This information is for educational purposes only. It is not intended as medical advice. Always consult a qualified healthcare professional.
OTC
NALTREXONE HYDROCHLORIDE
50 mg/1, Tablet, film coated
INN: NALTREXONE HYDROCHLORIDE
Data updated: 2026-04-25
Available in:
🇩🇪🇬🇧
Form
TABLET, FILM COATED
Dosage
50 mg/1
Route
ORAL
Storage
—
About This Product
Manufacturer
User Reviews
Reviews reflect personal experiences and are not medical advice. Always consult your doctor.
NuCare Pharmaceuticals Inc.
ATC Code
N07BB04
Source
OPENFDA_NDC
USDailyMed:Naltrexone
AU:B3
N07BB04(WHO)
AU:S4(Prescription only)BR:Class C1(Other controlled substances)CA:℞-onlyUK:POM(Prescription only)US:℞-onlyIn general: ℞ (Prescription only)
(4R,4aS,7aR,12bS)-3-(cyclopropylmethyl)-4a,9-dihydroxy-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline-7-one
16590-41-3Y
5360515
1639
DB00704Y
4514524Y
5S6W795CQM
D05113Y
CHEBI:7465Y
ChEMBL19019Y
DTXSID4046313
Interactive image
O=C4[C@@H]5Oc1c2c(ccc1O)C[C@H]3N(CC[C@]25[C@@]3(O)CC4)CC6CC6
InChI=1S/C20H23NO4/c22-13-4-3-12-9-15-20(24)6-5-14(23)18-19(20,16(12)17(13)25-18)7-8-21(15)10-11-1-2-11/h3-4,11,15,18,22,24H,1-2,5-10H2/t15-,18+,19+,20-/m1/s1YKey:DQCKKXVULJGBQN-XFWGSAIBSA-NY
Naltrexone, sold under the brand nameReviaamong others, is amedicationprimarily used to managealcohol useoropioid use disorderby reducingcravingsand feelings ofeuphoriaassociated withsubstance use disorder.It has also been found effective in the treatment of otheraddictionsand may be used for themoff-label.The combinationnaltrexone/bupropionis used to treatobesity.
Naltrexone is anopioid antagonistand works by blocking the effects ofopioids, including both opioid drugs as well asopioids naturally produced in the brain.It is takenorallyor byinjection into a muscle.Effects begin within 30 minutes,though a decreased desire for opioids may take a few weeks to occur.
Side effects may includetrouble sleeping,anxiety,nausea, andheadaches.In those still on opioids,opioid withdrawalmay occur.Use is not recommended in people withliver failure.It is unclear if use is safe duringpregnancy.
Naltrexone was first made in 1965 and was approved for medical use in the United States in 1984.It is on theWorld Health Organization's List of Essential Medicines.In 2021, it was the 254th most commonly prescribed medication in the United States, with more than 1million prescriptions.
