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Lymecycline
Systematic (IUPAC) name
	2-(amino-hydroxy-methylidene)- 7-chloro-4-dimethylamino- 6,10,11,12a- tetrahydroxy-6- methyl- 4,4a,5,5a-tetrahydrotetracene-1 ,3,12-trione; OR; (4R,4aR,5aR,6R,12aR)- 2- (amino(hydroxy)methylene)- 7- chloro- 4- (dimethylamino)- 6,10,11,12a- tetrahydroxy- 6- methyl- 4a,5,5a,6- tetrahydrotetracene- 1,3,12(2H,4H,12aH)- trione
Identifiers
CAS number	992-21-2
ATC code	J01AA04
PubChem	23649
DrugBank	APRD00565
Chemical data
Formula	C22H23ClN2O8
Mol. mass	478.879
Pharmacokinetic data
Bioavailability	100% (oral)
Metabolism	?
Half life	?
Excretion	renal
Therapeutic considerations
Pregnancy cat.	? (Aust)
Legal status	Schedule 4 (Aust)
Routes	oral

Lymecycline is a tetracycline broad-spectrum antibiotic marketed by the pharmeceutical company Galderma[1]. It is approximately 5000 times more soluble than tetracycline base and is unique amongst tetracyclines in that it is absorbed by the "active transport" process across the intestinal wall, making use of the same fast and efficient mechanism by which carbohydrates are absorbed.^[2]

The greater absorption of Lymecycline allows for lower dosages to be used; the standard dose of 408 mg is equivalent to 300 mg tetracycline base, and in its action to 500 mg tetracycline hydrochloride. Lymecycline, unlike tetracycline hydrochloride, is soluble at all physiological pH values.

[edit] History

Lymecycline was released onto the pharmaceutical market in 1963.

[edit] Indications

Lymecycline, like other Tetracyclines, is used to treat a range of infections. (see Tetracycline antibiotics group). Its better absorption profile makes it preferable to tetracycline for moderately severe acne and typically prescribed for 8 weeks at a time, but alternatives should be sought if no improvement occurs by 3 months. It is also used to treat in the case of acne being present.^{[clarification needed]}^[3]

[edit] Dosage

The standard dose is 408 mg (one capsule) twelve hourly by mouth. In particularly severe infections this dose may be increased to 1.224-1.632 mg (three or four capsules) daily.

The 408 mg once daily dosage for acne aids good drug compliance.^{[clarification needed]}