Secobarbital

What is Secobarbital

Secobarbital is a short-acting oral barbiturate similar to pentobarbital. The parenteral and rectal formulations are no longer available in the US.

It is rarely used in the short-term treatment of insomnia for periods of up to 2 weeks. Preoperatively, secobarbital is used to relieve anxiety and induce sedation.

Compared with other barbiturates, it has the highest lipid solubility, which allows it to have a faster distribution. Secobarbital was approved by the FDA in 1950.

Brand Name

Seconal

Indications

  • insomnia
  • procedural sedation

Side Effects

  1. agitation
  2. angioedema
  3. anxiety
  4. apnea
  5. ataxia
  6. bone fractures
  7. bradycardia
  8. bullous rash
  9. complex sleep-related behaviors
  10. confusion
  11. constipation
  12. depression
  13. diarrhea
  14. dizziness
  15. drowsiness
  16. excitability
  17. exfoliative dermatitis
  18. fever
  19. hallucinations
  20. headache
  21. hyperkinesis
  22. hypotension
  23. hypoventilation
  24. impaired cognition
  25. insomnia
  26. maculopapular rash
  27. megaloblastic anemia
  28. memory impairment
  29. miosis
  30. mydriasis
  31. nausea
  32. neonatal abstinence syndrome
  33. neonatal respiratory depression
  34. nightmares
  35. nystagmus
  36. osteomalacia
  37. osteopenia
  38. physiological dependence
  39. psychological dependence
  40. rash
  41. somnambulism
  42. Stevens-Johnson syndrome
  43. suicidal ideation
  44. syncope
  45. thrombocytopenia
  46. toxic epidermal necrolysis
  47. urticaria
  48. vomiting
  49. withdrawal

Monitoring Parameters

  • CBC

Contraindications

  • abrupt discontinuation
  • agranulocytosis
  • alcoholism
  • anticoagulant therapy
  • barbiturate hypersensitivity
  • breast-feeding
  • carbamazepine hypersensitivity
  • children
  • chronic obstructive pulmonary disease (COPD)
  • CNS depression
  • coadministration with other CNS depressants
  • complex sleep-related behaviors
  • depression
  • driving or operating machinery
  • ethanol ingestion
  • geriatric
  • hepatic disease
  • hepatic encephalopathy
  • hydantoin hypersensitivity
  • infants
  • labor
  • mental status changes
  • neonates
  • obstetric delivery
  • osteomalacia
  • osteoporosis
  • pain
  • porphyria
  • pregnancy
  • premature neonates
  • pulmonary disease
  • renal failure
  • renal impairment
  • respiratory depression
  • seizure disorder
  • seizures
  • sleep apnea
  • status epilepticus
  • substance abuse
  • suicidal ideation

Interactions

  • Abemaciclib
  • Acetaminophen
  • Acetaminophen; Aspirin, ASA; Caffeine
  • Acetaminophen; Butalbital
  • Acetaminophen; Butalbital; Caffeine
  • Acetaminophen; Butalbital; Caffeine; Codeine
  • Acetaminophen; Caffeine
  • Acetaminophen; Caffeine; Dihydrocodeine
  • Acetaminophen; Caffeine; Magnesium Salicylate; Phenyltoloxamine
  • Acetaminophen; Caffeine; Phenyltoloxamine; Salicylamide
  • Acetaminophen; Chlorpheniramine; Dextromethorphan; Phenylephrine
  • Acetaminophen; Chlorpheniramine; Dextromethorphan; Pseudoephedrine
  • Acetaminophen; Chlorpheniramine; Phenylephrine; Phenyltoloxamine
  • Acetaminophen; Codeine
  • Acetaminophen; Dextromethorphan
  • Acetaminophen; Dextromethorphan; Doxylamine
  • Acetaminophen; Dextromethorphan; Guaifenesin; Phenylephrine
  • Acetaminophen; Dextromethorphan; Phenylephrine
  • Acetaminophen; Dextromethorphan; Pseudoephedrine
  • Acetaminophen; Dichloralphenazone; Isometheptene
  • Acetaminophen; Diphenhydramine
  • Acetaminophen; Guaifenesin; Phenylephrine
  • Acetaminophen; Hydrocodone
  • Acetaminophen; Oxycodone
  • Acetaminophen; Pentazocine
  • Acetaminophen; Propoxyphene
  • Acetaminophen; Pseudoephedrine
  • Acetaminophen; Tramadol
  • Acetazolamide
  • Acrivastine; Pseudoephedrine
  • Aldesleukin, IL-2
  • Alfentanil
  • Aliskiren; Amlodipine
  • Aliskiren; Amlodipine; Hydrochlorothiazide, HCTZ
  • Aliskiren; Hydrochlorothiazide, HCTZ
  • Alprazolam
  • Altretamine
  • Amiloride; Hydrochlorothiazide, HCTZ
  • Aminosalicylate sodium, Aminosalicylic acid
  • Amitriptyline; Chlordiazepoxide
  • Amlodipine
  • Amlodipine; Atorvastatin
  • Amlodipine; Benazepril
  • Amlodipine; Celecoxib
  • Amlodipine; Hydrochlorothiazide, HCTZ; Olmesartan
  • Amlodipine; Hydrochlorothiazide, HCTZ; Valsartan
  • Amlodipine; Olmesartan
  • Amlodipine; Telmisartan
  • Amlodipine; Valsartan
  • Amoxapine
  • Amoxicillin; Clarithromycin; Lansoprazole
  • Amoxicillin; Clarithromycin; Omeprazole
  • Amprenavir
  • Anagrelide
  • Apomorphine
  • Apraclonidine
  • Apremilast
  • Aprepitant, Fosaprepitant
  • Aripiprazole
  • Armodafinil
  • Artemether; Lumefantrine
  • Asenapine
  • Aspirin, ASA
  • Aspirin, ASA; Butalbital; Caffeine
  • Aspirin, ASA; Butalbital; Caffeine; Codeine
  • Aspirin, ASA; Caffeine; Dihydrocodeine
  • Aspirin, ASA; Caffeine; Orphenadrine
  • Aspirin, ASA; Carisoprodol
  • Aspirin, ASA; Carisoprodol; Codeine
  • Aspirin, ASA; Citric Acid; Sodium Bicarbonate
  • Aspirin, ASA; Dipyridamole
  • Aspirin, ASA; Omeprazole
  • Aspirin, ASA; Oxycodone
  • Aspirin, ASA; Pravastatin
  • Atazanavir
  • Atazanavir; Cobicistat
  • Atenolol; Chlorthalidone
  • Atorvastatin
  • Atorvastatin; Ezetimibe
  • Atropine; Benzoic Acid; Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate
  • Atropine; Difenoxin
  • Atropine; Diphenoxylate
  • Atropine; Hyoscyamine; Phenobarbital; Scopolamine
  • Avanafil
  • Avapritinib
  • Avatrombopag
  • Axitinib
  • Azelastine
  • Azelastine; Fluticasone
  • Azilsartan; Chlorthalidone
  • Bedaquiline
  • Belladonna; Opium
  • Benazepril; Hydrochlorothiazide, HCTZ
  • Bendamustine
  • Bendroflumethiazide; Nadolol
  • Benzhydrocodone; Acetaminophen
  • Benzoic Acid; Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate
  • Benztropine
  • Betaxolol
  • Bicalutamide
  • Bismuth Subcitrate Potassium; Metronidazole; Tetracycline
  • Bismuth Subsalicylate
  • Bismuth Subsalicylate; Metronidazole; Tetracycline
  • Bisoprolol; Hydrochlorothiazide, HCTZ
  • Bortezomib
  • Brexpiprazole
  • Brigatinib
  • Brimonidine
  • Brimonidine; Brinzolamide
  • Brimonidine; Timolol
  • Brivaracetam
  • Bromocriptine
  • Brompheniramine
  • Brompheniramine; Carbetapentane; Phenylephrine
  • Brompheniramine; Dextromethorphan; Guaifenesin
  • Brompheniramine; Guaifenesin; Hydrocodone
  • Brompheniramine; Hydrocodone; Pseudoephedrine
  • Brompheniramine; Pseudoephedrine
  • Bupivacaine
  • Bupivacaine Liposomal
  • Bupivacaine; Lidocaine
  • Buprenorphine
  • Buprenorphine; Naloxone
  • Bupropion
  • Bupropion; Naltrexone
  • Buspirone
  • Butorphanol
  • Caffeine
  • Caffeine; Ergotamine
  • Calcifediol
  • Calcitriol
  • Candesartan; Hydrochlorothiazide, HCTZ
  • Cannabidiol
  • Capmatinib
  • Captopril; Hydrochlorothiazide, HCTZ
  • Carbamazepine
  • Carbetapentane; Chlorpheniramine
  • Carbetapentane; Chlorpheniramine; Phenylephrine
  • Carbetapentane; Diphenhydramine; Phenylephrine
  • Carbetapentane; Guaifenesin
  • Carbetapentane; Guaifenesin; Phenylephrine
  • Carbetapentane; Phenylephrine
  • Carbetapentane; Phenylephrine; Pyrilamine
  • Carbetapentane; Pseudoephedrine
  • Carbetapentane; Pyrilamine
  • Carbidopa; Levodopa; Entacapone
  • Carbinoxamine
  • Carbinoxamine; Dextromethorphan; Pseudoephedrine
  • Carbinoxamine; Hydrocodone; Phenylephrine
  • Carbinoxamine; Hydrocodone; Pseudoephedrine
  • Carbinoxamine; Phenylephrine
  • Carbinoxamine; Pseudoephedrine
  • Cardiac glycosides
  • Cariprazine
  • Cenobamate
  • Cetirizine
  • Cetirizine; Pseudoephedrine
  • Cevimeline
  • Chlophedianol; Dexchlorpheniramine; Pseudoephedrine
  • Chlorambucil
  • Chloramphenicol
  • Chlordiazepoxide
  • Chlordiazepoxide; Clidinium
  • Chlorothiazide
  • Chlorpheniramine
  • Chlorpheniramine; Codeine
  • Chlorpheniramine; Dextromethorphan
  • Chlorpheniramine; Dextromethorphan; Phenylephrine
  • Chlorpheniramine; Dihydrocodeine; Phenylephrine
  • Chlorpheniramine; Dihydrocodeine; Pseudoephedrine
  • Chlorpheniramine; Guaifenesin; Hydrocodone; Pseudoephedrine
  • Chlorpheniramine; Hydrocodone
  • Chlorpheniramine; Hydrocodone; Phenylephrine
  • Chlorpheniramine; Hydrocodone; Pseudoephedrine
  • Chlorpheniramine; Phenylephrine
  • Chlorpheniramine; Pseudoephedrine
  • Chlorthalidone
  • Chlorthalidone; Clonidine
  • Choline Salicylate; Magnesium Salicylate
  • Cinacalcet
  • Citalopram
  • Clemastine
  • Clobazam
  • Clonazepam
  • Clorazepate
  • Clozapine
  • Cobimetinib
  • Codeine
  • Codeine; Guaifenesin
  • Codeine; Phenylephrine; Promethazine
  • Codeine; Promethazine
  • Colesevelam
  • COMT inhibitors
  • Conjugated Estrogens
  • Conjugated Estrogens; Bazedoxifene
  • Conjugated Estrogens; Medroxyprogesterone
  • Cyclophosphamide
  • Cyclosporine
  • Cyproheptadine
  • Darifenacin
  • Darunavir
  • Darunavir; Cobicistat
  • Darunavir; Cobicistat; Emtricitabine; Tenofovir alafenamide
  • Dasabuvir; Ombitasvir; Paritaprevir; Ritonavir
  • Delavirdine
  • Deutetrabenazine
  • Dexchlorpheniramine
  • Dexchlorpheniramine; Dextromethorphan; Pseudoephedrine
  • Dexlansoprazole
  • Dexmedetomidine
  • Dextromethorphan; Diphenhydramine; Phenylephrine
  • Dextromethorphan; Quinidine
  • Diazepam
  • Diclofenac
  • Diclofenac; Misoprostol
  • Dicyclomine
  • Dienogest; Estradiol valerate
  • Diethylstilbestrol, DES
  • Dihydrocodeine; Guaifenesin; Pseudoephedrine
  • Diltiazem
  • Dimenhydrinate
  • Diphenhydramine
  • Diphenhydramine; Hydrocodone; Phenylephrine
  • Diphenhydramine; Ibuprofen
  • Diphenhydramine; Naproxen
  • Diphenhydramine; Phenylephrine
  • Disopyramide
  • Dolutegravir; Rilpivirine
  • Donepezil
  • Donepezil; Memantine
  • Doravirine
  • Doravirine; Lamivudine; Tenofovir disoproxil fumarate
  • Doxercalciferol
  • Doxorubicin
  • Doxycycline
  • Doxylamine
  • Doxylamine; Pyridoxine
  • Dronabinol
  • Dronedarone
  • Droperidol
  • Drospirenone; Estradiol
  • Drospirenone; Ethinyl Estradiol
  • Drospirenone; Ethinyl Estradiol; Levomefolate
  • Efavirenz
  • Efavirenz; Emtricitabine; Tenofovir
  • Efavirenz; Lamivudine; Tenofovir Disoproxil Fumarate
  • Elagolix; Estradiol; Norethindrone acetate
  • Elbasvir; Grazoprevir
  • Eltrombopag
  • Empagliflozin; Linagliptin
  • Empagliflozin; Linagliptin; Metformin
  • Emtricitabine; Rilpivirine; Tenofovir alafenamide
  • Emtricitabine; Rilpivirine; Tenofovir disoproxil fumarate
  • Enalapril; Felodipine
  • Enalapril; Hydrochlorothiazide, HCTZ
  • Encorafenib
  • Entacapone
  • Entrectinib
  • Eprosartan; Hydrochlorothiazide, HCTZ
  • Erdafitinib
  • Erlotinib
  • Escitalopram
  • Esketamine
  • Eslicarbazepine
  • Esomeprazole
  • Esomeprazole; Naproxen
  • Estazolam
  • Esterified Estrogens
  • Esterified Estrogens; Methyltestosterone
  • Estradiol
  • Estradiol Cypionate; Medroxyprogesterone
  • Estradiol; Levonorgestrel
  • Estradiol; Norethindrone
  • Estradiol; Norgestimate
  • Estradiol; Progesterone
  • Estrogens
  • Estropipate
  • Eszopiclone
  • Ethanol
  • Ethinyl Estradiol
  • Ethinyl Estradiol; Desogestrel
  • Ethinyl Estradiol; Ethynodiol Diacetate
  • Ethinyl Estradiol; Etonogestrel
  • Ethinyl Estradiol; Levonorgestrel
  • Ethinyl Estradiol; Levonorgestrel; Ferrous bisglycinate
  • Ethinyl Estradiol; Levonorgestrel; Folic Acid; Levomefolate
  • Ethinyl Estradiol; Norelgestromin
  • Ethinyl Estradiol; Norethindrone
  • Ethinyl Estradiol; Norethindrone Acetate
  • Ethinyl Estradiol; Norethindrone Acetate; Ferrous fumarate
  • Ethinyl Estradiol; Norethindrone; Ferrous fumarate
  • Ethinyl Estradiol; Norgestimate
  • Ethinyl Estradiol; Norgestrel
  • Ethosuximide
  • Ezetimibe; Simvastatin
  • Fedratinib
  • Felodipine
  • Fenoprofen
  • Fentanyl
  • Flibanserin
  • Fluconazole
  • Fluoxetine; Olanzapine
  • food
  • Fosamprenavir
  • Fosinopril; Hydrochlorothiazide, HCTZ
  • Gabapentin
  • Galantamine
  • Gallium Ga 68 Dotatate
  • General anesthetics
  • Glasdegib
  • Glimepiride
  • Glimepiride; Pioglitazone
  • Glimepiride; Rosiglitazone
  • Green Tea
  • Griseofulvin
  • Guaifenesin; Hydrocodone
  • Guaifenesin; Hydrocodone; Pseudoephedrine
  • Guanfacine
  • Haloperidol
  • Hemin
  • Homatropine; Hydrocodone
  • Hydantoins
  • Hydralazine; Hydrochlorothiazide, HCTZ
  • Hydrochlorothiazide, HCTZ
  • Hydrochlorothiazide, HCTZ; Irbesartan
  • Hydrochlorothiazide, HCTZ; Lisinopril
  • Hydrochlorothiazide, HCTZ; Losartan
  • Hydrochlorothiazide, HCTZ; Methyldopa
  • Hydrochlorothiazide, HCTZ; Metoprolol
  • Hydrochlorothiazide, HCTZ; Moexipril
  • Hydrochlorothiazide, HCTZ; Olmesartan
  • Hydrochlorothiazide, HCTZ; Propranolol
  • Hydrochlorothiazide, HCTZ; Quinapril
  • Hydrochlorothiazide, HCTZ; Spironolactone
  • Hydrochlorothiazide, HCTZ; Telmisartan
  • Hydrochlorothiazide, HCTZ; Triamterene
  • Hydrochlorothiazide, HCTZ; Valsartan
  • Hydrocodone
  • Hydrocodone; Ibuprofen
  • Hydrocodone; Phenylephrine
  • Hydrocodone; Potassium Guaiacolsulfonate
  • Hydrocodone; Potassium Guaiacolsulfonate; Pseudoephedrine
  • Hydrocodone; Pseudoephedrine
  • Hydromorphone
  • Hydroxyzine
  • Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate; Sodium Biphosphate
  • Ibuprofen; Oxycodone
  • Iloperidone
  • Imatinib
  • Indinavir
  • Isradipine
  • Itraconazole
  • Ivabradine
  • Ixabepilone
  • Ketoconazole
  • Lansoprazole
  • Lansoprazole; Naproxen
  • Lasmiditan
  • Lefamulin
  • Lemborexant
  • Lesinurad
  • Lesinurad; Allopurinol
  • Leucovorin
  • Levobupivacaine
  • Levocetirizine
  • Levoleucovorin
  • Levorphanol
  • Linagliptin
  • Linagliptin; Metformin
  • Lithium
  • Lofexidine
  • Lopinavir; Ritonavir
  • Lorazepam
  • Lorlatinib
  • Lovastatin
  • Lovastatin; Niacin
  • Loxapine
  • Lumateperone
  • Lurasidone
  • Magnesium Salicylate
  • Magnesium Salts
  • Mannitol
  • Maprotiline
  • Mebendazole
  • Meclizine
  • Mefloquine
  • Melatonin
  • Meperidine
  • Meperidine; Promethazine
  • Meprobamate
  • Mestranol; Norethindrone
  • Metformin; Repaglinide
  • Methadone
  • Methazolamide
  • Methocarbamol
  • Methscopolamine
  • Methsuximide
  • Methyclothiazide
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  • Metolazone
  • Metronidazole
  • Metyrapone
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  • Mexiletine
  • Midazolam
  • Minocycline
  • Mirtazapine
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  • Morphine; Naltrexone
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  • Ziprasidone
  • Zolpidem
  • Zonisamide
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