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1 Medical Marijuana: Getting In the Weeds Dianne Tharp, PharmD, BPharm, BCPS, CPE Clinical Pharmacist May 17, 2016 1 The views and opinions expressed in this webinar, and/or any related material, are solely those of the original authors and contributors and do not represent the views and opinions of Healthcare Solutions, Inc. and its affiliates. Disclaimer 2 What is MEDICAL Marijuana (MMJ)? Is Marijuana Medicine? Marijuana vs Industrial Hemp Diseases and Medical Marijuana: What the Studies Show Smoking and Misuse of Marijuana Conclusion Effects and Side Effects of Marijuana Why Marijuana, Why Now? 3 AGENDA

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Page 1: Medical Marijuana: Getting In the Weeds · Medical Marijuana: Getting In the Weeds Dianne Tharp, PharmD, BPharm, BCPS, CPE Clinical Pharmacist May 17, 2016 1 The views and opinions

1

Medical Marijuana:Getting In the Weeds

Dianne Tharp, PharmD, BPharm, BCPS, CPEClinical Pharmacist

May 17, 20161

The views and opinions expressed in this webinar, and/or any related material, are solely those of the 

original authors and contributors and do not represent the views and opinions of Healthcare 

Solutions, Inc. and its affiliates.

Disclaimer

2

What is MEDICAL Marijuana (MMJ)?

Is Marijuana Medicine?

Marijuana vs Industrial Hemp

Diseases and Medical Marijuana: What the 

Studies Show

Smoking and Misuse of Marijuana 

ConclusionEffects and Side 

Effects of Marijuana

Why Marijuana, Why Now?

3

AGENDA

Page 2: Medical Marijuana: Getting In the Weeds · Medical Marijuana: Getting In the Weeds Dianne Tharp, PharmD, BPharm, BCPS, CPE Clinical Pharmacist May 17, 2016 1 The views and opinions

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What is MMJ?Dried flowers and leaves of the

Cannabis (marijuana) plant taken for a desired medical purpose

4

Associated Press March 28, 2016 

SYNTHETIC “MARIJUANA” FLOODS TAMPA BAY AREA

5

“ …What makes spice dangerous is how easy it is to get, its inexpensive price and the difficulty of following through with prosecution. While it is called synthetic marijuana, officials say it has nothing to do with the 

leafy drug that is being legalized for medical use and decriminalized in some U.S. states and cities.

Synthetic marijuana is made by taking dried plant material and soaking it in ever‐changing chemical combinations. Packets of the drug used to be available in convenience stores alongside packs of chewing gum and 

candy bars, and sometimes still are, O'Connor said.

Those packets often are rolled into individual spice cigarettes, which sell on the street for $1 or $2 each.

They don't know what they're taking …" 

Associated Press March 28, 2016 

SYNTHETIC “MARIJUANA” IS NOTMEDICAL MARIJUANA

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Page 3: Medical Marijuana: Getting In the Weeds · Medical Marijuana: Getting In the Weeds Dianne Tharp, PharmD, BPharm, BCPS, CPE Clinical Pharmacist May 17, 2016 1 The views and opinions

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Synthetic Cannabinoids

Made in laboratories; examples include FDA approved Marinol® (dronabinol) and Cesamet (nabilone)

Marinol®: Synthetic Oral THC 

Cesamet®: Synthetic Oral THC Analogue

PhytocannabinoidsFound in the plants, contains hundreds of cannabinoids, most notably THC and CBD

Sativex® (Canada/UK): Herbal CannabisExtract 

PHARMACEUTICAL CANNABINOIDS ARE NOTMEDICAL MARIJUANA

7

Various species but C sativa and indica most common for medical marijuana

• 2737 BC—Marijuana first used medicinally

• 1851 AD—Legitimate medical compound in US Pharmacopoeia

• 1937—Criminalized in the United States

Approximately 100M adult Americans have used marijuana and current use rate is reported 17.4 M (SAMHSA)

1.1+ M legal medical marijuana patients registered in the United States (as of Oct 2014, procon.org)

Schedule I Federal Controlled Substance

• Similar to ecstasy, heroin, cocaine, LSD

• No legitimate medical use, lack of accepted safety under medical supervision, and a high potential for abuse

Dried flowers, leaves and stems are usually smoked, but can be vaporized or cooked for ingestion of the extracts

Alternative methods of administration avoid combustion and are considered by some less harmful to the lungs than smoking

Bud

DopeGanja

Hash

Herb Pot

Reefer Weed

SativaIndica Kief

Number of legal medical marijuana patients. Available at http://medicalmarijuana.procon.org/view.resource.php?resourceID=005889.

MARIJUANA REFERS TO DRIED FLOWERS AND LEAVES OF CANNABIS PLANT

8

VAPING

Topical Creams Cannabis, CBD, coconut oil, hemp oil, kpangnan

butter May not be detectable on urine drug test

Oral Oils CBD Oil, MCT Oil Problems compounding exist for these products

The New Smoking Smoking is a natural irritant to the lungs Alternative methods avoid combustion and maybe

considered less harmful to the lungs BUT battery-operated vape pens produce high

temperatures that can transform ingredients into carcinogens and other dangerous toxins

EDIBLES

CREAMS/OILS

Cookies, Candies, and Bars Effects take longer to start. So can ingest more than

needed. Pediatric deaths in Colorado Onset with edibles 30-60 minutes, smoking 30-60 seconds

Effects last longer: edibles 4-6 hours, smoking 1-2 hours Dosage not accurate; Analysis only 17% accurate THC

levels; 60% lower; 23% higher

Products available through Google search. Edible ingredients study. JAMA. Jun 2015.How safe is your vape pen? Available at https://www.projectcbd.org/article/how-safe-your-vape-pen3 Tips on how to eat marijuana edibles. Available at http://reset.me/story/3-tips-eat-marijuana-edibles/.

MEDICAL MARIJUANA PRODUCTS

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Anandamide

• A natural messenger chemical present in the brain at low levels

• Endocannabinoid; role in pain, depression, appetite, memory and fertility

Delta-9-tetrahydrocannabinol (THC)

• Most psychoactive cannabinoid of >200 identified

• Interacts with cannabinoid receptors in the body giving the effects of feeling high

• High concentrations in sativa species, moderate in indicaspecies

Cannabidiol (CBD)

• Nonpsychoactive; interacts differently with receptors along with a serotonin receptor giving the effects of feeling relaxed and heavy aka stoned

• Higher concentrations in indica species vs sativa species

Anandamide

Delta-9-tetrahydrocannabinol (THC)

Cannabidiol (CBD)

Main Cannabinoid Chemicals

10

Hemp as an agricultural commodity. Available at https://www.fas.org/sgp/crs/misc/RL32725.pdf. State industrial hemp statues. Available at http://www.ncsl.org/research/agriculture-and-rural-development/state-industrial-hemp-statutes.aspx. Industrial hemp. Available at http://www.ncleg.net/Sessions/2015/Bills/Senate/PDF/S313v4.pdfBudget bill passed by congress prevents the DEA from spending money on CBD enforcement. Available at https://www.mainstreet.com/article/budget-bill-passed-by-congress-prevents-the-dea-from-spending-any-money-on-cbd-enforcement. Hemp oil hustlers. Available at https://www.projectcbd.org/sites/projectcbd/files/downloads/projectcbd_special-report_medical-marijuana-inc-hempmeds-kannaway.pdf. The Cannavest difference. Available at http://cannavest.com/the-cannavest-difference/. CW Botanicals and Hemp Meds available at: http://hempmedspx.com/ and https://www.theroc.us/charlottes-web. 28. Colorado marijuana study finds legal weed contains potent THC levels. Available at http://www.nbcnews.com/storyline/legal-pot/legal-weed-surprisingly-strong-dirty-tests-find-n327811. 29. Dangerous pesticides are being found in Colorado’s weed. Available at http://www.huffingtonpost.com/entry/colorado-marijuana-pesticides_5655fcf4e4b079b28189fb8c. 30. House blocks DEA from targeting medical marijuana. Available at http://www.huffingtonpost.com/2014/05/30/dea-medical-marijuana-house-vote_n_5414679.html. 31. 3 states that are most likely to legalize recreational marijuana in 2016. Available at http://www.fool.com/investing/general/2015/11/08/3-states-that-are-most-likely-to-legalize-recreati.aspx?source=eogyholnk0000001&utm_source=yahoo&utm_medium=feed&utm_campaign=article#.Vj_vOODEEqU.mailto.

INDUSTRIAL HEMP Low THC <0.3% C sativa plant bred for fiber

for clothing, construction, oils and topical ointments (not psychoactive)

2014 Fed Farm Bill allows university and state departments to grow industrial hemp

Sale, production and distribution of CBD products from imported raw material industrial hemp is legal … cannabinoids in industrial hemp, including oil, were never scheduled under the Controlled Substances Act …

Raw materials shipped to the US obtained from Europe

Several CBD products used for medical conditions (no medical claims allowed FDA)

• Charlotte’s Web Products

• Hemp Meds

• Others

MEDICAL MARIJUANA CBD/THC (THC higher than

0.3%)

Current THC is 18% to 30%

Reports of pesticides greater (6X) than that seen in food

House members … restrict DEA from using funds to go after medical marijuana operations legal under state laws

Almost half of states legalized medical use; more expected to legalize recreational use

Unclear if any federal bills will follow suit

INDUSTRIAL HEMP VS MEDICAL MARIJUANA

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Why the Interest?

12

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Alaska 1998

Arizona 2010

California 1996

Colorado 2000

Connecticut 2012

D.C. 2010

Delaware 2011

Hawaii 2000

Illinois 2013

Maine 1999

Maryland 2014

Massachusetts 2012

Michigan 2008

Minnesota 2014

Montana 2004

Nevada 2000

New Hampshire 2013

New Jersey 2010

New Mexico 2007

New York 2014

Oregon 1998

Rhode Island 2006

Vermont 2004

Washington 1998** CBD Legislation: AL, DE, FL, GA, IA, KY, MS, MO,NC,

OK, SC, TN, TX, UT, VA, WI

13

23  Legal medical marijuana states and  DC. Available at http://medicalmarijuana.procon.org/view.resource.php?resourceID=000881. 

Despite legislation by almost half of the United States, marijuana use is still illegal at

the federal level, which considers marijuana a schedule I controlled substance

23 STATES & DC LEGALIZED MEDICAL MARIJUANA (YEAR PASSED) 

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Source: http://norml.org/legal/medical-marijuana-2

CONSUMER SITES ADVOCATE FOR MMJ

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Opioids in disfavor and under scrutiny• CDC: 44-78 people die every day in the United States from overdose of prescription painkillers; many more

become addicted• Amount of Rx opioids dispensed nearly quadrupled (1999-2013), yet no change in amount of pain Americans

report• Rx painkillers have killed more than 16,000 people in the US in 2013

Lack of alternative analgesics

Injury prevention & control: prescription drug overdose. Available at http://www.cdc.gov/drugoverdose/epidemic/public.html.Centers for Disease Control and Prevention. National Vital Statistics System mortality data. (2015) Available from URL: http://www.cdc.gov/nchs/deaths.htm.Source: http://finance.yahoo.com/news/government‐keeping‐track‐commonly‐prescribed‐193300589.html

Why Medical Marijuana?

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Recreational use of marijuana study reports:

No respiratory depression (person stops breathing) with marijuana when used alone* vs opioids which can cause respiratory depression when used alone

There are no reports of fatal overdoses in the epidemiological literature

BUT

Doubles the chance of a driving accident DUI for marijuana increased risk of car crashes by 2-3 times

Dependence can occur Estimates show 1 in 6 adolescents and half of daily cannabis users Tolerance develops to THC and withdrawal symptoms can occur if suddenly stopped Strongly associated with use of other illicit drugs

Negatively impacts IQ When initiated in adolescence and continued into adulthood

Effect on respiratory health is inconclusive Typically smoke tobacco as well

Smoking marijuana has been associated with an increased risk of cardiovascular side effects and stroke; caution in middle age and older

* 279 deaths where marijuana was involved;

Source: http://finance.yahoo.com/news/government-keeping-track-commonly-prescribed-193300589.html

Hall W. What the research over the past two decades revealed about the adverse health effects of recreational cannabis use? Available at http://onlinelibrary.wiley.com/doi/10.1111/add.12703/abstract. Does cannabis use increase the risk of death? Systematic review of epidemiological evidence on adverse effects of cannabis use. Available at http://onlinelibrary.wiley.com/doi/10.1111/j.1465-3362.2009.00149.x/abstract.

16,235

8,257

4,944

26236

PERCEIVED SAFETY OF MARIJUANA VS OPIOIDS

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Effects and Side Effects

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THC

Mood changes such as anxiety or depression

Cognition effects

• Decreased concentration

• Short-term memory loss

• Decreased attention span

• Paranoia

• Time distortion

Decreased spasticity

Increased appetite

Analgesia

Abuse and dependence potential

• Psychological and physical

CBD

Synergistic effect with THC reducing THC-associated anxiety and paranoia

Anxiolytic

Antipsychotic

Anticonvulsant

Neuroprotective properties

EFFECTS OF MARIJUANA  1960's THC concentration was only 1% to

3%, now, the THC is 16% to

33%

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Wadsworth et al, 2006

Short-term memory problems

Impaired thinking and ability to perform tasks requiring mental alertness

Loss of balance and motor function (eg, coordination)

Decreased ability to concentrate

Changes in sensory perception

Decreased reaction time

Ammerman et al, 2015

Increased heart rate

Increased blood pressure

Dry mouth

Increased appetite, thirst

Drowsiness

Anxiety, insomnia, panic attacks

Hallucinations

Conjunctival injection

SIDE EFFECTS OF SMOKING MARIJUANA

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Increased risk of lung cancer

• 3 to 4 joints = 20 tobacco cigarettes

Increased risk of psychosis

• 3 year study (535 patients)

• 54% schizophrenia-spectrum disorder

Increased risk of periodontal disease

Younger users: decline in IQ (permanent cognitive impairment)

Males

• Suppression of testosterone secretion decreasing libido and/or gynecomastia• Decreased sperm count and motility leading to an increased chance of infertility

Withdrawal syndrome

• Restlessness, insomnia, anxiety, aggression, tremors• Daily dose of 180 mg THC (1-2 joints) for 11-21 days

LONG‐TERM EFFECTS OF SMOKING MARIJUANA

Four times the amount of tar is deposited in the

lungs compared to tobacco smokers

Dependence occurs in 1 out of 10 people

20

Side Effects of CBD

Effects on the immune system may be possible, worsening of disease progression -HIV infection, tumor genesis, and metastases

Sedation

Question effects on blood sugar

Feeling heavy

Overdoses in monkeys: tremors, convulsions, vomiting, sedation to prostration in 30 minutes, cardiac failure

Safety and side effects of cannabidiol, a cannabis sativa constituent. Available at http://www.medicinalgenomics.com/wp-content/uploads/2013/01/Bergamaschi_2011.pdf.Identification of cytochrome P450 enzymes responsible for metabolism of cannabidiol by human liver microsomes. Available at http://europepmc.org/abstract/MED/21704641.The role of cannabis and cannabinoids in diabetes. Available at http://www.medscape.com/viewarticle/738863_3.The Endocannabinoidome. Copyright 2015.

Drug Interactions- CBD

May cause drug interactions and increase or decrease their effects or make them toxic

Significant number of drug interactions to make it a concern

CBD could interact with anticancer drugs

CBD possible interaction with other pain meds like NSAIDs (eg, Motrin, Aleve)

EFFECTS OF SYSTEMIC CBD: NOT ALL IS GOOD

BIGGEST CAUTION

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ADVERSE EFFECT LEVEL OF EVIDENCE

Addiction to drugs HIGH

Low lifetime achievement HIGH

Increased motor vehicle accidents HIGH

Chronic bronchitis HIGH

Abnormal development of brain MEDIUM

Progression to other drug use MEDIUM

Comorbid anxiety or depression MEDIUM

Schizophrenia MEDIUM

Lung cancer LOW

ADVERSE EFFECTS OF MARIJUANA ON HEALTH AND WELL‐BEING

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Lab data (22,000+ UDTs) correlation between marijuana and prescription drug use in national population

Marijuana most frequently detected non-prescribed drug in >26% of patients who do not use medications as prescribed

Marijuana most frequently detected drug in the nation’s workforce. Quest March 2013 drug test index report

Approximately 45% of patients who use recreational marijuana also used other non-prescribed drugs (ie, sedatives and narcotics)

37% of medical marijuana users misused other drugs

NON‐MEDICAL MARIJUANA AND PRESCRIPTION DRUG MISUSE CONTINUES IN THE UNITED STATES

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Diseases

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The laws in many states define the medical conditions, circumstances and methods of consumption in which an individual can secure and use medical marijuana

Pennsylvania allows the following “qualified medical conditions”:

• Cancer• HIV or AIDS• Amyotrophic lateral sclerosis (ALS, Lou Gehrig’s Disease; paralysis)• Parkinson’s Disease• Multiple sclerosis (MS) • Spinal cord damage spasticity• Epilepsy and intractable seizures• Inflammatory Bowel Disease and Crohn’s Disease• Neuropathies• Huntingdon’s Disease• Posttraumatic stress disorder (PTSD) • Glaucoma• Sickle Cell Anemia• Severe chronic or intractable pain (neuropathic OR traditional therapy ineffective …)• Autism

The above list of medical conditions is broad, and in most cases not supported by solid clinical research. Any research that has been done used smoked marijuana; studies are needed with use of edible products, extracted oils, tinctures and topical ointments.

Pennsylvania SB 3. http://www.medicalmarijuana.procon.org/sourcefiles/Pennsylvania-sb3-2015.pdf.Borgelt LM. The pharmacologic and clinical effects of medical cannabis. Pharmacotherapy. 2013;33(2):195-209

PENNSYLVANIA MEDICAL USES

25

Studies

26

LOOKS GOOD BUT …1. 30 pts, many drop outs, side effects

2. 15 HIV pts, 2 day pilot study, 2005 not published

3. 28 pts, with opioids, 2 wks, 2 dropouts, measure limited by confusion and sedation

4. 2005 complete but no results

5. Rat headaches

6. pre-clinical, rats, endocannabinoid responses to anandamide: no change

7. AIDS preclinical cell immunity study 2004

8. 15 healthy volunteers “suggests window of modest analgesia for smoked cannabis … lower doses decrease pain, higher doses increase pain …”

9. 16 patients … preliminary evidence to support further research … diabetic neuropathy

10. 38 patients … use of MJ as medicine limited by method (smoking) and acute cognitive effects

11. MJ for pain relief: Don’t jump to conclusions … “clinically significant outcome” not borne out by the study

12. 14/18 subjects preferred vaporizing to smoke

13. 52% smoked MJ had >30% reduction in NP vs. 24% with placebo

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• Interest in use for resistant epilepsy the result of a mix of science, politics, and social phenomena

• Anecdotal evidence (no controlled trials) of seizure control, but results with CBD encouraging; might be considered under close physician supervision after failure of all conventional therapies

• Evidence for medical marijuana being harmful to developing brain (eg, schizophrenia)

• Synthetic cannabinoids appear even more toxic

Use in Epilepsy

Therapeutic potential but no

controlled trials for safety and efficacy of cannabinoids in epilepsy—WLDI

2016

28

Colorado Board of Health awards $8 M to study medical marijuana’s therapy potential

First government money for efficacy research rather than just looking for negative effects

Funded by state medical marijuana patient user fees--medical use legalized in 2000, recreational use in 2012

Other studies: anxiety, ADHD, substance abuse, epilepsy, pain, nausea, arthritis, PTSD, schizophrenia, sickle cell disease, sleep apnea, spasticity/MS (https://ClinicalTrials.gov)

Future Research Funded

29

Much of the evidence is anecdotal; few double-blind, randomized, controlled trials; most of poor quality as a result of Federal Class I designation

American Medical Association (AMA)

• Despite the public controversy, less than 20 small randomized controlled trials of short duration involving ~300 patients have been conducted over the last 35 years on smoked cannabis.

• Large variability in specific cannabinoids in various medical marijuana products

• Reduce the schedule and conduct more research

Institute of Medicine (IOM)• Smoking marijuana is not recommended. The long-term harm

caused by smoking marijuana makes it a poor drug delivery system, particularly for patients with chronic illnesses.

• Development of non-smoked, reliable delivery systems and testing needed

Report 3 of the council on science and public health. 2009. Available at http://www.procon.org/sourcefiles/AMAReport_CouncilSciencePublicHealth.pdf. Marijuana and Medicine. Mar 1999 Available at http://medicalmarijuana.procon.org/sourcefiles/IOM_Report.pdf.

LACK OF EVIDENCE FOR SMOKED MEDICAL MARIJUANA 

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How US FDA Approves New Drugs

31

http://www.fda.gov/Drugs/ResourcesForYou/Consumers/ucm295473.htm32

33ff

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1. Preclinical (animal) testing

2. An investigational new drug application (IND) outlines what the sponsor of a new drug proposes for human testing in clinical trials

3. Phase 1 studies (typically involve 20 to 80 people)

4. Phase 2 studies (typically involve a few dozen to about 300 people).

5. Phase 3 studies (typically involve several hundred to about 3,000 people)

6. The pre-NDA period, just before a new drug application (NDA) is submitted. A common time for the FDA and drug sponsors to meet

7. Submission of an NDA is the formal step asking the FDA to consider a drug for marketing approval

8. After an NDA is received, the FDA has 60 days to decide whether to file it so it can be reviewed

9. If the FDA files the NDA, an FDA review team is assigned to evaluate the sponsor's research on the drug's safety and effectiveness

10. The FDA reviews information that goes on a drug's professional labeling(information on how to use the drug)

11. The FDA inspects the facilities where the drug will be manufactured as part of the approval process

12. FDA reviewers will approve the application or issue a complete response letter

13. Post-marketing surveillance

FDA: Drug Review Steps Simplified

34

Synthetic CannabinoidsMade in laboratories; examples include FDA approved Marinol® (dronabinol) and Cesamet(nabilone)

Marinol®: synthetic oral THC

• Schedule III

• Relieve nausea/vomiting from chemotherapy and loss of appetite in patients with HIV

Cesamet®: synthetic oral THC analogue

• Schedule II

• Believed to be more potent than THC

• Nausea/vomiting associated with chemotherapy

Phytocannabinoids – Cannabis

• Sublingual spray adjunct treatment central neuropathic pain in MS and cancer pain

• Rapid acting, easy to use

• Study in the US showed not better than placebo for pain

Sativex® (Canada/UK): herbal Cannabis extract (THC/CBD, 1:1)

Marinol and Cesamet. Available at http://marinol.com/ and http://cesamet.com/patient-home.asp.Sativex. Available at http://www.gwpharm.com/Sativex.aspx.

PHARMACEUTICAL CANNABINOIDS

Found in the plants; contains hundreds of cannabinoids, most notably THC and CBD

35

In an environment of opioid scrutiny and critical use, states are moving to approve medical marijuana for pain and certain critical conditions

THC can decrease pain in mid-range (but not high) doses, and also leads to serious risks of dependence, and excessive CNS side effects with cognitive decline

There are no quality clinical studies demonstrating the medical benefits of smoked marijuana, edibles or other oral forms and cannabinoid use

Despite medical marijuana legalization in 23 states and DC and recreational use in 4 states, marijuana remains a Federal Schedule I controlled substance—still illegal to manufacture, possess and use under federal law

Conflict between state and federal law creates confusion

Physicians are mandated to adequately treat pain, yet may be sanctioned by their licensing medical boards

Adverse effects and legal implications may outweigh the benefits of medical marijuana in some cases

Summary

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“Cannabinoids—Not recommended for pain … there are no quality studies supporting cannabinoid use, and there are serious risks … it is very difficult to do controlled studies with a drug that is psychoactive because it is hard to blind to these effects … high doses increase pain … [and] declines in cognitive performance … integral to a patient’s work and lifestyle … adding a cannabinoid to opioid therapy … more study needed.

Smoking anything is unacceptable … Cannabis is unstable and unpredictable and the drug should be subject to the same standards that apply to other medications. For every disease and disorder for which marijuana has been recommended, there is a better, FDA-approved medication.” --Work Loss Data Institute Apr 2016, 

“Physicians should not recommend that patients use marijuana for medical purposesbecause it is a dangerous, addictive drug and is not approved by the FDA --AmericanSociety Addiction Medicine

Despite legalization by several states, marijuana use is still illegal in the United States atthe federal level (which considers marijuana a schedule I controlled substance), andindividuals prescribing or using marijuana for medical use are at risk for prosecution. ‐‐UpToDate. Online database. Apr 2016

Bottom Clinical Lines

37

QUESTIONS

38

American Glaucoma Society. Position statement on marijuana and the treatment of glaucoma. Available at: http://www.americanglaucomasociety.net/patients/position_statements/marijuana_glaucoma. Accessed April 6, 2016.

American Medical Association. Report 3 of the Council on Science and Public Health (I-09). Use of cannabis for medicinal purposes. Available at: http://www.ama-assn.org/resources/doc/csaph/x-pub/csaph-report3-i09.pdf.

American Society of Addiction Medicine (ASAM). The role of the physician in “medical” marijuana. September 2010. Available at: http://www.asam.org/pdf/Advocacy/MedMarijuanaWhitePaper20110314.pdf

Ammerman S, et al. The impact of marijuana policies on youth: clinical, research, and legal update. Pediatrics. 2015;135(3): e769-785.

Ammerman S. The impact of marijuana policies on youth: clinical, research, and legal update. Available at: http://dfaf.org/assets/docs/Pediatrics-2015-Ammerman-peds.2014-4147.pdf. Accessed April 2016.

Arendt M, Rosenberg R, et al. Cannabis-induced psychosis and subsequent schizophrenia-spectrum disorders: follow-up study of 535 incident cases. BJP. 2005;187:510-515.

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