Eugenol is responsible for the therapeutic actions of clove oil. It's commonly used as a local analgesic and antiseptic.
Eugenol also acts as a potent anti-platelet medicine. One test showed it inhibited platelet aggregation more potently than aspirin. In another test its anti-platelet activity was found to be equal to that of aspirin.
Eugenol is an allylbenzene and can form alkaloids in vivo under certain situations. This is also proven for elemicin, safrole, myristicin and other closely related allylbenzenes (see the article on Oilahuasca Activation for more details).
The metabolism of eugenol was investigated in male and female healthy volunteers. Eugenol was rapidly absorbed and metabolized after oral administration and was almost completely excreted in the urine within 24 hours. Unmetabolized eugenol excreted in urine amounted to less than 0.1% of the dose used.
The following metabolites were detected in man after oral use:
- 3'-Hydroxyeugenol (needs further verification) 
- Vanillactic Acid (needs further verification) 
- 4-hydroxy-3-methoxyphenyl-propane 
- cis-isoeugenol 
- trans-isoeugenol 
- 3-(4-hydroxy-3-methoxyphenyl)-propylene-1,2-oxide 
- 3-(4-hydroxy-3-methoxyphenyl)-propane-1,2-diol 
- 3-(4-hydroxy-3-methoxyphenyl)-propionic acid 
PubChem Compound ID: 3314
Molecular Weight: 164.20108 [g/mol]
Molecular Formula: C10H12O2
Boiling Point: 253.2 deg C at 760 mm Hg
Melting Point: -9.2 to -9.1 deg C
Solubility: Soluble in glacial acetic acid, 1 mL in 2 mL 70% alcohol, aqueous fixed alkali hydroxide solutions; miscible with alcohol, chloroform, ether, oils
IUPAC Name: 2-methoxy-4-prop-2-enylphenol
Canonical SMILES: COC1=C(C=CC(=C1)CC=C)O