There are 5 classifications and here is a list of what drug is in each class and what makes it listed as an illegal drug.
Schedule I controlled substances
Main article: List of Schedule I drugs (US)
"Placement on schedules; findings required
Except ... The findings required for each of the schedules are as follows:
(1) Schedule I.???
(A) The drug or other substance has a high potential for abuse.
(B) The drug or other substance has no currently accepted medical use in treatment in the United States.
(C) There is a lack of accepted safety for use of the drug or other substance under medical supervision." [9]
No prescriptions may be written for Schedule I substances, and such substances are subject to production quotas by the DEA.
Under the DEA's interpretation of the CSA, a drug does not necessarily have to have the same abuse potential as heroin or cocaine to merit placement in Schedule I (in fact, cocaine is currently a Schedule II drug due to limited medical use):
When it comes to a drug that is currently listed in schedule I, if it is undisputed that such drug has no currently accepted medical use in treatment in the United States and a lack of accepted safety for use under medical supervision, and it is further undisputed that the drug has at least some potential for abuse sufficient to warrant control under the CSA, the drug must remain in schedule I. In such circumstances, placement of the drug in schedules II through V would conflict with the CSA since such drug would not meet the criterion of "a currently accepted medical use in treatment in the United States." 21 USC 812(b).[16]
Sentences for first-time, non-violent offenders convicted of trafficking in Schedule I drugs can easily turn into de facto life sentences when multiple sales are prosecuted in one proceeding.[17] Sentences for violent offenders are much higher.
Drugs in this schedule include:
gamma-Hydroxybutyric acid (GHB), which has been used as a general anaesthetic with minimal side-effects[citation needed] and controlled action but a limited safe dosage range. It was placed in Schedule I in March 2000 after widespread recreational use. Uniquely, this drug is also listed in Schedule III for limited uses, under the trademark Xyrem;
12-Methoxyibogamine (Ibogaine), which has been used in opiate addiction treatment and psychotherapy.
Marijuana. Controversy exists about its placement in Schedule I. There remains no reported cases of THC overdose. Main article: Removal of cannabis from Schedule I of the Controlled Substances Act.
Heroin (Diacetylmorphine), which is used in some European countries as a potent pain reliever in terminal cancer patients, and as second option, after morphine. (It is about twice as potent, by weight, as morphine.)
Other strong opiates and opioids used in many other countries, or even in the USA in previous decades for palliation of moderate to severe pain such as nicomorphine (Vilan), dextromoramide (Palfium), ketobemidone (Ketalgin), dihydromorphine (Paramorfan), piritramide (Dipidolor), diacetyldihydromorphine (Paralaudin), dipipanone (Wellconal), phenadoxone (Heptalgin) and many others.
Weak opioids used for relief of moderate pain, diarrhea, and coughing such as benzylmorphine (Peronine), nicocodeine (Tusscodin), Dihydrocodeinone enol acetate, tilidine (Valoron), meptazinol (Meptid), propiram (Algeril), acetyldihydrocodeine and others.
Pholcodine, a weak opioid cough suppressant with negligible abuse potential[citation needed] which is available over-the-counter in many other countries.
MDMA (3,4-methylenedioxymethamphetamine, Ecstasy), which continues to be used medically, notably in the treatment of post-traumatic stress disorder (PTSD). The medical community originally agreed upon placing it as a Schedule III substance, but the government denied this suggestion, despite two court rulings by the DEA's administrative law judge that placing MDMA in Schedule I was illegal. It was temporarily unscheduled after the first administrative hearing from December 22, 1987 - July 1, 1988.[18]
Psilocybin, the active ingredient in psychedelic mushrooms;
5-MeO-DIPT (Foxy / Foxy Methoxy / 5-methoxy-N,N-diisopropyltryptamine)
Lysergic acid diethylamide ("LSD" / "Acid"), formerly used in psychotherapy
Peyote, a cactus growing in nature primarily in northeastern Mexico; one of the few plants specifically scheduled, with a narrow exception to its legal status for religious use by members of the Native American Church;
Mescaline, the main psychoactive ingredients of the peyote, san pedro, achuma, and Peruvian torch cacti;
Methaqualone (Quaalude, Sopor, Mandrax), a sedative that was previously used for similar purposes as barbiturates, until it was rescheduled;
2,5-dimethoxy-4-methylamphetamine (STP / DOM), a psychotropic hallucinogen that rose to prominence in 1967 in San Francisco when it appeared in pill form (known as "STP", in doses as high as four times the amounts previously considered "safe") on the black market;
Tetrahydrogestrinone (THG / "The Clear"), an anabolic progestegenic androgen first created by the BALCO athletic supplement company that was the drug of choice for athletes using steroids due to its "invisibility" in standard steroid screening tests until 2003, when Trevor Graham provided a sample to the United States Anti-Doping Agency for use in creating a screening test; banned by the FDA for medical use and added to Schedule I in 2003;
2C-T-7 (Blue Mystic / T7), a psychotropic entheogen;
2C-B (Nexus / Bees / Venus / Bromo Mescaline), a psychotropic hallucinogen and aphrodisiac;
Cathinone (β-ketoamphetamine), a monoamine alkaloid found in the shrub Catha edulis (Khat);
AMT (alpha-methyltryptamine), an anti-depressant from the tryptamine family with hallucinogenic properties; first developed in the Soviet Union and marketed under the brand name Indopan;
Bufotenin (5-OH-DMT), a naturally-occurring tryptamine with hallucinogenic and aphrodisiac properties; named for the Bufo genus of toads whose venom contains the chemical;[19]
Benzylpiperazine (BZP), a synthetic drug with a slight resemblance to MDMA and stimulant effects 10 times less potent than amphetamine (though it was mistakenly said to be 10 times more addictive than amphetamine at the drug's schedule hearing).
DXO, active metabolite of Dextromethorphan, NMDA antagonist.[20]
Controlled Substance Analogs intended for human consumption (as defined by the Federal Analog Act)
[edit] Schedule II controlled substances
Main article: List of Schedule II drugs (US)
"Placement on schedules; findings required
Except.... The findings required for each of the schedules are as follows:
Schedule II.???
(A) The drug or other substance has a high potential for abuse.
(B) 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.
(C) Abuse of the drug or other substances may lead to severe psychological or physical dependence." [10]
Except when dispensed directly by a practitioner, other than a pharmacist, to an ultimate user, no controlled substance in schedule II, which is a prescription drug as determined under the Federal Food, Drug, and Cosmetic Act [21 U.S.C. 301 et seq.], may be dispensed without the written prescription of a practitioner, except that in emergency situations, as prescribed by the Secretary by regulation after consultation with the Attorney General, such drug may be dispensed upon oral prescription in accordance with section 503(b) of that Act [21 U.S.C. 353 (b)]. Prescriptions shall be retained in conformity with the requirements of section 827 of this title. No prescription for a controlled substance in schedule II may be refilled.[11] Notably no emergency situation provisions exist outside the Controlled Substances Act's "closed system" although this closed system may be unavailable or nonfunctioning in the event of accidents in remote areas or disasters such as hurricanes and earthquakes. Acts which would widely be considered morally imperative remain offenses subject to heavy penalties.[12]
These drugs vary in potency: for example Fentanyl is about 80 times as potent as morphine. (Heroin is roughly four times as potent.) More significantly, they vary in nature. Pharmacology and CSA scheduling have a weak relationship.
Drugs in this schedule include:
Cocaine (used as a topical anesthetic);
Methylphenidate (Ritalin and Concerta) & Dexmethylphenidate (Focalin) (used in treatment of Attention Deficit Disorder);
Opium and opium tincture (laudanum), which is used as a potent antidiarrheal;
Methadone (used in treatment of heroin addiction as well as for treatment of extreme chronic pain)
Oxycodone (semi-synthetic opioid; active ingredient in Percocet, OxyContin, and Percodan)
Fentanyl and Most other strong pure opioid agonists, i.e. levorphanol, opium, or oxymorphone;
Morphine
Mixed Amphetamine Salts under brand name Adderall
Lisdexamfetamine under brand name Vyvanse
Dextroamphetamine (Dexedrine) Dextromethamphetamine (Desoxyn)
Hydromorphone (Dilaudid)
Pure codeine and any drug for non-parenteral administration containing the equivalent of more than 90 mg of codeine per dosage unit.;
Pure hydrocodone and any drug for non-parenteral administration containing no other active ingredients or more than 15 mg per dosage unit.;
Secobarbital (Seconal)
Pethidine (USAN: Meperidine; Demerol)
Phencyclidine (PCP);
Short-acting barbiturates, such as pentobarbital, Nembutal (now out of production);
Amphetamines were originally placed on Schedule III, but were moved to Schedule II in 1971. Injectable methamphetamine has always been on Schedule II;
Nabilone (Cesamet) A synthetic cannabinoid. An analogue to dronabinol (Marinol) which is a Schedule III drug.
Tapentadol (Nucynta) A new drug with mixed opioid agonist and norepinepherine re-uptake inhibitor activity.
[edit] Schedule III controlled substances
Main article: List of Schedule III drugs (US)
"Placement on schedules; findings required
Except... . The findings required for each of the schedules are as follows:
Schedule III.???
(A) The drug or other substance has a potential for abuse less than the drugs or other substances in schedules I and II.
(B) The drug or other substance has a currently accepted medical use in treatment in the United States.
(C) Abuse of the drug or other substance may lead to moderate or low physical dependence or high psychological dependence." [13]
Except when dispensed directly by a practitioner, other than a pharmacist, to an ultimate user, no controlled substance in schedule III or IV, which is a prescription drug as determined under the Federal Food, Drug, and Cosmetic Act [21 U.S.C. 301 et seq.], may be dispensed without a written or oral prescription in conformity with section 503(b) of that Act [21 U.S.C. 353 (b)]. Such prescriptions may not be filled or refilled more than six months after the date thereof or be refilled more than five times after the date of the prescription unless renewed by the practitioner.[14] Control of wholesale distribution is somewhat less stringent than Schedule II drugs. Provisions for emergency situations are less restrictive within the "closed system" of the Controlled Substances Act than for Schedule II though no schedule has provisions to address circumstances where the closed system is unavailable, nonfunctioning or otherwise inadequate.
Drugs in this schedule include:
Anabolic steroids (including prohormones such as androstenedione);
Intermediate-acting barbiturates, such as talbutal or butalbital;
Buprenorphine;
Dihydrocodeine single-ingredient drugs and the pure drug itself.
Ketamine, a drug originally developed as a milder substitute for PCP (mainly to use as a human anesthetic) but has since become popular as a veterinary and pediatric anesthetic;
Xyrem, a preparation of GHB used to treat narcolepsy. Xyrem is in Schedule III but with a restricted distribution system. All other forms of GHB are in Schedule I;
Hydrocodone / codeine, when compounded with an NSAID (e.g. Vicoprofen, when compounded with ibuprofen) or with acetaminophen (paracetamol) (e.g. Vicodin / Tylenol 3);
Marinol, a synthetic form of Tetrahydrocannabinol (THC) used to treat nausea and vomiting caused by chemotherapy, as well as appetite loss caused by AIDS;
Paregoric, an antidiarrheal and anti-tussive, which contains opium combined with camphor (which makes it less addiction-prone than laudanum, which is in Schedule II;
Lysergic acid amide ("LSA"), listed as a sedative but considered by some to be hallucinogenic.[21][22] A precursor to and chemical relative of LSD. LSA occurs naturally in Rivea corymbosa, morning glory seeds, and Hawaiian baby woodrose seeds. LSA is not biosynthesized by the ergot fungus (Claviceps purpurea), but can be biosynthesized by other Claviceps geni. LSA can be present as an artifact in extracts of ergot.
[edit] Schedule IV controlled substances
Main article: List of Schedule IV drugs (US)
"Placement on schedules; findings required
Except.... The findings required for each of the schedules are as follows:
Schedule IV.???
(A) The drug or other substance has a low potential for abuse relative to the drugs or other substances in schedule III.
(B) The drug or other substance has a currently accepted medical use in treatment in the United States.
(C) Abuse of the drug or other substance may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in schedule III." [15]
Control measures are similar to Schedule III. Prescriptions for Schedule IV drugs may be refilled up to five times within a six month period.
Drugs in this schedule include:
Benzodiazepines, such as alprazolam (Xanax), chlordiazepoxide (Librium), clonazepam (Klonopin), diazepam (Valium)
temazepam (Restoril) (Note that some states require specially coded prescriptions for temazepam)
flunitrazepam (Rohypnol) (Note that flunitrazepam is not used medically in the United States);
The benzodiazepine-like "Z-drugs": Zolpidem (Ambien), Zopiclone, Eszopiclone, and Zaleplon;
Dextropropoxyphene (Doloxene) and propoxyphene (sold in the U.S. as Darvon, and in combination with acetaminophen as Darvocet);
Long-acting barbiturates such as phenobarbital;
Some partial agonist opioid analgesics, such as pentazocine (Talwin);
The stimulant-like drug modafinil (sold in the U.S. as Provigil) as well as its (R)-enantiometer armodafinil (sold in the U.S. as Nuvigil);
Antidiarrheal drugs, such as difenoxin, when combined with atropine (Motofen) (difenoxin is 2-3 times more potent then diphenoxylate, the active ingredient in Lomotil, which is in Schedule V);
[edit] Schedule V controlled substances
Main article: List of Schedule V drugs (US)
"Placement on schedules; findings required
Except.... The findings required for each of the schedules are as follows:
Schedule V.???
(A) The drug or other substance has a low potential for abuse relative to the drugs or other substances in schedule IV.
(B) The drug or other substance has a currently accepted medical use in treatment in the United States.
(C) Abuse of the drug or other substance may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in schedule IV."[23]
No controlled substance in schedule V which is a drug may be distributed or dispensed other than for a medical purpose.[24]
Drugs in this schedule include:
Cough suppressants containing small amounts of codeine (e.g., promethazine+codeine);
Preparations containing small amounts of opium or diphenoxylate (used to treat diarrhea);
Pregabalin (Lyrica), an anticonvulsant and pain modulator.
Pyrovalerone
Some centrally-acting anti-diarrhoeals, such as diphenoxylate (Lomotil) when mixed with atropine to make it unpleasant for people to grind up, cook, and inject. Difenoxin with atropine (Motofen) has been moved to Schedule IV. Otherwise the drugs are in Schedule II.
[edit] Other provisions
The federal law has only five schedules, but some states have added a "Schedule VI" to cover certain substances which are not "drugs" in the conventional sense, but are nonetheless used, or abused, recreationally; these include toluene (found in many types of paint, especially spray paint) and similar inhalants such as amyl nitrite (or ???poppers???), butyl nitrite, and nitrous oxide (found in many types of aerosol cans, though it is pharmacologically active, it is considered an inhalant). Many state and local governments enforce age limits on the sale of products containing these substances.
Pharmaceuticals that require a prescription to be dispensed often are not covered under the Controlled Substances Act. This category includes medicines which should only be taken under a doctor's care, or which may have harmful interactions with other substances, but which are not known to be addictive and which are not used recreationally. These medications are used to treat a wide variety of medical conditions and to manage chronic conditions.
Drugs requiring prescriptions are sometimes also known as legend drugs because legislation formerly required labels with the legend, "Caution! Federal law prohibits dispensing without a prescription." The current requirement has been simplified to the legend "Rx only."
The term controlled drugs is sometimes used for scheduled drugs because of the additional controls placed on them (beyond the need for a prescription).
[edit] Federal regulation of pseudoephedrine
Due to pseudoephedrine being widely used in the manufacture of methamphetamine (see also: pseudoephedrine, "Misuse and illicit use"), Congress passed the Methamphetamine Precursor Control Act which places restrictions on the sale of any medicine containing pseudoephedrine. That bill was then superseded by the Combat Methamphetamine Epidemic Act of 2005, which was passed as an amendment to the Patriot Act renewal and included wider and more comprehensive restrictions on the sale of pseudoephedrine containing products. This law requires[25] customer signature of a "log-book" and presentation of valid photo ID to purchase of pseudoephedrine (PSE) containing products from all retailers.[26]
The law restricts an individual to the retail sale of such products to no more than three packages or no more than nine grams in a single transaction (9 grams is equivalent to 300 standard 30 mg tablets of Sudafed nasal decongestant). A violation of this statute constitutes a misdemeanor. In states where OTC medications which contain pseudoephedrine are not regulated, many retailers, notably Target and Wal-Mart have restricted their purchase by requiring it to be sold behind the pharmacy or service counter and/or placing an age restriction on purchase. Additionally, pharmacies such as CVS and Walgreens also require photo ID and log-book signatures for sales of PSE containing products in compliance with Federal law.
Prior to this, the state of Oregon passed a law requiring a prescription for pharmacies to dispense any cold remedy containing pseudoephedrine. Likewise, the states of Alabama, Arizona, Colorado, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Michigan, Minnesota, Missouri, South Carolina, New Mexico, New Jersey, North Carolina, Oklahoma, Pennsylvania, Tennessee, Texas, Virginia, Washington, Wisconsin and Wyoming restrict sales of pseudoephedrine-containing products to licensed pharmacies and require customers to show photo ID and sign a log book. California, Maryland, and Maine have also enacted degrees of controlled access to over the counter drugs that contain pseudoephedrine. This affects many preparations which were previously available over-the-counter without restriction, such as Actifed, their generic equivalents, etc. California Health and Safety Code sections 11100 and 11106 specify the new restrictions regarding over the counter (OTC) sale of ephedrine or pseudoephedrine containing products (PSE).