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This is the list of Schedule II drugs as defined by the United StatesControlled Substances Act.[1]The following findings are required for drugs to be placed in this schedule:[2]

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  1. The drug or other substance has a high potential for abuse.
  2. The drug or other substance has a currently accepted medical use in treatment in the United States or a currently accepted medical use with severe restrictions.
  3. Abuse of the drug or other substances may lead to severe psychological or physical dependence.

The complete list of Schedule II drugs follows.[1] The Administrative Controlled Substances Code Number for each drug is included.

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ACSCNClassDrug
9050opiateCodeine
9334opiateDihydroetorphine
9190opiateEthylmorphine
9059opiateEtorphine hydrochloride
9640opiateGranulated opium
9193opiateHydrocodone
9150opiateHydromorphone
9260opiateMetopon
9300opiateMorphine
9610opiateOpium extracts
9620opiateOpium fluid
9330opiateOripavine
9143opiateOxycodone
9652opiateOxymorphone
9639opiatePowdered opium
9600opiateRaw opium
9333opiateThebaine
9630opiateTincture of opium
opiateOpium poppy and poppy straw
9040stimulantCoca, leaves and any salt, compound, derivative or preparation of coca leaves
9041stimulantCocaine, and its salts, isomers, derivatives and salts of isomers and derivatives
9180stimulantEcgonine, and its salts, isomers, derivatives and salts of isomers and derivatives
9670opiateConcentrate of poppy straw (the crude extract of poppy straw in either liquid, solid or powder form which contains the phenanthrene alkaloids of the opium poppy)
9737opioidAlfentanil
9010opiateAlphaprodine
9020opioidAnileridine
9800opiateBezitramide
9273opioidBulk dextropropoxyphene (non-dosage forms)
9743opioidCarfentanil
9120opiateDihydrocodeine
9170opioidDiphenoxylate
9801opioidFentanyl
9226opioidIsomethadone
9648opiateLevo-alphacetylmethadol
9210opiateLevomethorphan
9220opiateLevorphanol
9240opioidMetazocine
9250opioidMethadone
9254opiate intermediateMethadone intermediate: 4-cyano-2-dimethylamino-4,4-diphenyl butane
9802opiate intermediateMoramide intermediate: 2-methyl-3-morpholino-1,1-diphenylpropane-carboxylic acid
9230opioidPethidine (meperidine)
9232opiate intermediatePethidine intermediate A: 4-cyano-1-methyl-4-phenylpiperidine
9233opiate intermediatePethidine intermediate B, ethyl-4-phenylpiperidine-4-carboxylate
9234opiate intermediatePethidine intermediate C, 1-methyl-4-phenylpiperidine-4-carboxylic acid
9715opiatePhenazocine
9730opiatePiminodine
9732opiateRacemethorphan
9733opiateRacemorphan
9739opiateRemifentanil
9740opiateSufentanil
9780opiateTapentadol
1100stimulantAmphetamine, its salts, optical isomers, and salts of its optical isomers (Adderall)
1105stimulantMethamphetamine, its salts, isomers, and salts of its isomers
1631stimulantPhenmetrazine and its salts
1724stimulantMethylphenidate (Ritalin, Concerta, etc.)
1205stimulantLisdexamfetamine (Vyvanse), its salts, isomers, and salts of its isomers
2125depressantAmobarbital
2550depressantGlutethimide
2270depressantPentobarbital
7471depressantPhencyclidine
2315depressantSecobarbital
7379hallucinogenNabilone
8501precursorPhenylacetone
7460precursor1-phenylcyclohexylamine
8603precursor1-piperidinocyclohexanecarbonitrile (PCC)
8333precursor4-anilino-N-phenethyl-4-piperidine (ANPP)

References[edit]

  1. ^ ab21 CFR1308.12 (CSA Sched II) with changes through 77 FR64032 (Oct 18, 2012). Retrieved September 6, 2013.
  2. ^21 U.S.C.§ 812(b)(4) retrieved October 7, 2007
Retrieved from 'https://en.wikipedia.org/w/index.php?title=List_of_Schedule_II_drugs_(US)&oldid=790243388'

The Biopharmaceutics Classification System is a system to differentiate the drugs on the basis of their solubility and permeability.[1]

This system restricts the prediction using the parameters solubility and intestinal permeability. The solubility classification is based on a United States Pharmacopoeia (USP) aperture. The intestinal permeability classification is based on a comparison to the intravenous injection. All those factors are highly important because 85% of the most sold drugs in the United States and Europe are orally administered[citation needed].

BCS classes[edit]

According to the Biopharmaceutical Classification System (BCS) drug substances are classified to four classes upon their solubility and permeability:[1]

  • Class I - high permeability, high solubility
    • Example: metoprolol, paracetamol[2]
    • Those compounds are well absorbed and their absorption rate is usually higher than excretion.
  • Class II - high permeability, low solubility
    • Example: glibenclamide, bicalutamide, ezetimibe, aceclofenac
    • The bioavailability of those products is limited by their solvation rate. A correlation between the in vivo bioavailability and the in vitro solvation can be found.
  • Class III - low permeability, high solubility
    • Example: cimetidine
    • The absorption is limited by the permeation rate but the drug is solvated very fast. If the formulation does not change the permeability or gastro-intestinal duration time, then class I criteria can be applied.
  • Class IV - low permeability, low solubility
    • Example: Bifonazole
    • Those compounds have a poor bioavailability. Usually they are not well absorbed over the intestinal mucosa and a high variability is expected.

Definitions[edit]

The drugs are classified in BCS on the basis of solubility, permeability, and dissolution.

Solubility class boundaries are based on the highest dose strength of an immediate release product. A drug is considered highly soluble when the highest dose strength is soluble in 250 ml or less of aqueous media over the pH range of 1 to 7.5. The volume estimate of 250 ml is derived from typical bioequivalence study protocols that prescribe administration of a drug product to fasting human volunteers with a glass of water.

Permeability class boundaries are based indirectly on the extent of absorption of a drug substance in humans and directly on the measurement of rates of mass transfer across human intestinal membrane. Alternatively non-human systems capable of predicting drug absorption in humans can be used (such as in-vitro culture methods). A drug substance is considered highly permeable when the extent of absorption in humans is determined to be 90% or more of the administered dose based on a mass-balance determination or in comparison to an intravenous dose.

For dissolution class boundaries, an immediate release product is considered rapidly dissolving when no less than 85% of the labeled amount of the drug substance dissolves within 15 minutes using USP Dissolution Apparatus 1 at 100 RPM or Apparatus 2 at 50 RPM in a volume of 900 ml or less in the following media: 0.1 N HCl or simulated gastric fluid or pH 4.5 buffer and pH 6.8 buffer or simulated intestinal fluid.

See also[edit]

  • ADME

References[edit]

  1. ^ abMehta M (2016). Biopharmaceutics Classification System (BCS): Development, Implementation, and Growth. Wiley. ISBN978-1-118-47661-1.
  2. ^https://www.ema.europa.eu/documents/scientific-guideline/draft-paracetamol-oral-use-immediate-release-formulations-product-specific-bioequivalence-guidance_en.pdf

Further reading[edit]

  • Folkers G, van de Waterbeemd H, Lennernäs H, Artursson P, Mannhold R, Kubinyi H (2003). Drug Bioavailability: Estimation of Solubility, Permeability, Absorption and Bioavailability (Methods and Principles in Medicinal Chemistry). Weinheim: Wiley-VCH. ISBN3-527-30438-X.
  • Amidon GL, Lennernäs H, Shah VP, Crison JR (March 1995). 'A theoretical basis for a biopharmaceutic drug classification: the correlation of in vitro drug product dissolution and in vivo bioavailability'. Pharm. Res. 12 (3): 413–20. PMID7617530.

External links[edit]

  • BCS guidance of the U.S. Food and Drug Administration
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Biopharmaceutics_Classification_System&oldid=884065387'