Pharmaceutical substances, dermatological, indicative concentrations

Definition
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When prescribing external drugs (see below) , it is of primary importance to adhere to the recommended concentrations of the drug to be incorporated. The commission "Magistral Prescriptions" of the Deutsche Dermatologische Gesellschaft (German Dermatological Society) has listed therapeutic reference concentrations for the following listed medicinal products. The physician should indicate the exceeding of these concentrations by a special note. If such a note is missing, the pharmacy should evaluate the concentration as ambiguity and consult before preparation.

Literature
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NRF (2003) 1.6. upper guide concentrations of dermatological drugs. DAC, New Prescription Form (NRF) 1.6. 12-13

Tables
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Active substance	Upper guideline concentration
Betamethasone-17-valerate	0,15%
Capsaicin (also as capsaicinoids in the form of cayenne pepper extract)	0,05%
Clioquinol	3,0%
Clobetasol propionate	0,05%
Dexamethasone or dexamethasone acetate	0,05%
Dithranol (first prescription at the start of therapy)	0,1%
Dithranol (subsequent prescription)	3%
Estradiol or estradiobenzoate	0,015%
estriol	0,1%
Fuchsin on large areas of damaged skin	0,1%
Fuchsin on small areas for brushing	0,5%
Gentamicin sulphate*	0,2%
Hydroquinone	3,0%
hydrocortisone	1,0%
Potassium permanganate (ready-to-use solution)	0,001%
Methoxsalen(ammoidin)	0,15%
Methylrosanilinium chloride (= gentian violet) on large areas of damaged skin	0,1%
Methylrosanilinium chlor ide on small areas for brushing	0,5%
Metronidazole	3,0%
Podophyllin	15,0%
Salicylic acid (large area)	3,0%
Salicylic acid (small areas in ointments or patches)	60%
Coal tar(Pix lithanthracis) - Note: None of the active ingredients for coal tar are currently available as a formulation substance, so the preparations cannot be made.	10,0
Coal tar solution(Liquor carbonis detergens) - Note: None of the active ingredients for coal tar are currently available as a formulation substance, so the preparations cannot be made.	20,0
Testosterone/testosterone propionate	2,0%
tretinoin	0,1%
Triamcinolone acetonide	0,1%
triclosan	3,0%
* Gentamicin is a reserve antibiotic for systemic use and is not recommended for formulations for cutaneous use. The NRF therefore does not contain any provisions for topical preparations containing gentamicin.