
* Grayanotoxins
* Poneratoxin

ENaC|

| Blockers|

* Amiloride
* Benzamil
* Triamterene

|

Activators|

* Solnatide

ASICs|

| Blockers|

* A-317567
* Amiloride
* Aspirin
* Ibuprofen
* PcTX1

|

Chloride|

| CaCCs|

| Blockers|

* Crofelemer
* DIDS
* Ethacrynic acid
* Flufenamic acid
* Fluoxetine
* Furosemide
* Glibenclamide
* Mefloquine
* Mibefradil
* Niflumic acid

|

Activators|

* Carbachol

CFTR|

| Blockers|

* Glibenclamide
* Lonidamine
* Piretanide

|

Activators|

* 1,7-Phenanthroline
* 1,10-Phenanthroline
* 4,7-Phenanthroline
* 7,8-Benzoquinoline
* Ivacaftor
* Phenanthridine

Unsorted|

| Blockers|

* Bumetanide
* Flufenamic acid
* Meclofenamic acid
* Mefenamic acid
* Mepacrine
* Niflumic acid
* Talniflumate
* Tolfenamic acid
* Trifluoperazine

|

Others|

| TRPs|

* See here instead.

|

LGICs|

* See here instead.

See also: Receptor/signaling modulators • Transient receptor potential channel modulators

* v
* t
* e

Antiarrhythmic agents (C01B)

Channel blockers|

| class I
(Na+ channel blockers)|

| class Ia (Phase 0→ and Phase 3→)|

* Ajmaline
* Disopyramide
* Hydroquinidine
* Lorajmine
* Prajmaline
* Procainamide#
* Quinidine#
* Sparteine

|

class Ib (Phase 3←)|

* IV
* Lidocaine#
* enteral
* Aprindine
* Mexiletine
* Tocainide

class Ic (Phase 0→)|

* Encainide‡
* Ethacizine
* Flecainide
* Indecainide‡
* Lorcainide
* Moracizine‡
* Propafenone

class III
(Phase 3→, K+ channel blockers)|

* Amiodarone
* Bretylium
* Bunaftine
* Celivarone†
* Dofetilide
* Dronedarone
* E-4031†
* Ibutilide
* Nifekalant
* Sotalol
* Tedisamil
* Vernakalant

class IV
(Phase 4→, Ca2+ channel blockers)|

* Diltiazem
* Verapamil#

Receptor agonists<BR>and antagonists|

| class II
(Phase 4→, β blockers)|

* Nadolol
* Pindolol
* Propranolol
* cardioselective
* Acebutolol
* Atenolol
* Esmolol
* Metoprolol

|

A1 agonist|

* Adenosine
* Benzodiazepines
* Barbiturates

M2|

* muscarinic antagonist: Atropine
* Disopyramide
* Quinidine
muscarinic agonist: Digoxin

α receptors|

* Amiodarone
* Bretylium
* Quinidine
* Verapamil

Ion transporters|

| Na+/ K+-ATPase|

* Digitoxin
* Digoxin
* Ouabain

|

* #WHO-EM
* ‡Withdrawn from market
* Clinical trials:
* †Phase III
* §Never to phase III

* v
* t
* e

Local anesthetics (primarily sodium channel blockers) (N01B)

Esters by acid|

| Aminobenzoic|

* Benzocaine
* Butacaine
* Butamben
* Chloroprocaine
* Dimethocaine
* Lucaine
* Meprylcaine
* Metabutethamine
* Metabutoxycaine
* Nitracaine
* Orthocaine
* Propoxycaine
* Procaine (Novocaine)
* Proxymetacaine
* Risocaine
* Tetracaine

|

Benzoic|

* Amylocaine
* Cocaine
* Cyclomethycaine
* α-Eucaine
* β-Eucaine
* Hexylcaine
* Isobucaine
* Piperocaine

ArCO2- (not para-amino or Ph)|

* Amoproxan (3,4,5-Trimethoxybenzoyl)
* 3-(p-Fluorobenzoyloxy)tropane

Amides|

* Articaine
* Bupivacaine# / Levobupivacaine]] / Ropivacaine
* Butanilicaine
* Carticaine
* Cinchocaine (Dibucaine)
* Etidocaine
* Lidocaine#
* Mepivacaine
* Prilocaine
* Trimecaine

Combinations|

* Lidocaine / prilocaine
* Anesthetic / vasoconstrictor
* TAC
* Iontocaine

* #WHO-EM
* ‡Withdrawn from market
* Clinical trials:
* †Phase III
* §Never to phase III

* v
* t
* e

Analgesics (N02A, N02B)

Opioids|

| Opiates/opium|

* Codeine# (+paracetamol, +aspirin)
* Morphine# (+naltrexone)
* Opium
* Laudanum
* Paregoric

|

Semisynthetic|

* Acetyldihydrocodeine
* Benzylmorphine
* Buprenorphine (+naloxone)
* Desomorphine
* Diamorphine (heroin)
* Dihydrocodeine (+paracetamol)
* Dihydromorphine
* Ethylmorphine
* Hydrocodone (+paracetamol, +ibuprofen, +aspirin)
* Hydromorphinol
* Hydromorphone
* Nicocodeine
* Nicodicodine
* Nicomorphine
* Oxycodone (+paracetamol, +aspirin, oxycodone/ibuprofen

Synthetic|

* Alfentanil
* Alphaprodine
* Anileridine
* Butorphanol
* Carfentanil
* Dextromoramide
* Dextropropoxyphene
* Dezocine
* Fentanyl# (+fluanisone)
* Ketobemidone
* Levorphanol
* Lofentanil
* Meptazinol
* Methadone#
* Nalbuphine
* NFEPP
* Pentazocine
* Pethidine (meperidine)
* Phenadoxone
* Phenazocine
* Piminodine
* Piritramide
* Propiram
* Remifentanil
* Sufentanil
* Tapentadol
* Tilidine
* Tramadol

Paracetamol-type|

* Acetanilide‡
* Bucetin‡
* Butacetin‡
* Paracetamol (acetaminophen)#
* Parapropamol‡
* Phenacetin‡
* Propacetamol‡

NSAIDs|

| Propionates|

* Fenoprofen
* Flurbiprofen
* Ibuprofen#
* Ketoprofen
* Naproxen
* Oxaprozin

|

Oxicams|

* Meloxicam
* Piroxicam

Acetates|

* Diclofenac
* Indometacin
* Ketorolac
* Nabumetone
* Sulindac
* Tolmetin

COX-2 inhibitors|

* Celecoxib
* Etoricoxib
* Lumiracoxib
* Parecoxib
* Rofecoxib ‡
* Valdecoxib ‡

Fenamates|

* Meclofenamic acid
* Mefenamic acid

Salicylates|

* Aspirin (acetylsalicylic acid)# (+paracetamol/caffeine)
* Benorylate
* Diflunisal
* Ethenzamide
* Magnesium salicylate
* Salicin
* Salicylamide
* Salsalate
* Wintergreen (methyl salicylate)

Pyrazolones|

* Aminophenazone‡
* Ampyrone
* Metamizole (dipyrone)
* Nifenazone
* Phenazone
* Propyphenazone (+paracetamol/caffeine)

Others|

* Glafenine

Cannabinoids|

* Cannabidiol
* Cannabis
* Nabilone
* Nabiximols
* Tetrahydrocannabinol (dronabinol)

Ion channel
modulators|

| Calcium blockers|

* Gabapentin
* Gabapentin enacarbil
* Mirogabalin
* Pregabalin
* Ziconotide

|

Sodium blockers|

* Carbamazepine
* Lacosamide
* Local anesthetics (e.g., cocaine, lidocaine)
* Mexiletine
* Nefopam
* Tricyclic antidepressants (e.g., amitriptyline#)

* Nav1.7/1.8-selective: DSP-2230§
* Funapide§
* PF-05089771§

Potassium openers|

* Flupirtine

Myorelaxants|

* Carisoprodol
* Chlorzoxazone
* Cyclobenzaprine
* Mephenoxalone
* Methocarbamol
* Orphenadrine

Others|

* Analgesic adjuvant
* Analgecine
* Camphor
* Capsaicin
* Clonidine
* Ketamine
* Menthol
* Methoxyflurane
* Nefopam
* Proglumide
* Tricyclic antidepressants (e.g., amitriptyline#)

* #WHO-EM
* ‡Withdrawn from market
* Clinical trials:
* †Phase III
* §Never to phase III

* v
* t
* e

Anticonvulsants (N03)

GABAergics|

| GABAAR PAMs|

* Barbiturates: Barbexaclone
* Metharbital
* Methylphenobarbital
* Pentobarbital
* Phenobarbital#
* Primidone; Carbamates: Felbamate; Benzodiazepines: Clobazam
* Clonazepam
* Clorazepate
* Diazepam#
* Lorazepam#
* Midazolam
* Nimetazepam
* Nitrazepam
* Temazepam; Others: Bromide (potassium bromide, sodium bromide)
* Imepitoin
* Paraldehyde
* Stiripentol

|

GABA-T inhibitors|

* Fatty acids (and related): Valproate
* Valpromide
* Valproate pivoxil
* Vigabatrin

Others|

* GABAR agonists: Progabide; GAT-1 inhibitors: Tiagabine

Channel
modulators|

| Sodium blockers|

* Hydantoins: Ethotoin
* Fosphenytoin
* Mephenytoin
* Phenytoin#; Ureides: Acetylpheneturide
* Chlorphenacemide
* Phenacemide‡
* Pheneturide; Fatty acids: Valproate
* Valpromide
* Valproate pivoxil; Carboxamides: Carbamazepine#
* Eslicarbazepine acetate
* Oxcarbazepine; Others: Lacosamide
* Lamotrigine#
* Rufinamide
* Topiramate
* Zonisamide

|

Calcium blockers|

* Oxazolidinediones: Ethadione
* Paramethadione
* Trimethadione; Succinimides: Ethosuximide#
* Mesuximide
* Phensuximide; Gabapentinoids: Gabapentin
* Pregabalin; Others: Imepitoin
* Lamotrigine#
* Topiramate
* Zonisamide

Potassium openers|

* Retigabine

Others|

| CA inhibitors|

* Sulfonamides: Acetazolamide
* Ethoxzolamide
* Sultiame
* Topiramate
* Zonisamide

|

Others|

* Albutoin
* Beclamide
* Brivaracetam
* Cannabidiol
* Etiracetam
* Levetiracetam
* Perampanel

* #WHO-EM
* ‡Withdrawn from market
* Clinical trials:
* †Phase III
* §Never to phase III

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Original source: https://en.wikipedia.org/wiki/Sodium channel blocker. Read more

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*[VDCCs]: Voltage-dependent calcium channels
*[VGKCs]: Voltage-gated potassium channels
*[IRKs]: Inwardly rectifying potassium channel
*[KATP]: ATP-sensitive potassium channel
*[GIRK]: G protein-coupled inwardly-rectifying potassium channel
*[KCa]: Calcium-activated potassium channel
*[K2Ps]: Tandem pore domain potassium channel
*[VGSCs]: Voltage-gated sodium channels
*[ENaC]: Epithelial sodium channel
*[ASICs]: Acid-sensing ion channel
*[CaCCs]: Calcium-activated chloride channel
*[CFTR]: Cystic fibrosis transmembrane conductance regulator
*[TRPs]: Transient receptor potential channels
*[LGICs]: Ligand gated ion channels