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Tezruly
terazosin
Adult Dosing .
Dosage forms: SOL: 1 mg per mL
HTN
- [1-5 mg PO qhs]
- Start: 1 mg PO qhs, titrate slowly; Max: 20 mg/day; Info: may divide doses bid; restart initial titration if tx interrupted for several days or more
benign prostatic hypertrophy
- [1-10 mg PO qhs]
- Start: 1 mg PO qhs, titrate slowly; Max: 20 mg/day; Info: if no response after 4-6wk on 10 mg PO qhs, may incr. dose to 20 mg PO qhs; restart initial titration if tx interrupted for several days or more
nephrolithiasis (off-label)
- [2-5 mg PO qhs]
renal dosing
- [no adjustment]
- renal impairment: no adjustment
- HD/PD: no adjustment; no supplement
hepatic dosing
- [not defined]
Peds Dosing .
Peds dosing is currently unavailable or not applicable for this drug.
Contraindications / Cautions .
- hypersensitivity to drug or ingredient
- caution: elderly pts
- caution: cataract surgery
Drug Interactions .
Overview
terazosin
alpha-1 blocker
- antihypertensive agent
- hypotensive effects
Contraindicated
- isocarboxazid
Avoid/Use Alternative
- aldesleukin
- alfuzosin
- aripiprazole lauroxil
- doxazosin
- iloperidone
- lofexidine
- prazosin
- silodosin
- tadalafil
- tamsulosin
Monitor/Modify Tx
- abiraterone acetate
- acebutolol
- albuterol
- albuterol inhaled
- alfentanil
- aliskiren
- almotriptan
- amantadine
- amifostine
- amiloride
- amitriptyline
- amlodipine
- amoxapine
- amphetamine
- apomorphine
- apraclonidine ophthalmic
- aprocitentan
- arformoterol inhaled
- aripiprazole bimonthly injection
- aripiprazole monthly injection
- aripiprazole oral
- armodafinil
- articaine
- asciminib
- asenapine
- aspirin
- atenolol
- atogepant
- atomoxetine
- atropine ophthalmic
- avanafil
- axitinib
- azilsartan medoxomil
- benazepril
- benzphetamine
- berberine
- betamethasone
- betaxolol
- betaxolol ophthalmic
- bethanechol
- bevacizumab
- bexagliflozin
- bismuth subsalicylate
- bisoprolol
- bortezomib
- brexpiprazole
- brigatinib
- brimonidine ophthalmic
- brimonidine topical
- bromocriptine
- budesonide
- bumetanide
- bupivacaine
- bupivacaine liposomal
- buprenorphine
- bupropion
- butorphanol
- cabergoline
- cabozantinib
- caffeine
- caffeine citrate
- canagliflozin
- candesartan cilexetil
- cannabis
- captopril
- carfilzomib
- cariprazine
- carteolol ophthalmic
- carvedilol
- celecoxib
- chloroprocaine
- chlorothiazide
- chlorpromazine
- chlorthalidone
- cilostazol
- clevidipine
- clofarabine
- clomipramine
- clonidine
- clozapine
- cocaine
- codeine
- coenzyme Q-10
- copanlisib
- corticotropin
- cortisone
- cyclosporine
- danazol
- dapagliflozin
- darbepoetin alfa
- deflazacort
- denileukin diftitox
- desflurane
- desipramine
- desmopressin
- desvenlafaxine
- dexamethasone
- dexmedetomidine
- dexmedetomidine injection
- dexmethylphenidate
- dextroamphetamine
- diazoxide
- diclofenac
- diclofenac topical
- diethylpropion
- diflunisal
- dihydrocodeine
- dihydroergotamine
- diltiazem
- dinutuximab
- dipyridamole
- dobutamine
- dopamine
- doxapram
- doxepin
- dronabinol
- droxidopa
- duloxetine
- eletriptan
- empagliflozin
- enalapril
- enalaprilat
- entacapone
- entrectinib
- enzalutamide
- ephedra
- ephedrine injection
- ephedrine oral
- epinephrine
- epinephrine inhaled
- eplerenone
- epoetin alfa
- epoprostenol
- eptinezumab
- erenumab
- ergotamine
- ertugliflozin
- esketamine
- esmolol
- estetrol (contraceptive)
- estradiol (contraceptive)
- ethacrynic acid
- ethanol
- ethinyl estradiol (contraceptive)
- etodolac
- etrasimod
- felodipine
- fenfluramine
- fenoldopam
- fenoprofen
- fentanyl
- ferumoxytol
- fingolimod
- flaxseed
- flibanserin
- fludrocortisone
- fluphenazine
- flurbiprofen
- formoterol inhaled
- fosinopril
- foslevodopa
- fostamatinib
- fremanezumab
- frovatriptan
- fruquintinib
- furosemide
- galcanezumab
- garlic
- gilteritinib
- guanfacine
- haloperidol
- hoodia
- hydralazine
- hydrochlorothiazide
- hydrocodone
- hydrocortisone
- hydromorphone
- ibrutinib
- ibuprofen
- iloprost
- iloprost inhaled
- imipramine
- indapamide
- indomethacin
- irbesartan
- iron sucrose
- isoflurane
- isoproterenol
- isosorbide dinitrate
- isosorbide mononitrate
- isradipine
- ketamine
- ketoprofen
- ketorolac
- labetalol
- landiolol
- lanreotide
- leflunomide
- lenvatinib
- levalbuterol inhaled
- levobunolol ophthalmic
- levodopa
- levomilnacipran
- levorphanol
- levothyroxine
- licorice
- lidocaine
- liothyronine
- lisdexamfetamine
- lisinopril
- lorlatinib
- losartan
- loxapine
- lubiprostone
- lumacaftor/ivacaftor
- lumateperone
- lurasidone
- luspatercept
- magnesium salicylate
- magnesium sulfate
- maraviroc
- meclofenamate
- mefenamic acid
- meloxicam
- meperidine
- mepivacaine
- methadone
- methamphetamine
- methohexital
- methoxy polyethylene glycol-epoetin beta
- methyldopa
- methylene blue injection
- methylergonovine
- methylphenidate
- methylprednisolone
- methyltestosterone
- metoclopramide
- metolazone
- metoprolol
- midazolam
- midodrine
- milnacipran
- milrinone
- minoxidil
- mirabegron
- mirtazapine
- modafinil
- moexipril
- molindone
- morphine
- nabumetone
- nadolol
- nalbuphine
- naphazoline ophthalmic
- naproxen
- naratriptan
- nattokinase
- naxitamab
- nebivolol
- niacin (vitamin B3)
- nicardipine
- nifedipine
- nimodipine
- niraparib
- nisoldipine
- nitric oxide
- nitrite
- nitroglycerin
- nitroprusside
- norepinephrine
- nortriptyline
- obinutuzumab
- olanzapine
- oliceridine
- olmesartan medoxomil
- olodaterol inhaled
- opicapone
- opium
- osilodrostat
- oxaprozin
- oxazepam
- oxycodone
- oxymetazoline nasal
- oxymetazoline ophthalmic
- oxymetazoline topical
- oxymorphone
- oxytocin
- ozanimod
- paliperidone
- palopegteriparatide
- pazopanib
- pentamidine
- pentazocine
- pentobarbital
- pentoxifylline
- perindopril
- perphenazine
- pexidartinib
- phendimetrazine
- phenelzine
- phenobarbital
- phenoxybenzamine
- phentermine
- phentolamine
- phenylephrine
- phenylephrine injection
- phenylephrine nasal
- phenylephrine ophthalmic
- phenylephrine rectal
- pindolol
- piroxicam
- ponatinib
- ponesimod
- pralsetinib
- pramipexole
- prednisolone
- prednisone
- procarbazine
- prochlorperazine
- promethazine
- propafenone
- propofol
- propranolol
- protriptyline
- pseudoephedrine
- quetiapine
- quinapril
- ramipril
- ramucirumab
- rasagiline
- regorafenib
- remifentanil
- remimazolam
- rimegepant
- riociguat
- ripretinib
- risperidone
- rizatriptan
- ropinirole
- ropivacaine
- rotigotine transdermal
- sacubitril
- safinamide
- salmeterol inhaled
- salsalate
- selegiline
- selegiline transdermal
- selpercatinib
- sevoflurane
- sildenafil
- siponimod
- sodium ferric gluconate complex
- sorafenib
- sotagliflozin
- sotalol
- sparsentan
- spironolactone
- sufentanil
- sulindac
- sumatriptan
- sunitinib
- tacrolimus
- tagraxofusp
- tapentadol
- taurine
- telmisartan
- terbutaline
- teriflunomide
- testosterone
- tetrahydrozoline ophthalmic
- thalidomide
- thioridazine
- thiothixene
- thyroid
- timolol
- timolol ophthalmic
- tivozanib
- tizanidine
- tolcapone
- tolmetin
- torsemide
- tramadol
- trametinib
- trandolapril
- tranylcypromine
- trazodone
- treprostinil
- triamcinolone
- triamterene
- trifluoperazine
- trimipramine
- ubrogepant
- vadadustat
- valsartan
- vamorolone
- vandetanib
- vardenafil
- vasopressin
- venlafaxine
- verapamil
- vilanterol inhaled
- viloxazine
- voclosporin
- vosoritide
- yohimbe
- zavegepant
- ziprasidone
- ziv-aflibercept
- zolmitriptan
Adverse Reactions .
Serious Reactions
- hypotension, first-dose
- syncope
- SVT
- atrial fibrillation
- priapism
- thrombocytopenia
- anaphylaxis
- intraoperative floppy iris syndrome
Common Reactions
- dizziness
- headache
- asthenia
- nasal congestion
- peripheral edema
- somnolence
- nausea
- pain
- dyspnea
- paresthesia
- sinusitis
- nervousness
- tachycardia
- palpitations
- hypotension, orthostatic
- blurred vision
Safety/Monitoring .
Monitoring Parameters
BP
Look/Sound-Alike Drug Names
terazosin confused with: doxazosin; prazosin; tamsulosin; terbutaline; traZODone
Pregnancy/Lactation .
Pregnancy
Clinical Summary
weigh risk/benefit during pregnancy; no human data available; no known risk of teratogenicity based on animal data at up to 280x MRHD
Lactation
Clinical Summary
weigh risk/benefit while breastfeeding; no human data available to assess risk of infant harm or effects on milk production
Pharmacology .
Metabolism: liver; CYP450: unknown
Excretion: feces 60% (20% unchanged), urine 40% (10% unchanged); Half-life: 13h
Subclass: Alpha Blockers, Peripheral ; Benign Prostatic Hyperplasia (BPH)
Mechanism of Action
antagonizes peripheral alpha-1 adrenergic receptors
Formulary .
No Formulary Selected
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