New and Old Medications for the Treatment of Substance Dependence

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New and Old Medications for the Treatment of Substance Dependence

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Title: New and Old Medications for the Treatment of Substance Dependence


1
New and Old Medications for the Treatment of
Substance Dependence
  • Barry Zevin MD
  • Tom Waddell Health Center San Francisco
    Department of Public Health
  • Harm Reduction Therapy Center, San Francisco, CA
  • Barry_Zevin_at_sfdph.org

2
Ways of Understanding Addiction
  • Crazy, Lazy, and Bad - Moral model
  • Tail of the bell curve - Statistical model
  • Youve got issues - Psychological model
  • Self Treatment - Psychiatric model (Self
    treatment of psychiatric disorder)
  • In the wrong place at the wrong time with the
    wrong people - Social model
  • Its a disease - Medical model
  • Its an emptiness that you need to fill up -
    Spiritual model

3
Bio-Psycho-Social-Spiritual model
  • Biological phenomenon underlie all aspects of
    addiction and addictive behavior
  • Psychological, Social, and Spiritual issues are
    all facets of the illness of addiction
  • The moral model is still the prevalent way of
    understanding addiction
  • This understanding is damaging to patients,
    families, and society
  • Better understanding of the neurobiological basis
    of addiction can help reverse this

4
Evidence for Addiction as a neurobiological
phenomenon
  • Strong genetic predisposition
  • Excellent evidence from animal studies
  • Brain changes visible on imaging, functional
    imaging, and pathological exam
  • Addiction is a chronic relapsing disorder very
    similar to well accepted diseases such as
    hypertension, diabetes, or asthma

5
Important neuro-biology concepts
  • Reward systems - dopamine
  • Homeostasis
  • Neuro-Inhibition / neuro-excitation - GABA -
    glutamate system
  • Multiple brain systems involved - opioid,
    cannabinoid, nicotinic acetylcholine , others
  • Physical dependence / withdrawal / reward
    deficiency
  • Craving / relapse re-exposure to drugs (cross
    triggering), cue induced, stress induced

6
Important neuro-biology concepts
  • Neuroplasticity
  • Vulnerabilities to addiction
  • Inherited, acquiredmixed
  • Genetic connection established
  • Very few instances in which actual genetic
    changes have been identified
  • Co-occurring disorders very common
  • Set and setting very important
  • Spiritual components critical

7
Reward circuits
  • Addictive drugs directly or indirectly work
    through reward circuits
  • Activity in reward circuits over-stimulated and
    therefore natural activity reduced (possibly
    permanently damaged)
  • Reward circuits are stimulated not only by actual
    exposure to drug but by cues, stress, exposure to
    other drugs
  • This is part of natural functioning of system

8
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9
Craving and Loss of Control
  • Dopamine reward systems are the primary
    motivating system in the brain
  • Medication interventions based primarily in the
    dopamine system not effective

10
Craving and Loss of Control
  • Drug craving glutamate system and
    norepinephrine cause dopamine release in
    anticipation of remembered conditioned reward
    primes the pump and triggers all the compulsive
    behaviors and motor memory in anticipation of
    further dopamine release
  • Endorphin, Endocannabinoid, Gaba, etc. systems
    all have complex interconnections acting on this
    phenomenon

11
Craving and Loss of Control
  • Real problem in addiction medicine is relapse
  • Effective medication treatments for addiction
    depend on understanding and changing the complex
    neurobiological systems related to craving and
    loss of control

12
Case 1 Alcohol
13
Mr. Stevens
  • Mr. Stevens
  • 45 yo homeless man with long history of drinking
    with consequences including falls with fractures,
    incarceration for offenses including indecent
    exposure (resulting in being listed as a sex
    offender), violent and abusive episodes resulting
    in his being 86d from many clinics and sites,
    suicidality requiring involuntary holds.
  • He has had multiple treatment episodes usually
    beginning with inpatient detoxification. He is an
    enthusiastic AA participant when sober but
    usually relapses in 3-6 months often with severe
    consequences
  • Triggers for relapse include relationships,
    attempting to work, being discouraged by mess
    Ive made of my life, walking by liquor store,
    seeing others drink, etc.

14
Case 1 Mr Stevens
  • Obnoxious, abusive and violent when drinking
  • Anxious, guilty, dependent when not drinking
  • Interventions
  • BZD Rx resulting in early alcohol relapse, SSRI
    described as helpful but not adherent after early
    relapse
  • 18 mo ago started naltrexone 50mg PO, citalopram
    added
  • Initially maintained 6 mo abstinence in dry bed
    in HL shelter then given opportunity for
    residential dual diagnosis program or SRO based
    minimally supportive housing - chose housing,
    relapsed, eviction due to out of control behavior
    after 4 months

15
Case 1 Mr Stevens
  • Returned to clinic 1 month after eviction with 1
    week clean and sober staying in HL shelter.
    Restarted Naltrexone and entered residential
    program when available. Now struggling with
    program ending and continued homelessness
  • 15 months not drinking in the last 18 months is
    by far longest period of abstinence for patient
    since adolescence. Despite exposure to usual
    triggers for relapse has been better able to cope
    with craving
  • Anxiety, personality style, multiple losses and
    traumas, major barrier of sex offender
    registration are still problems

16
Treatment
  • Research shows that some medications may be
    helpful
  • Decreasing craving
  • Decreasing amount of drinking in individual
    episodes and over the course of time
  • Help maintain abstinence
  • All medications may work best combined with
    psycho-social-spiritual modalities

17
Best Practices for Alcohol Dependence
  • Diagnose and treat underlying mental health
    disorders
  • Evidence for efficacy in treatment of virtually
    all MH disorders is superior to any modalities
    for alcohol dependence
  • Symptoms caused by direct effect of alcohol
    should improve within 1-2 weeks

18
Best Practices for Alcohol Dependence
  • Diagnose and treat underlying mental health
    disorders (cont.)
  • Depression/anxiety/bipolar disorder/personality
    disorders commonly co-occur
  • Use principles of harm reduction psychotherapy
  • Use meds with consideration of safety when used
    with alcohol
  • Most meds are safe even if drinking
    resumes/continues
  • Caution with BZDs due to synergistic risk of
    oversedation
  • Caution with hepato-toxic meds in patients with
    alcoholic hepatitis

19
Promising Target Mechanisms for Alcoholism
Treatment
  • Prevent brain damage from repeated episodes of
    withdrawal (excito-toxicity)
  • Prevent priming effect of small amounts of
    alcohol from triggering full blown relapse
  • Prevent conditioned alcohol related stimuli
    (cues, environmental context from triggering
    relapse)
  • Prevent stress and negative affect from
    triggering relapse
  • Reduce impulsivity

20
Goals of Medication treatment for Alcoholism
  • Prevent adverse effects of withdrawal
  • DTs, seizures, severe anxiety and dysphoria
  • Excito-toxicity and cognitive damage
  • Early exit from treatment
  • Abstinence maintenance / Relapse prevention
  • Moderation / Prevention of loss of control

21
Alcohol Medication Treatment
  • Withdrawal-BZD preferred
  • Adjunctive medications for symptom control
  • Added meds especially when co-occurring disorders
  • Use symptom triggered dosing protocol when
    possible (use CIWA scores)
  • Fixed protocols more practical and successful for
    outpatient (or poorly staffed/poorly trained
    residential or hospital) detox

22
Alcohol Medication Treatment FDA approved for
treatment of alcoholism
  • Naltrexone
  • opioid receptor antagonist, blocks
    reward/reinforcement from drinking Blocks
    anticipatory reward from triggers/cues
  • Best evidence so far - Shown to statistically
    reduce drinking days, volume of drinks, increase
    time to first drink and abstinent days compared
    to placebo
  • Start as early as possible after initiation of
    abstinence
  • 50mg once daily by mouth
  • 1/4 great effect, 1/2 works somewhat, 1/4 no
    effect (anectdotal)

23
Alcohol Medication treatment
  • Naltrexone
  • Compliance a problem dysphorogenic
  • Cannot use in patients requiring opioid
    medication for chronic pain or Methadone/Bupe pts
  • Injectable long acting form not available to poor
    people due to drug company marketing strategy
  • If patients need acute pain control (car crash or
    emergency surgery need special attention to
    overcome opioid receptor blockade)

24
Alcohol Medication Treatment
  • Disulfiram (antabuse)
  • Alcohol use results in build up of acetaldehyde,
    causing unpleasant nausea, vomiting, flushing and
    headache
  • Works best if given under supervision with strong
    social support to take it everyday
  • Possible positive effects on cocaine addiction
    may make this a good choice for combined alcohol
    / cocaine
  • Need to be alcohol free for 72 hours
  • 250mg by mouth once daily
  • Check liver enzymes during therapy

25
Alcohol Medication treatment
  • Acamprosate
  • indirectly blocks glutamate effect at NMDA
    receptor, offsetting GABA/glutamate system
    imbalance
  • Reduces chronic withdrawal symptoms, and
    reduces cue related relapses
  • Good safety profile, well tolerated
  • Two 333mg tablets three times daily by mouth
  • Disappointing results in recent large American
    trials compared to naltrexone alone and placebo
  • Worth a try especially in patients with no effect
    with naltrexone or who have contraindications
  • May work better in patients with longer periods
    of continuing abstinence

26
Alcohol Medication Treatment FDA approved for
indications other than alcoholism
  • Topiramate
  • anticonvulsant, stimulates GABA b receptor in
    reward circuit and reduces dopamine release with
    alcohol use, limiting reward
  • Also offsets GABA/glutamate system imbalance and
    reduces chronic withdrawal symptoms
  • Reduces drinking days, drinks per day, increases
    time to first drink and abstinent days
  • 25mg to 300mg daily need to increase dose slowly
    to avoid cognitive dysfunction - initial dosing
    while drinking ok
  • Not too easy a drug to use, expensive
  • Worth considering especially for patients with
    co-occurring migraines, seizures, bipolar, morbid
    obesity, neuropathic or other pain syndromes

27
Alcohol Medication Treatment
  • FDA approved for indications other than
    alcoholism
  • Valproate (Depakote), Levaricetam (Keppra) other
    AEDs may be worth trials in special
    circumstances
  • Baclofen
  • Also promising in cocaine and other addictions
  • Prazosin and other alpha blockers
  • Also used for PTSD related nightmares / sleep
    disorders
  • Ondensetron
  • In trials was effective in early onset
    alcoholics/high heritability
  • Other serotonin active meds may not be effective

28
Alcohol Medication Treatment
  • What about Benzodiazepines?
  • Risk of overdose
  • Risk of triggering drinking in abstinent patients
  • Can be life changing in selected patients with
    severe underlying anxiety not responsive to other
    meds.
  • alcohol maintenance strategies
  • Positive outcomes in research done in Canada with
    severe alcoholics with this approach

29
Best Practices for Alcohol Dependence
  • Role of AA / 12 step facilitation
  • AA is a spiritual program not a medical
    intervention
  • Recommendations to go to AA may be reasonable
    but do not constitute medical care
  • 12 step facilitation is an accepted medical
    intervention
  • Research shows it to be equally as good/bad as
    other interventions
  • MATCH Study
  • Medication treatment for alcoholism and AA are
    not in conflict
  • See brochure The A.A. Member - Medications
    Other Drugs and p. 133 the Big Book

30
Tobacco
  • Most alcohol and drug users will get sick and die
    of tobacco related illnesses
  • Classic harm reduction situation in which the
    active drug, nicotine, is not responsible for the
    harms attributable to the substance
  • Smoking cessation should be a very high priority
  • Quitting while still using is possible
  • Smoking cessation counseling may be strong signal
    that you have hope and caring for a patient
  • Quitting is possible and desirable even for
    people with severe co-occurring addictions and/or
    severe mental health disorders
  • Quitting cigarettes may be highly motivating
  • Moderation and reducing use may be helpful
  • Residential programs that prohibited smoking and
    offered smoking cessation treatment had better
    results for smoking cessation and alcohol and
    drug related outcomes

31
Tobacco
  • There are excellent medical treatments to help
    with smoking cessation available
  • All treatments work best combined with
    psycho-social techniques
  • Quitting is possible and desirable even for
    people with severe co-occurring addictions and/or
    severe mental health disorders

32
Pharmacotherapy Nicotine
  • Very difficult addiction to manage up to 75 of
    smokers want to quit, 33 try to quit each year,
    3-5 succeed
  • One pack per day smoker gets 200 doses of
    nicotine per day pairing of drug use to multiple
    daily life events
  • Unique ability to modulate wide variety of moods
  • Oral gratification
  • Causes weight loss
  • Any type of pharmacotherapy doubles rate of
    success

33
Pharmacotherapy Nicotine
  • Nicotine replacement therapy low tonic dose of
    nicotine increases number of nicotinic
    acetylcholine receptors in desensitized state
    reduces withdrawal symptoms
  • Number of receptors slowly decreases over weeks

34
Pharmacotherapy Nicotine
  • Nicotine replacement must be given at high enough
    dose
  • Patients with chronic schizophrenia appear to
    have a positive effect of nicotine on associated
    cognitive declines
  • Consider indefinite nicotine replacement in these
    patients
  • This may be true for many smokers and paradigm is
    changing toward long term / indefinite nicotine
    replacement

35
Pharmacotherapy Nicotine
  • Nicotine gum 2-4mg chew then park allows
    self-titration to symptoms 10-15 pieces per day
  • Ineffective use (continuous chewing) often a
    problem
  • mouth irritation / poor dentition may limit use
  • Nicotine patch
  • 7-21mg change every 24 hours
  • 1PPD often require more than one patch - under
    dosing is main cause for failure
  • consider dose taper no sooner than four weeks
    long term use is acceptable
  • if sleep disturbance can remove at bedtime
  • adhesive irritation may limit use
  • Nicotine nasal spray or inhaler (ok to combine
    with patch)
  • Safe even in patients with coronary artery disease

36
Pharmacotherapy Bupropion
  • Bupropion monocyclic antidepressant, inhibits
    reuptake of dopamine and norepinephrine does not
    work by its anti-depressant effect
  • Antagonizes nicotinic acetylcholine receptors and
    decreases reward of smoking
  • Additive effect with nicotine replacement therapy
  • Minimizes weight gain
  • 150 mg by mouth daily for three days, then twice
    daily
  • Cannot be used in patients with history of
    seizures
  • May be useful in stimulant abuse - aim to quit
    cigs and coke or speed

37
Pharmacotherapy Verenicline
  • Chantix (varenicline) partial agonist at
    nicotinic acetylcholine receptor occupies
    receptor and reduces/eliminates reward of smoking
    while reducing withdrawal symptoms
  • .5mg daily for three days, then .5mg twice daily
    for five days, then 1mg twice daily starter kit
    available
  • Better than bupropion and/or nicotine replacement
    therapy
  • Major side effects are nausea, headache and
    insomnia
  • Can be used in combination with most other meds
  • Concerns about mood changes and suicidality
  • Careful monitoring for depression / suicidality
    throughout treatment course (this is a good idea
    for everyone making a quit attempt)

38
Case 2 Opioid Dependence
39
Miss Daniels
  • 30 yo homeless woman with hx of childhood trauma,
    MDD, GAD, chronic pain, Hep C, and heroin
    dependence
  • Started using IV heroin in adolescence, now uses
    1-2 gms daily
  • Presented with desire to stop using, had multiple
    attempts but not able to maintain abstinence.
    Tried methadone detox in past. Cited addiction to
    the ritual of using and being in pain as reasons
    for not being able to stop
  • Never received tx for depression and anxiety in
    past
  • Difficult to form relationship with providers due
    to trust issues

40
Case 2 Ms. Daniels Progression of Treatment
  • Developed relationship over time. Sporadic visits
    eventually became weekly visits
  • Slowly introduced other tx providers
  • Tried various antidepressants/antianxiety/mood
    stabilizer medications (Paxil, Wellbutrin,
    Effexor, Klonopin, Celexa, Lamictal)
  • Referred to methadone maintenance program,
    advocated for free slot until medical benefits
    approved
  • Stabilized on methadone but increased crack and
    BZD use due to high level of access and triggers
    at methadone clinic
  • Currently chips when excessively bored or
    stressed, ritual of use still powerful trigger

41
Case 2 Ms. Daniels Progression of Treatment
  • Assisted her in obtaining a companion pet (cat)
  • Current medication regimen Seroquel 100mg bid,
    Remeron 15mg qhs, Trileptal 300mg bid
  • Stabilized in traditional methadone clinic and
    now transferred to OBOT (office based opioid
    treatment) model combining primary care and
    addiction treatment
  • daily dosing at pharmacy has resulted in much
    less other drug use
  • Goals of reconnecting to family, getting
    extensive dental work done are completed.
    Orthopaedic follow-up to address sequelae of
    multiple old traumas pending, hep C treatment
    still on the back burner

42
Opioid use Disorders - Natural History
  • High mortality rate
  • Is there a difference between heroin addiction
    and Rx opioid dependence?
  • Rate of long term abstinence without methadone or
    Buprenorphine maintenance lt 10-20
  • Due to congenital condition, or something caused
    by drug exposure, natural opiate receptors may be
    permanently malfunctioning
  • Without methadone or Buprenorphine replacement
    relapse to opioid abuse occurs in 80 no matter
    what other kinds of treatment are done
  • To feel normal most people with opioid
    dependence probably need some constant opioid
    activity on the receptor
  • Buprenorphine (and probably methadone) have a
    potent effect on the psychological aspect of
    addiction. Thinking about getting high, dreams,
    craving

43
Pharmacotherapy Opiates
  • Endogenous opiate pathways chronically (?
    permanently) altered
  • Dysphoria, chronic withdrawal symptoms, craving
  • Repeated use of short acting opiates alternating
    with episodes of withdrawal drives increased
    tolerance and dysfunction of system
  • Chronic use of opiate agonists at a steady level
    regulate this dysfunction back to normal

44
Detox?
  • One year recovery rates after opiate detox
  • drug free 5-30
  • Naltrexone 10-20
  • Opioid agonist therapy 50-80
  • Mortality much lower in currently treating
    methadone or buprenorphine maintenance then in
    waiting list or dropped out of treatment
  • Be realistic and think critically of any detox
    based approach
  • Respect patient choices
  • Consider harms and benefits

45
Pharmacotherapy Opiates
  • Naltrexone mu receptor antagonist blocks
    rewarding effect of opiate use
  • Must be drug free for 1-7 days or precipitate
    withdrawal
  • Dysphorogenic early drop out a problem depot
    form available
  • Opiate analgesics for pain control inhibited
  • Efficacy in highly motivated patient with very
    strong social support
  • Usually ineffective and theory of blocking opiate
    high eventually resulting in extinguishing
    craving is probably wrong
  • More effective for alcohol dependence, negative
    results for cocaine but 1 positive study for
    methamphetamine

46
Pharmacotherapy Opiates
  • Mu receptor agonists methadone and buprenorphine
  • Significantly reduce rate of mortality, IV drug
    use, crime, HIV infection, relapse increase rate
    of employment, health parameters and social
    function

47
Pharmacotherapy Methadone
  • long acting, once a day supervised/unsupervised
    dosing low abuse potential
  • Dose titrated to reduce or eliminate withdrawal
    symptoms, craving restore physiologic functions
    toward normal
  • Prolongs QT interval and risk for fatal cardiac
    arrhythmia in some patients
  • Role of screening and follow up EKG causing
    controversy

48
Pharmacotherapy Methadone
  • Minimal sedation constipation decreases libido
  • Risk of sedation low when used at appropriate
    dose and not in combination with other meds
  • Danger of overdose in poly-drug use combinations
    with other sedating meds or drugs
  • In USA legally only for use in treatment of
    opioid dependence in stringently regulated
    narcotic treatment programs
  • Extensive street mythology may discourage use -
    No effect on bones or teeth, not worse withdrawal
    then other opioids (longer though), not really an
    effective opioid blocker, enviable long term
    safety record for methadone and opioids in
    general.

49
Pharmacotherapy Buprenorphine
  • Approved in 2002 can be administered in office
    setting by qualified physician no more than 30
    patients (up to 100 with request)
  • Partial mu receptor agonist, will precipitate
    withdrawal syndrome in heroin or methadone users
    drug free 12-72 hours before starting depending
    on opioid abused
  • Combined with naloxone to prevent IV use bitter
    taste of naloxone inhibits multiple dosing
  • Equally effective as moderate doses of methadone
    (60mg/day) may not be as effective as higher
    doses of methadone (80mg/day) in patient with
    high tolerance
  • This may be more related to difficulty of
    induction in these patients than tolerance levels

50
Buprenorphine
  • Generally safer in terms of overdose risk than
    other opioids
  • Partial agonist/ceiling effect
  • Overdoses that have occurred have been when used
    together with Benzodiazepines
  • Level of risk still not clear
  • Pharmacokinetic vs pharmacodynamic vs other
  • Overdoses in abuse settings usually with IV BZD
    and / or IV buprenorphine use
  • Thought to be safe in setting of prescribed BZD
    use without abuse
  • With careful monitoring
  • Counsel and educate all patients about risk of OD
    with BZD

51
Buprenorphine and Benzodiazepine issues
  • Work with patient to understand their pattern of
    BZD use
  • Often used as 2nd best choice when preferred
    opioid is not readily available
  • Often used to come down from cocaine or speed run
  • Sometimes used for self treatment of underlying
    anxiety disorder or intolerable trauma issues
  • Less commonly used to Just get high or snowed
  • Danger of overdose with illicit opioid and BZD
    definitely higher than with Bupe and BZD
  • Danger of OD probably higher with methadone and
    BZD than Bupe and BZD
  • Liability concerns (which are not trivial)
    underlie much of the discussion

52
Overdose Prevention
  • Education beneficial in preventing overdose
  • Naloxone training when widely offered in
    community saves lives
  • Rescue breathing, naloxone kit dispensed,
    mechanism to replace when used
  • Opioid users frequently exist in tight knit
    urban ecosystems and therefore training must be
    focused on active users or those likely to become
    active users
  • Treatment programs are excellent settings to
    offer this service
  • Most users will return to using or at least to
    spending time with using community

53
Case 3 Stimulant Use Disorders
methamphetamine/cocaine
54
Case 3 Mr. Player
  • 40 yo homeless man with history of post traumatic
    arthritis, psychosis diagnosed as paranoid
    schizophrenia, crack cocaine use
  • Previous medical provider cut him off
    prescriptions for tylenol 3 due to poor
    adherence to appointments, urine toxicology
    showing cocaine but no codeine, frequent criminal
    justice problems
  • Patient agreed to enter outpatient dual diagnosis
    treatment as condition to consider restarting
    opioid analgesic for pain. Baclofen was
    prescribed as an adjunct for both muscle spasm
    and cocaine dependence

55
Mr. Player Current Clinical Picture
  • Patient has demonstrated
  • much reduced psychotic symptoms, better clinic
    appointment adherence
  • no further incarcerations
  • only 1 positive urine toxicology in past year (he
    has requested that these be done as a help to his
    treatment)
  • his pain and functioning are much improved on a
    moderate monthly dose of vicodin
  • Patient attributes much of improvement to
    baclofen
  • He continues with difficult behavior in the
    clinic especially with female staff

56
Cocaine / Use Disorders - Natural History
  • Genetic predisposition
  • Method of delivery of drug very addictive
  • Typical pattern of use - binge (run), crash,
    craving, long term persistence of intense craving
    brought on by triggers
  • Theory of kindling- like a seizure
  • Not everyone uses in typical patterns
  • No proven medications but possibly some things to
    try
  • Numerous medications studied and failed
  • Baclofen, disulfiram, bupropion, several
    stimulant like drugs, atypical anti-psychotics,
    and AEDs with early promising data
  • Esp. if co-occurring medical or psychiatric
    conditions

57
Methamphetamine
  • Chronic methamphetamine use often has severe and
    long term consequences on brain functioning
  • Recognize long lasting / frequently recurring
    psychosis as a risk of methamphetamine use
  • Good evidence for a genetic vulnerability to this
    adverse effect
  • Recurrence may be caused by small doses or
    stressful events
  • Push and crash phenomenon is common so using to
    counteract fatigue is a bad idea
  • No proven medications but possibly some things to
    try
  • Wellbutrin or other non SSRI antidepressants
  • Stimulant or stimulant like meds being researched
  • Underlying ADHD may be common but is hard to
    diagnose and treat while patients are still using
  • Treating agitation and psychosis while using -
    BZD may be safest. Treating lingering psychosis
    with anti-psychotic medications may be helpful

58
Pharmacotherapy Cocaine/Amphetamines
  • Multiple medication trials ssris, tricyclic
    antidepressants, mao inhibitors, naltrexone,
    campral, anticonvulsants none better than
    placebo
  • Baclofen, disufiram, bupropion,
    psycho-stimulants, atypical anti-psychotics,
    naltrexone, others promising in small trials but
    so were the other meds that failed in larger
    trials
  • Intense psychosocial treatment
  • ? Immunotherapy vaccination producing antibodies
    against drug, prevents it from reaching reward
    center

59
ADHD and stimulant use (and other drug use)
  • Co-occurring substance use disorders now known to
    be frequent in ADHD
  • Early and continued psycho-stimulant treatment
    reduces substance use disorders
  • In patients with convincing clinical history and
    presentation trial of treatment with
    psycho-stimulant or non stimulant Rx may be
    warranted
  • Anecdotally in my patients abuse / diversion has
    not occurred possibly due to high access to
    cocaine and methamphetamine

60
Marijuana
  • The brain and body have an extensive
    endo-cannibinoid system (10X more extensive than
    endorphin system)
  • There is a typical withdrawal syndrome from heavy
    marijuana use
  • There is legitimate concerns re long term brain
    effects
  • Increased risk of schizophrenia in small number
    of early users
  • Increase in psychotic symptoms in users with
    underlying psychotoc disorders
  • Brain cortex changes in long time heavy users
  • Medical marijuana use has extensive pros and cons
    and these should be discussed
  • Cannibinoid system primarily used for novelty and
    saliency (making things interesting)
  • Possible drawbacks of virtual novelty
  • Medications that block cannibinoid receptors are
    likely to have a lot of side effects
  • Main proven harm of MJ use remains risk of
    involvement in criminal justice system

61
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62
Marijuana for Harm reduction
  • Can marijuana work as harm reduction for alcohol
    / other drugs
  • Research is lacking in this area
  • Individualize decision making
  • Alcoholic with severe cirrhosis MJ is greatly
    preferable to alcohol
  • MJ in pt with schizophrenia and crack dependence
    maybe not (esp. if pt is already obese)

63
Thank you to Esker-D Ligon NPPsychiatric Nurse
PractitionerHarm Reduction Therapy
CenterClinical facultyUCSF School of Nursing
  • For valuable contributions to an earlier version
    of this presentation

64
Thank You to All My Colleagues at Tom Waddell
Health Center and Our Many PartnersThank You to
My Patients Who I Learn From Every Day
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