Peringatan Keamanan

Oral LD50 and intraperitoneal LD50 in mouse were 1310 mg/kg and 3000 mg/kg, respectively L2805. Subcutaneous LD50 in rat was 70 mg/kg L2805.

The main target organs of camphor are the CNS and kidneys. Camphor is a CNS stimulant that may cause convulsions, depression, apnea, asystole, gastric irritation, colic, nausea, vomiting, diarrhea, anxiety, excitement, delirium, and severe post-convulsive coma L2805. Camphor is also irritating to the eyes, skin and mucous membranes following dermal contact of high doses. Gastrointestinal irritation and CNS depression may occur at doses over 10 mg/kg while as little as 1 g has been fatal in infants, and death has been reported with doses of 50 mg/kg or more L2805. There is no known antidote for camphor intoxication, thus gastrointestinal decontamination via activated charcoal is generally recommended for oral camphor overdose L2805.

(S)-camphor

DB11345

small molecule experimental

Deskripsi

(S)-camphor, or L(-)-Camphor, is a stereoisomer of DB01744, a bicyclic monoterpene known to potentiate both heat and cold sensations A33087. (S)-camphor is not the naturally-occurring stereoisomer but displays similar TRPV channel affinity and current inhibition A33086. DB01744 is isolated from the wood of the camphor laurel tree, Cinnamomum camphora, and had a long history of medicinal use. It has been used as a nasal decongestant and cough suppressant, and has been topically applied due to its antipruritic, analgesic, and counterirritant properties A33086. Camphor is a major active ingredient in over-the-counter balms and liniments supplied as topical analgesics by causing sensitization to heat and coolness to relieve minor muscle and joint pain A33086.

Struktur Molekul 2D

Berat 152.2334
Wujud solid

Peta Jejaring Molekuler
Legenda: ObatTargetGenEnzim(Panah → menunjukkan arah efek / relasi)TransporterCarrier

Profil Farmakokinetik

Waktu Paruh (Half-Life) Following oral ingestion of 200 mg camphor, the half life was 167 minutes [L2805].
Volume Distribusi Volume of distribution of camphor is 2 to 4 L/kg [L2805]. Camphor and its metabolites are relatively fat-soluble thus may accumulate in adipose and other tissues [L2805]. Camphor ingested by mothers was present in amnionic fluid, cord and fetal blood and fetal brain, liver and kidneys [L2805].
Klirens (Clearance) No pharmacokinetic data available.

Absorpsi

Absorption of camphor in the mucous membranes and the gastrointestinal tract is rapid, and peak concentration following oral ingestion occurs within 5 to 90 minutes L2805.

Metabolisme

(S)-camphor undergoes rapid oxidation to 5-exo-hydroxyfenchone, which is predominantly mediated by human liver microsomal cytochrome (P450). CYP2A6 is the major enzyme involved in the hydroxylation of (-)-camphor by human liver microsomes A33094.

Rute Eliminasi

Camphor undergoes renal excretion L2805.

Interaksi Obat

0 Data
Tidak ada data.

Target Protein

Transient receptor potential cation channel subfamily V member 1 TRPV1
Transient receptor potential cation channel subfamily V member 3 TRPV3
Transient receptor potential cation channel subfamily A member 1 TRPA1
Transient receptor potential cation channel subfamily M member 8 TRPM8

Referensi & Sumber

Artikel (PubMed)
  • PMID: 16192383
    Xu H, Blair NT, Clapham DE: Camphor activates and strongly desensitizes the transient receptor potential vanilloid subtype 1 channel in a vanilloid-independent mechanism. J Neurosci. 2005 Sep 28;25(39):8924-37. doi: 10.1523/JNEUROSCI.2574-05.2005.
  • PMID: 23828908
    Selescu T, Ciobanu AC, Dobre C, Reid G, Babes A: Camphor activates and sensitizes transient receptor potential melastatin 8 (TRPM8) to cooling and icilin. Chem Senses. 2013 Sep;38(7):563-75. doi: 10.1093/chemse/bjt027. Epub 2013 Jul 4.
  • PMID: 23625413
    Sherkheli MA, Vogt-Eisele AK, Weber K, Hatt H: Camphor modulates TRPV3 cation channels activity by interacting with critical pore-region cysteine residues. Pak J Pharm Sci. 2013 May;26(3):431-8.
  • PMID: 17268056
    Gyoubu K, Miyazawa M: In vitro metabolism of (-)-camphor using human liver microsomes and CYP2A6. Biol Pharm Bull. 2007 Feb;30(2):230-3.

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Sekuens Gen/Protein (FASTA)

Sekuens dimuat saat dibutuhkan agar halaman tetap ringan.
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