Venlafaxine
Also called Efectin, Efexor, Elafax and Kanghong.
An SNRI antidepressant sold as Effexor, used for depression, anxiety and panic disorder. Venlafaxine (C17H27NO2, 277 g/mol) is a serotonin-norepinephrine reuptake inhibitor dispensed on prescription.
Sources and notes
- The introductionfrom sourceMoleculeFinder curated
- Other namesfrom sourcePubChem / Wikidata
- Formula and weightcomputedPubChem
- 2D drawingcomputedPubChem structure, drawn by RDKit
- 3D modelfrom sourcePubChem 3D conformerLoaded after the page has painted, and on a phone only when you ask for it; the 2D drawing shows until it arrives.
Where you encounter it
Dispensed on prescription, not sold on a shelf. Venlafaxine on the product labels we hold.
Medicines
Every product and list we hold
Sources and notes
- The product labels and their strengthsfrom sourceDailyMed (FDA label)Each label lists the molecule as an ingredient, and an active ingredient at the strength shown.
- How it gets therefrom sourceMoleculeFinder curatedEach mark is set by hand on our lists, never inferred; a label's ingredient is added by the maker. A row with no mark data says Not marked.
- The line abovefrom sourceMoleculeFinder curatedFrom the group the molecule belongs to.
Explore its structure
Choose a part to light it up.
A nitrogen bonded to three carbons, with no hydrogen of its own. Its spare pair of electrons can still pick up a hydrogen ion, so a tertiary amine is a base.
From: standard chemistry.
An O-H on a carbon that is not part of an aromatic ring, the group that makes a molecule an alcohol. It both gives and accepts hydrogen bonds, which helps the molecule mix with water.
From: standard chemistry.
An oxygen bridging two carbons, written C-O-C. It accepts hydrogen bonds but has no hydrogen to give, and it is slow to react.
From: standard chemistry.
Sources and notes
- The drawingcomputedPubChem structure, drawn by RDKitThe page's one shipped drawing, with the chosen part lit in amber under it.
- The partscomputedFound by ruleEach part is found by a chemical pattern, never picked by hand atom by atom; its words say where they come from.
Compare a related molecule
Duloxetine
Venlafaxine
Duloxetine and venlafaxine are both SNRIs, but venlafaxine acts mostly on serotonin at lower amounts while duloxetine hits both transmitters from the start.
Duloxetine vs Venlafaxine, side by sideSources and notes
- The sentencefrom sourceMoleculeFinder comparison notesThe pair's answer line.
- The two drawingscomputedPubChem structures, drawn by RDKitThe two drawings side by side.
Properties and sources
Calculated by PubChem
- Molecular formula
- C17H27NO2
- Molecular weight
- 277.4 g/mol
- XLogP3octanol/water, log units
- 2.9
- Polar surface areatopological
- 32.7 Ų
- H-bond donors
- 1
- H-bond acceptors
- 3
- Rotatable bonds
- 5
- Complexity
- 279
Reported Hazard label (GHS), ECHA via PubChem
Danger Irritant pictogram (GHS07), Health hazard pictogram (GHS08) and Environmental pictogram (GHS09); hazard statements H302, H319, H360, H362, H411
Reported Licence
The US Food and Drug Administration licenses Venlafaxine for human use (NDA 020699, authorized October 20, 1997), as Effexor XR. Drugs@FDA
Groups it belongs to
- Category
- Prescription medicine
- Family
- SNRIs
- Elements
- Nitrogen
- Hazard classes
- Irritant, Health hazard, Environmental hazard, GHS Danger
CN(C)CC(C1=CC=C(C=C1)OC)C2(CCCCC2)OPubChem CID 5656 · Wikidata Q898407 · InChIKey PNVNVHUZROJLTJ-UHFFFAOYSA-N · Data refreshed
Questions
- What is Venlafaxine?
- An SNRI antidepressant sold as Effexor, used for depression, anxiety and panic disorder. Venlafaxine (C17H27NO2, 277 g/mol) is a serotonin-norepinephrine reuptake inhibitor dispensed on prescription.
- How toxic is Venlafaxine?
- Its GHS hazard label carries the signal word Danger and the hazard pictograms Irritant, Health hazard and Environmental. from source
- What kind of molecule is Venlafaxine?
- Venlafaxine has the formula C17H27NO2 and a molecular weight of 277.4 g/mol. MoleculeFinder files it under SNRIs, in the prescription medicine group. from sourcefrom sourcefrom sourcefrom source
- Who licenses Venlafaxine as a medicine?
- The US Food and Drug Administration licenses Venlafaxine for human use (NDA 020699, authorized October 20, 1997), as Effexor XR. from source
Sources and notes
- Calculated valuescomputedPubChemComputed from the structure, so no laboratory conditions apply; complexity is PubChem's own structural score.
- Hazard labelfrom sourceECHA via PubChemThe label combines these classifications.
- ECHAfrom sourceAttributionSource: European Chemicals Agency, echa.europa.eu.
- Licencefrom sourceDrugs@FDARead 2026-10-21.
- Data refreshedfrom sourceMoleculeFinder2026-11-09
Keep exploring
Sources and notes
- Compared side by sidefrom sourceMoleculeFinder comparison notesA molecule we compare it with on its own page.
- The same kind of moleculefrom sourceMoleculeFinder curated groupsA structural neighbour in the same family or type group; the line names the group in its own words.
- Similar in shapecomputedRDKit Morgan/TanimotoNeighbours by structural fingerprint; the sentence names the chemical groups the two share.
- The drawingscomputedPubChem structures, drawn by RDKit