Doramectin

Doramectin, sold under the brand name Dectomax among others, is a veterinary medication approved by the US Food and Drug Administration (FDA) for the treatment of parasites such as gastrointestinal roundworms, lungworms, eyeworms, grubs, sucking lice, and mange mites in cattle.[1][2] It is available as a generic medication.[3] It is available as a combination with levamisole under the brand name Valcor.[4]

Doramectin
Clinical data
Trade namesDectomax, others
Other names
  • 25-cyclohexylavermectin B1,
  • 25-cyclohexyl-25-de(l-methylpropyl)avermectin B1a,
  • 25-cyclohexyl-5-O-demethyl-25-de(l-methylpropyl)avermectin A1a
AHFS/Drugs.comInternational Drug Names
License data
Routes of
administration		Subcutaneous, intramuscular, topical
ATCvet code
Legal status
Legal status
Identifiers
  • (1'R,2S,4'S,5S,6R,8'R,10'E,12'R,13'S,14'E,20'R,21'R,24'S)-6-cyclohexyl-21',24'-dihydroxy-12'-{[(2R,4S,5S,6S)-5-{[(2S,4S,5S,6S)-5-hydroxy-4-methoxy-6-methyloxan-2-yl]oxy}-4-methoxy-6-methyloxan-2-yl]oxy}-5,11',13',22'-tetramethyl-5,6-dihydro-3',7',19'-trioxaspiro[pyran-2,6'-tetracyclo[15.6.1.14,8.020,24]pentacosane]-10',14',16',22'-tetraen-2'-one
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
CompTox Dashboard (EPA)
ECHA InfoCard100.123.125
Chemical and physical data
FormulaC50H74O14
Molar mass899.128 g·mol−1
  • InChI=1S/C50H74O14/c1-27-13-12-16-34-26-57-47-42(51)30(4)21-37(50(34,47)54)48(53)60-36-22-35(63-49(25-36)20-19-29(3)45(64-49)33-14-10-9-11-15-33)18-17-28(2)44(27)61-41-24-39(56-8)46(32(6)59-41)62-40-23-38(55-7)43(52)31(5)58-40/h12-13,16-17,19-21,27,29,31-33,35-47,51-52,54H,9-11,14-15,18,22-26H2,1-8H3/b13-12+,28-17+,34-16+/t27-,29-,31-,32-,35+,36-,37-,38-,39-,40-,41-,42+,43-,44-,45-,46-,47+,49+,50+/m0/s1 checkY
  • Key:QLFZZSKTJWDQOS-YDBLARSUSA-N checkY
  (verify)

It is used for the treatment and control of internal parasitosis (gastrointestinal and pulmonary nematodes), ticks and mange (and other ectoparasites). Doramectin is a derivative of avermectin. Similarly to other drugs of this family, it is produced by fermentation by selected strains of Streptomyces avermitilis followed by chemical modification.[1][2][5] Its spectrum includes: Haemonchus, Ostertagia, Trichostrongylus, Cooperia, and Oesophagostomum species and Dictyocaulus viviparus, Dermatobia hominis, Boophilus microplus, and Psoroptes bovis, among many other internal and external parasites. It is available as an injection and as a topical solution.[1][2]

Society and culture

Brand names

Doramectin is marketed in other countries as Doramec L.A. for cattle, sheep, and swine.

Doramectin is available for horses as an oral, flavored, bioadhesive gel under the name Doraquest L.A. Oral Gel. It can be used to control and treat internal parasites as roundworms, lungworms and some external parasites.

References
  1. "Dectomax- doramectin injection, solution". DailyMed. 13 September 2022. Retrieved 25 January 2023.
  2. "Dectomax Pour-On- doramectin solution". DailyMed. 5 August 2022. Retrieved 25 January 2023.
  3. "FDA Approves First Generic Doramectin for Use in Cattle". U.S. Food and Drug Administration (FDA). 11 January 2023. Retrieved 25 January 2023.
  4. "Animal Drugs @ FDA". animaldrugsatfda.fda.gov. Retrieved 25 January 2023.
  5. Goudie AC, Evans NA, Gration KA, Bishop BF, Gibson SP, Holdom KS, et al. (July 1993). "Doramectin--a potent novel endectocide". Veterinary Parasitology. 49 (1): 5–15. doi:10.1016/0304-4017(93)90218-c. PMID 8236738.
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