This refers to the drug mechanism of action on the body
Pharmacodynamics
First benzodiazepine manufactured (1955). This medicine is still on the market today. This medicine is often used in outpatient treatment of alcohol withdrawal due to its medium to long half-life and active metabolite with a very long half-life.
Chlordiazepoxide/Librium
This drug of abuse directly prevents the re-uptake of dopamine, serotonin, and norepinephrine into pre-synaptic neurons
Cocaine
COKE, SNOW, CRACK, ROCK
Cocaine
This medication (name and dose), FDA approved for ADHD, showed low-strength evidence from two RCTs that it reduces methamphetamine use.
mixed amphetamine salts (Adderall 60-100 mg)
This property, often described as what the body does to a drug, refers to the movement of drug into, through, and out of the body.
Pharmacokinetics
You have a new patient who has been on Alprazolam 1 mg TID for the last 10 years for generalized anxiety disorder. At the visit you start Sertraline and change to Clonazepam 2 mg TID and discuss plans for a slow taper. The patient calls you 2 hours after the change and reports increased anxiety. You believe this is the most likely cause.
Pseudo-withdrawal
Withdrawal- d/c individual with dependence
Rebound anxiety symptoms higher intensity symptoms after discontinuation
recurrence return of anxiety symptoms after discontinuation but does not require dependence
This novel antidepressant with serotonergic, noradrenergic and antihistamine effects has evidence in randomized controlled trials of decreasing use of methamphetamine. Name and dose.
Mirtazapine
Coffin, et al. JAMA 2020
30 mg for 36 wks
SPEED, CRANK, ICE, SHABU, CHRISTINA
Methamphetamine
DEA schedule of cocaine
Schedule 2
One of the pharmacokinetic properties that convey greater addiction potential of a drug
1. rapid delivery of drug to the central nervous system (CNS)
2. rapid absorption
3. low protein binding and high free drug clearance.
Name 2 of the 3 drugs of this class that are metabolized through glucuronidation and not cytochrome P450 metabolism. Thus making them less hepatotoxic.
Lorazepam
Oxazepam
Temazepam
This medication which is FDA approved for AUD has some evidence for treatment of cocaine use disorder.
Name the drug and proposed mechanism of action.
Disulfiram
inhibits dopamine beta-hydroxylase resulting in an excess of dopamine and decreased synthesis of norepinephrine.
syringe access programs, fentanyl strips, PrEP
Harm reduction
Harm reduction is a set of practical strategies and ideas aimed at reducing negative consequences associated with drug use. Harm Reduction is also a movement for social justice built on a belief in, and respect for, the rights of people who use drugs.
This sedative was developed in the Soviet Union and is still marketed in Russia. It is sold on the internet for illicit use in the US. It binds to GABA B and A.
Phenibut
What drug used commonly in addiction medicine binds to the GABA B subunit:
Baclofen
Benzodiazepine use during the third trimester is associated with this birth defect.
Floppy baby syndrome
hypotonia, hypothermia, lethargy, respiratory difficulties, and sucking difficulties
This behavioral treatment for stimulant use disorder gives patients tangible rewards for positive behaviors and has the best evidence of success.
Contingency Management
purple drank, lean, sizzurp
codeine/promethazine/dextromethorphan/soda/jolly ranchers
Using cocaine in the presence of alcohol is proposed to be associated with increased cardio-toxicity due to this.
Cocaethylene
byproduct of concurrent consumption of alcohol and cocaine as metabolized by the liver
2 of the 4 commonly prescribed benzodiazepines that will be picked up in a basic urine drug screen.
Temazepam, Oxazepam, chlordiazepoxide , Diazepam
Many basic urine drug screens only test for the breakdown metabolites, oxazepam and noroxazepam.
Alprazolam , clonazepam, lorazepam , midazolam , and triazolam do not undergo metabolism to oxazepam
Three strategies for de-prescribing benzodiazepines.
1. change to equivalent dose of long acting benzo and taper by 10% every 2 weeks
2. inpatient phenobarbital taper (protocols run 3-10 days)
3. anticonvulsant (high dose Gabapentin or carbamazepine)
In this 2021 RCT by Trivedi the combination of Vivitrol plus this medication (name and dose needed) demonstrated significant reduction in methamphetamine use.
Bupropion XL 450 mg once daily.
Bath salts, plant food
synthetic cathinones
Fatal opioid overdoses often co-occur with other substances. This is the percent that occur with benzodiazepines and stimulants respectively per 2020 CDC data.
16.8 % benzos
23% stimulants
NIH 2020