What's on this Page
Chlorpheniramine Hydrocodone Pseudoephedrine Brand Names
Atuss HD | Atuss HS | C-Cof HC | ColdCough HC | Cordron HC | Cordron HC NR | Hexatussin | Histinex PV | Hydron PSC | Hydro-Tussin HC | Hyphed | M-End | Notuss | Notuss-Forte | P V Tussin | Pancof HC | Pediatex HC | Q-V Tussin | Tussend | Tussin V | WellTuss HC | ZUTRIPRO
What is Chlorpheniramine Hydrocodone Pseudoephedrine
Chlorpheniramine hydrocodone pseudoephedrine are used together in an oral preparation to relieve cough, congestion and associated symptoms of allergies and the common cold.
Chlorpheniramine is a sedating antihistamine (H1-blocker) of the alkylamine class with antihistamine effects similar to diphenhydramine.
Hydrocodone is a semisynthetic opiate agonist included for its antitussive effects. Pseudoephedrine is a sympathomimetic decongestant that relieves nasal and sinus congestion.
Opioid cough and cold medicines that contain hydrocodone are not indicated in pediatric patients under 18 years of age.
The products are contraindicated in neonates, infants, and children less than 6 years of age; the risks of these medicines outweigh their benefits in patients younger than 18 years.
Indications
- allergic rhinitis
- common cold
- cough
- nasal congestion
For the relief of symptoms such as cough and/or nasal congestion associated with the common cold or upper respiratory allergies (e.g., allergic rhinitis)
Side Effects
- abdominal pain
- acute generalized exanthematous pustulosis (AGEP)
- adrenocortical insufficiency
- agitation
- agranulocytosis
- amenorrhea
- anaphylactoid reactions
- angina
- anxiety
- aplastic anemia
- arrhythmia exacerbation
- arthralgia
- ataxia
- atrial fibrillation
- back pain
- biliary obstruction
- bladder spasm
- blurred vision
- bronchial secretions
- chest pain (unspecified)
- colitis
- coma
- confusion
- constipation
- cough
- cyanosis
- depression
- diplopia
- dizziness
- drowsiness
- dyskinesia
- dyspepsia
- dysphagia
- dysphoria
- dyspnea
- emotional lability
- euphoria
- fatigue
- flushing
- gastroesophageal reflux
- GI obstruction
- hallucinations
- headache
- hot flashes
- hyperactivity
- hyperamylasemia
- hyperhidrosis
- hyperthermia
- hypotension
- ileus
- impaired cognition
- impotence (erectile dysfunction)
- increased intracranial pressure
- infection
- infertility
- insomnia
- ischemic colitis
- lethargy
- libido decrease
- migraine
- miosis
- muscle cramps
- mydriasis
- myocardial infarction
- nasal congestion
- nasal dryness
- nausea
- neonatal opioid withdrawal syndrome
- neonatal respiratory depression
- orthostatic hypotension
- palpitations
- pancreatitis
- peripheral edema
- peripheral vasodilation
- pharyngitis
- physiological dependence
- premature ventricular contractions (PVCs)
- pruritus
- psychological dependence
- psychomotor impairment
- pulmonary edema
- QT prolongation
- rash
- respiratory arrest
- respiratory depression
- restlessness
- seizures
- serotonin syndrome
- sinus tachycardia
- sinusitis
- stroke
- supraventricular tachycardia (SVT)
- syncope
- thrombocytopenia
- tinnitus
- tolerance
- tremor
- urinary retention
- urticaria
- vertigo
- vomiting
- weakness
- wheezing
- withdrawal
- xerophthalmia
- xerostomia
Monitoring Parameters
- laboratory monitoring not necessary
Contraindications
- abrupt discontinuation
- accidental exposure
- acute abdomen
- acute myocardial infarction
- adrenal insufficiency
- alcoholism
- angina
- asthma
- biliary tract disease
- bladder obstruction
- brain tumor
- breast-feeding
- cardiac arrhythmias
- cardiac disease
- cardiomyopathy
- children
- chronic obstructive pulmonary disease (COPD)
- closed-angle glaucoma
- coadministration with other CNS depressants
- coma
- constipation
- contact lenses
- cor pulmonale
- coronary artery disease
- dehydration
- depression
- diabetes mellitus
- diarrhea
- driving or operating machinery
- ethanol ingestion
- ethanol intoxication
- gallbladder disease
- geriatric
- GI obstruction
- head trauma
- hepatic disease
- hypertension
- hyperthyroidism
- hypotension
- hypothyroidism
- hypovolemia
- hypoxemia
- ileus
- increased intracranial pressure
- infants
- labor
- MAOI therapy
- myocardial infarction
- myxedema
- neonatal opioid withdrawal syndrome
- neonates
- neuromuscular disease
- obesity
- obstetric delivery
- opiate agonist hypersensitivity
- orthostatic hypotension
- pancreatitis
- potential for overdose or poisoning
- pregnancy
- prostatic hypertrophy
- pulmonary disease
- renal failure
- renal impairment
- respiratory depression
- respiratory insufficiency
- scoliosis
- seizure disorder
- seizures
- shock
- sleep apnea
- status asthmaticus
- substance abuse
- syncope
- ulcerative colitis
- urethral stricture
- urinary retention
- ventricular fibrillation
Interactions
- Abiraterone
- Acarbose
- Acebutolol
- 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; Phenylephrine; Phenyltoloxamine
- Acetaminophen; Codeine
- Acetaminophen; Dextromethorphan; Doxylamine
- Acetaminophen; Dextromethorphan; Guaifenesin; Phenylephrine
- Acetaminophen; Dextromethorphan; Phenylephrine
- Acetaminophen; Dichloralphenazone; Isometheptene
- Acetaminophen; Diphenhydramine
- Acetaminophen; Guaifenesin; Phenylephrine
- Acetaminophen; Hydrocodone
- Acetaminophen; Oxycodone
- Acetaminophen; Pentazocine
- Acetaminophen; Propoxyphene
- Acetaminophen; Tramadol
- Acetazolamide
- Aclidinium; Formoterol
- Acrivastine; Pseudoephedrine
- Albiglutide
- Albuterol
- Albuterol; Ipratropium
- Aldesleukin, IL-2
- Alfentanil
- Aliskiren; Amlodipine
- Aliskiren; Amlodipine; Hydrochlorothiazide, HCTZ
- Aliskiren; Hydrochlorothiazide, HCTZ
- Alkalinizing Agents
- Almotriptan
- Alogliptin; Metformin
- Alogliptin; Pioglitazone
- Alosetron
- Alpha-blockers
- Alpha-glucosidase Inhibitors
- Alprazolam
- Aluminum Hydroxide
- Aluminum Hydroxide; Magnesium Carbonate
- Aluminum Hydroxide; Magnesium Hydroxide
- Aluminum Hydroxide; Magnesium Hydroxide; Simethicone
- Aluminum Hydroxide; Magnesium Trisilicate
- Alvimopan
- Amantadine
- Ambenonium Chloride
- Amide local anesthetics
- Amifampridine
- Amikacin
- Amiloride
- Amiloride; Hydrochlorothiazide, HCTZ
- Aminoglycosides
- Amiodarone
- Amitriptyline; Chlordiazepoxide
- Amlodipine
- Amlodipine; Atorvastatin
- Amlodipine; Benazepril
- Amlodipine; Celecoxib
- Amlodipine; Hydrochlorothiazide, HCTZ; Olmesartan
- Amlodipine; Hydrochlorothiazide, HCTZ; Valsartan
- Amlodipine; Olmesartan
- Amlodipine; Telmisartan
- Amlodipine; Valsartan
- Ammonium Chloride
- Amobarbital
- Amoxapine
- Amoxicillin; Clarithromycin; Lansoprazole
- Amoxicillin; Clarithromycin; Omeprazole
- Amphetamine
- Amphetamine; Dextroamphetamine
- Amphetamine; Dextroamphetamine Salts
- Angiotensin II receptor antagonists
- Angiotensin-converting enzyme inhibitors
- Anticholinergics
- Apalutamide
- Apomorphine
- Apraclonidine
- Aprepitant, Fosaprepitant
- Arformoterol
- Aripiprazole
- Armodafinil
- Artemether; Lumefantrine
- Articaine; Epinephrine
- Asenapine
- 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; Oxycodone
- Atazanavir
- Atazanavir; Cobicistat
- Atenolol
- Atenolol; Chlorthalidone
- Atomoxetine
- Atropine
- Atropine; Benzoic Acid; Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate
- Atropine; Difenoxin
- Atropine; Diphenoxylate
- Atropine; Edrophonium
- Atropine; Hyoscyamine; Phenobarbital; Scopolamine
- Azelastine
- Azelastine; Fluticasone
- Azilsartan; Chlorthalidone
- Baclofen
- Barbiturates
- Belladonna Alkaloids; Ergotamine; Phenobarbital
- Belladonna; Opium
- Benazepril
- Benazepril; Hydrochlorothiazide, HCTZ
- Bendroflumethiazide; Nadolol
- Benzhydrocodone; Acetaminophen
- Benzodiazepines
- Benzoic Acid; Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate
- Benzonatate
- Benzphetamine
- Benztropine
- Beta-blockers
- Betaxolol
- Bethanechol
- Bexarotene
- Bisacodyl
- Bismuth Subcitrate Potassium; Metronidazole; Tetracycline
- Bismuth Subsalicylate
- Bismuth Subsalicylate; Metronidazole; Tetracycline
- Bisoprolol
- Bisoprolol; Hydrochlorothiazide, HCTZ
- Boceprevir
- Bosentan
- Bretylium
- Brexpiprazole
- Brigatinib
- Brimonidine
- Brimonidine; Brinzolamide
- Brimonidine; Timolol
- Bromocriptine
- Brompheniramine
- Brompheniramine; Carbetapentane; Phenylephrine
- Brompheniramine; Dextromethorphan; Guaifenesin
- Brompheniramine; Guaifenesin; Hydrocodone
- Brompheniramine; Hydrocodone; Pseudoephedrine
- Brompheniramine; Pseudoephedrine
- Budesonide; Formoterol
- Bumetanide
- Bupivacaine
- Bupivacaine Liposomal
- Bupivacaine; Lidocaine
- Buprenorphine
- Buprenorphine; Naloxone
- Bupropion
- Bupropion; Naltrexone
- Buspirone
- Butabarbital
- Butorphanol
- Caffeine
- Caffeine; Ergotamine
- Calcium Carbonate
- Calcium Carbonate; Magnesium Hydroxide
- Calcium Carbonate; Risedronate
- Calcium Carbonate; Simethicone
- Calcium-channel blockers
- Canagliflozin
- Canagliflozin; Metformin
- Candesartan; Hydrochlorothiazide, HCTZ
- Cannabidiol
- Capsaicin; Metaxalone
- Captopril
- 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
- Carisoprodol
- Carteolol
- Carvedilol
- Castor Oil
- Celecoxib
- Cenobamate
- Ceritinib
- Cetirizine
- Cetirizine; Pseudoephedrine
- Chlophedianol; Dexbrompheniramine
- Chlophedianol; Dexchlorpheniramine; Pseudoephedrine
- Chlophedianol; Guaifenesin; Phenylephrine
- Chloral Hydrate
- Chloramphenicol
- Chlorcyclizine
- Chlordiazepoxide
- Chlordiazepoxide; Clidinium
- Chloroprocaine
- Chlorothiazide
- Chlorpheniramine; Codeine
- Chlorpheniramine; Dextromethorphan; Phenylephrine
- Chlorpheniramine; Dihydrocodeine; Phenylephrine
- Chlorpheniramine; Dihydrocodeine; Pseudoephedrine
- Chlorpheniramine; Guaifenesin; Hydrocodone; Pseudoephedrine
- Chlorpheniramine; Hydrocodone
- Chlorpheniramine; Hydrocodone; Phenylephrine
- Chlorpheniramine; Phenylephrine
- Chlorpromazine
- Chlorthalidone
- Chlorthalidone; Clonidine
- Chlorzoxazone
- Cimetidine
- Cinacalcet
- Ciprofloxacin
- Citalopram
- Clarithromycin
- Clemastine
- Clevidipine
- Clobazam
- Clonazepam
- Clonidine
- Clopidogrel
- Clorazepate
- Clozapine
- Cobicistat
- Cocaine
- Codeine
- Codeine; Guaifenesin
- Codeine; Phenylephrine; Promethazine
- Codeine; Promethazine
- Colchicine
- Colchicine; Probenecid
- COMT inhibitors
- Conivaptan
- Crizotinib
- Crofelemer
- Cyclizine
- Cyclobenzaprine
- Cyclosporine
- Cyproheptadine
- Dabrafenib
- Dacomitinib
- Dalfopristin; Quinupristin
- Danazol
- Dantrolene
- Dapagliflozin
- Dapagliflozin; Metformin
- Dapagliflozin; Saxagliptin
- Daratumumab; Hyaluronidase
- Darifenacin
- Darunavir
- Darunavir; Cobicistat
- Darunavir; Cobicistat; Emtricitabine; Tenofovir alafenamide
- Dasabuvir; Ombitasvir; Paritaprevir; Ritonavir
- Deferasirox
- Delavirdine
- Desflurane
- Desloratadine
- Desloratadine; Pseudoephedrine
- Desmopressin
- Desvenlafaxine
- Deutetrabenazine
- Dexamethasone
- Dexchlorpheniramine
- Dexchlorpheniramine; Dextromethorphan; Pseudoephedrine
- Dexmedetomidine
- Dexpanthenol
- Dextroamphetamine
- Dextromethorphan; Diphenhydramine; Phenylephrine
- Dextromethorphan; Guaifenesin; Phenylephrine
- Dextromethorphan; Promethazine
- Dextromethorphan; Quinidine
- Diazepam
- Dicyclomine
- Digitoxin
- Digoxin
- Dihydrocodeine; Guaifenesin; Pseudoephedrine
- Dihydroergotamine
- Diltiazem
- Dimenhydrinate
- Dipeptidyl Peptidase-4 Inhibitors
- Diphenhydramine
- Diphenhydramine; Hydrocodone; Phenylephrine
- Diphenhydramine; Ibuprofen
- Diphenhydramine; Naproxen
- Diphenhydramine; Phenylephrine
- Disopyramide
- Dolasetron
- Donepezil
- Donepezil; Memantine
- Dopamine
- Dorzolamide; Timolol
- Doxorubicin
- Doxylamine
- Doxylamine; Pyridoxine
- Dronabinol
- Dronedarone
- Droperidol
- Droxidopa
- Dulaglutide
- Duloxetine
- Dutasteride; Tamsulosin
- Dyphylline
- Dyphylline; Guaifenesin
- Efavirenz
- Efavirenz; Emtricitabine; Tenofovir
- Efavirenz; Lamivudine; Tenofovir Disoproxil Fumarate
- Elagolix
- Elagolix; Estradiol; Norethindrone acetate
- Elbasvir; Grazoprevir
- Eletriptan
- Elexacaftor; tezacaftor; ivacaftor
- Eliglustat
- Eltrombopag
- Eluxadoline
- Elvitegravir; Cobicistat; Emtricitabine; Tenofovir Alafenamide
- Elvitegravir; Cobicistat; Emtricitabine; Tenofovir Disoproxil Fumarate
- Empagliflozin
- Empagliflozin; Linagliptin
- Empagliflozin; Linagliptin; Metformin
- Empagliflozin; Metformin
- Enalapril, Enalaprilat
- Enalapril; Felodipine
- Enalapril; Hydrochlorothiazide, HCTZ
- Enflurane
- Entacapone
- Enzalutamide
- Ephedrine
- Epoprostenol
- Eprosartan; Hydrochlorothiazide, HCTZ
- Ergoloid Mesylates
- Ergonovine
- Ergot alkaloids
- Ergotamine
- Ertugliflozin
- Ertugliflozin; Metformin
- Ertugliflozin; Sitagliptin
- Erythromycin
- Erythromycin; Sulfisoxazole
- Escitalopram
- Esketamine
- Eslicarbazepine
- Esmolol
- Estazolam
- Eszopiclone
- Ethacrynic Acid
- Ethanol
- Etomidate
- Etravirine
- Everolimus
- Exenatide
- Ezogabine
- Fedratinib
- Felodipine
- Fentanyl
- Fesoterodine
- Flavoxate
- Flibanserin
- Fluconazole
- Fluoxetine
- Fluoxetine; Olanzapine
- Fluphenazine
- Flurazepam
- Flutamide
- Fluticasone; Salmeterol
- Fluticasone; Umeclidinium; Vilanterol
- Fluticasone; Vilanterol
- Fluvoxamine
- Formoterol
- Formoterol; Mometasone
- Fosamprenavir
- Fosinopril
- Fosinopril; Hydrochlorothiazide, HCTZ
- Fosphenytoin
- Fospropofol
- Fostamatinib
- Frovatriptan
- Furosemide
- Gabapentin
- Galantamine
- General anesthetics
- Gentamicin
- Ginger, Zingiber officinale
- Glimepiride; Pioglitazone
- Glimepiride; Rosiglitazone
- Glipizide; Metformin
- Glyburide; Metformin
- Glycopyrrolate
- Glycopyrrolate; Formoterol
- Granisetron
- grapefruit juice
- Green Tea
- Guaifenesin; Hydrocodone
- Guaifenesin; Hydrocodone; Pseudoephedrine
- Guaifenesin; Phenylephrine
- Guanabenz
- Guanfacine
- Halogenated Anesthetics
- Haloperidol
- Halothane
- Heparin
- Homatropine; Hydrocodone
- Hyaluronidase
- Hyaluronidase, Recombinant; Immune Globulin
- 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
- Hyoscyamine; Methenamine; Methylene Blue; Phenyl Salicylate; Sodium Biphosphate
- Ibuprofen; Oxycodone
- Idelalisib
- Iloperidone
- Iloprost
- Imatinib
- Incretin Mimetics
- Indacaterol
- Indacaterol; Glycopyrrolate
- Indapamide
- Indinavir
- Insulin Degludec; Liraglutide
- Insulin Glargine; Lixisenatide
- Insulins
- Iobenguane I 131
- Isavuconazonium
- Isocarboxazid
- Isoflurane
- Isoniazid, INH
- Isoniazid, INH; Pyrazinamide, PZA; Rifampin
- Isoniazid, INH; Rifampin
- Isradipine
- Istradefylline
- Itraconazole
- Ivacaftor
- Kanamycin
- Ketamine
- Ketoconazole
- Labetalol
- Lactulose
- Lapatinib
- Larotrectinib
- Lasmiditan
- Lefamulin
- Lemborexant
- Lesinurad
- Lesinurad; Allopurinol
- Letermovir
- Levalbuterol
- Levobetaxolol
- Levobunolol
- Levobupivacaine
- Levocetirizine
- Levomethadyl
- Levomilnacipran
- Levorphanol
- Levothyroxine
- Levothyroxine; Liothyronine (Porcine)
- Levothyroxine; Liothyronine (Synthetic)
- Lidocaine
- Lidocaine; Prilocaine
- Linagliptin; Metformin
- Lincosamides
- Linezolid
- Liothyronine
- Liraglutide
- Lisinopril
- Lithium
- Lixisenatide
- Lofexidine
- Loop diuretics
- Loperamide
- Loperamide; Simethicone
- Lopinavir; Ritonavir
- Loratadine
- Loratadine; Pseudoephedrine
- Lorazepam
- Lorlatinib
- Loxapine
- Lumacaftor; Ivacaftor
- Lumacaftor; Ivacaftor
- Lumateperone
- Lurasidone
- Macitentan
- Magnesium Citrate
- Magnesium Hydroxide
- Magnesium Salts
- Magnesium Sulfate; Potassium Sulfate; Sodium Sulfate
- Maprotiline
- Mecamylamine
- Meclizine
- Meglitinides
- Melatonin
- Mepenzolate
- Meperidine
- Meperidine; Promethazine
- Mephobarbital
- Mepivacaine
- Mepivacaine; Levonordefrin
- Meprobamate
- Metaproterenol
- Metaxalone
- Metformin
- Metformin; Pioglitazone
- Metformin; Repaglinide
- Metformin; Rosiglitazone
- Metformin; Saxagliptin
- Metformin; Sitagliptin
- Methadone
- Methamphetamine
- Methazolamide
- Methenamine; Sodium Acid Phosphate; Methylene Blue; Hyoscyamine
- Methocarbamol
- Methohexital
- Methscopolamine
- Methyclothiazide
- Methyldopa
- Methylergonovine
- Methysergide
- Metoclopramide
- Metolazone
- Metoprolol
- Metyrapone
- Metyrosine
- Midazolam
- Midodrine
- Mifepristone
- Miglitol
- Milnacipran
- Mineral Oil
- Minocycline
- Mirabegron
- Mirtazapine
- Mitotane
- Modafinil
- Moexipril
- Molindone
- Monoamine oxidase inhibitors
- Morphine
- Morphine; Naltrexone
- Nabilone
- Nadolol
- Nafcillin
- Nalbuphine
- Naloxone
- Naltrexone
- Naproxen; Sumatriptan
- Naratriptan
- Nebivolol
- Nebivolol; Valsartan
- Nefazodone
- Nelfinavir
- Nesiritide, BNP
- Netupitant, Fosnetupitant; Palonosetron
- Nevirapine
- Nicardipine
- Nicotine
- Nifedipine
- Nilotinib
- Nimodipine
- Nisoldipine
- Nitrates
- Nitroglycerin
- Norepinephrine
- Olanzapine
- Ombitasvir; Paritaprevir; Ritonavir
- Omeprazole; Amoxicillin; Rifabutin
- Ondansetron
- Opiate Agonists
- Oritavancin
- Orphenadrine
- Osilodrostat
- Oxazepam
- Oxcarbazepine
- Oxybutynin
- Oxycodone
- Oxymorphone
- Ozanimod
- Palbociclib
- Paliperidone
- Palonosetron
- Panobinostat
- Papaverine
- Paromomycin
- Paroxetine
- Pazopanib
- Peginterferon Alfa-2b
- Pegvisomant
- Penbutolol
- Pentazocine
- Pentazocine; Naloxone
- Pentobarbital
- Perampanel
- Pergolide
- Perindopril
- Perindopril; Amlodipine
- Perphenazine
- Perphenazine; Amitriptyline
- Phenelzine
- Phenobarbital
- Phentermine; Topiramate
- Phenylephrine
- Phenylephrine; Promethazine
- Phenytoin
- Pimozide
- Pindolol
- Pioglitazone
- Pirbuterol
- Pitolisant
- Plazomicin
- Polyethylene Glycol
- Polyethylene Glycol; Electrolytes
- Polyethylene Glycol; Electrolytes; Ascorbic Acid
- Polyethylene Glycol; Electrolytes; Bisacodyl
- Posaconazole
- Potassium-sparing diuretics
- Pramipexole
- Pramlintide
- Prasugrel
- Pregabalin
- Prilocaine
- Prilocaine; Epinephrine
- Primidone
- Procaine
- Procarbazine
- Prochlorperazine
- Promethazine
- Propafenone
- Propantheline
- Propofol
- Propoxyphene
- Propranolol
- Quazepam
- Quetiapine
- Quinapril
- Quinidine
- Quinine
- Racepinephrine
- Ramelteon
- Ramipril
- Ranolazine
- Rasagiline
- Remifentanil
- Reserpine
- Ribociclib
- Ribociclib; Letrozole
- Rifabutin
- Rifampin
- Rifapentine
- Rifaximin
- Riociguat
- Risperidone
- Ritonavir
- Rituximab; Hyaluronidase
- Rivastigmine
- Rizatriptan
- Rolapitant
- Ropinirole
- Ropivacaine
- Rosiglitazone
- Rotigotine
- Rucaparib
- Safinamide
- Salmeterol
- Saquinavir
- Scopolamine
- Secobarbital
- Selegiline
- Selexipag
- Selpercatinib
- Semaglutide
- Serotonin-Receptor Agonists
- Serotonin-Receptor Antagonists
- Sertraline
- Sevoflurane
- SGLT2 Inhibitors
- Sibutramine
- Sildenafil
- Simeprevir
- Sincalide
- Skeletal Muscle Relaxants
- Sodium Iodide
- Sodium Oxybate
- Solifenacin
- Solriamfetol
- Sorbitol
- Sotalol
- Spironolactone
- St. John’s Wort, Hypericum perforatum
- Streptogramins
- Streptomycin
- Sufentanil
- Sulfonylureas
- Sumatriptan
- Suvorexant
- Tacrine
- Tamsulosin
- Tapentadol
- Tasimelteon
- Tazemetostat
- Telaprevir
- Telithromycin
- Telotristat Ethyl
- Temazepam
- Terbinafine
- Terbutaline
- Tetrabenazine
- Tetracaine
- Tezacaftor; Ivacaftor
- Thalidomide
- Theophylline, Aminophylline
- Thiazide diuretics
- Thiazolidinediones
- Thiopental
- Thioridazine
- Thiothixene
- Thyroid hormones
- Ticagrelor
- Timolol
- Tipranavir
- Tizanidine
- Tobramycin
- Tolcapone
- Tolterodine
- Topiramate
- Torsemide
- Tramadol
- Trandolapril
- Trandolapril; Verapamil
- Tranylcypromine
- Trastuzumab; Hyaluronidase
- Trazodone
- Treprostinil
- Triamterene
- Triazolam
- Tricyclic antidepressants
- Trifluoperazine
- Trihexyphenidyl
- Trimethobenzamide
- Triprolidine
- Trospium
- Tucatinib
- Umeclidinium; Vilanterol
- Valerian, Valeriana officinalis
- Valproic Acid, Divalproex Sodium
- Vasodilators
- Vasopressors
- Vemurafenib
- Venlafaxine
- Verapamil
- Vigabatrin
- Vilazodone
- Voriconazole
- Vortioxetine
- Voxelotor
- Yohimbine
- Zafirlukast
- Zaleplon
- Ziconotide
- Ziprasidone
- Zolmitriptan
- Zolpidem