Nicotine replacement therapy
Template:Short description Template:Cs1 config Template:Main other <templatestyles src="Infobox drug/styles.css"/> {{#invoke:Infobox|infobox}}Template:Template other{{#invoke:TemplatePar |check |template=Template:Infobox_drug |all= |opt= pronounce= pronounce_ref= pronounce_comment= ATC_prefix= ATC_suffix= ATC_supplemental= ATCvet= biosimilars= CAS_number_Ref= CAS_number= CAS_supplemental= ChEBI= ChEBI_Ref= ChEMBL_Ref= ChEMBL= ChemSpiderID= ChemSpiderID_Ref= chirality= class= container_only= DailyMedID= data_page= DrugBank_Ref= DrugBank= Drugs.com= duration_of_action= INN= INN_EMA= IUPAC_name= IUPHAR_ligand= KEGG_Ref= KEGG= MedlinePlus= NIAID_ChemDB= PDB_ligand= PubChemSubstance= PubChem= StdInChIKey_Ref= StdInChIKey= StdInChI_Ref= StdInChI_comment= StdInChI= UNII_Ref= UNII= DTXSID= Verifiedfields= Watchedfields= addiction_liability= alt2= altL= altR= alt= bioavailability= boiling_high= boiling_notes= boiling_point= captionLR= caption= caption2= charge= chemical_formula= chemical_formula_ref= chemical_formula_comment= class1= class2= class3= class4= class5= class6= component1= component2= component3= component4= component5= component6= density= density_notes= dependency_liability= drug_name= elimination_half-life= engvar= excretion= image2= imageL= imageR= image= image_class= image_class2= image_classL= image_classR= Jmol= legal_AU= legal_BR= legal_CA= legal_DE= legal_EU= legal_NZ= legal_UK= legal_UN= legal_US= legal_AU_comment= legal_BR_comment= legal_CA_comment= legal_DE_comment= legal_UK_comment= legal_NZ_comment= legal_US_comment= legal_UN_comment= legal_EU_comment= legal_status= licence_CA= licence_EU= licence_US= license_CA= license_EU= license_US= mab_type= melting_high= melting_notes= melting_point= metabolism= metabolites= molecular_weight= molecular_weight_round= molecular_weight_unit= molecular_weight_ref= molecular_weight_comment= onset= pregnancy_AU= pregnancy_AU_comment= pregnancy_category= protein_bound= routes_of_administration= SMILES= smiles= solubility= sol_units= source= specific_rotation= synonyms= target= tradename= type= vaccine_type= verifiedrevid= width2= widthL= widthR= width= AAN= BAN= JAN= USAN= source_tissues= target_tissues= receptors= agonists= antagonists= precursor= biosynthesis= gt_target_gene= gt_vector= gt_nucleic_acid_type= gt_editing_method= gt_delivery_method= sec_combustion= Ac=Ag=Al=Am=Ar=As=At=Au=B=Ba=Be=Bh=Bi=Bk=Br=C=Ca=Cd=Ce=Cf=Cl=Cm=Cn=Co=Cr=Cs=Cu= D=Db=Ds=Dy=Er=Es=Eu=F=Fe=Fl=Fm=Fr=Ga=Gd=Ge=H=He=Hf=Hg=Ho=Hs=I=In=Ir=K=Kr=La=Li=Lr=Lu=Lv= Mc=Md=Mg=Mn=Mo=Mt=N=Na=Nb=Nd=Ne=Nh=Ni=No=Np=O=Og=Os=P=Pa=Pb=Pd=Pm=Po=Pr=Pt=Pu=Ra=Rb=Re=Rf=Rg=Rh=Rn=Ru=S=Sb=Sc=Se=Sg=Si=Sm=Sn=Sr=Ta=Tb=Tc=Te=Th=Ti=Tl=Tm=Ts=U=V=W=Xe=Y=Yb=Zn=Zr= index_label= index2_label= index_comment= index2_comment= CAS_number2= CAS_supplemental2= ATC_prefix2= ATC_suffix2= ATC_supplemental2= PubChem2= PubChemSubstance2= IUPHAR_ligand2= DrugBank2= ChemSpiderID2= UNII2= KEGG2= ChEBI2= ChEMBL2= PDB_ligand2= NIAID_ChemDB2= SMILES2= smiles2= StdInChI2= StdInChIKey2= CAS_number2_Ref= ChEBI2_Ref= ChEMBL2_Ref= ChemSpiderID2_Ref= DrugBank2_Ref= KEGG2_Ref= StdInChI2_Ref= StdInChIKey2_Ref= UNII2_Ref= DTXSID2= QID= QID2=PLLR= pregnancy_US= pregnancy_US_comment= |cat=Pages using infobox drug with unknown parameters |format=0|errNS=0
|preview=
}}{{Infobox drug/maintenance categoriesTemplate:Yesno | drug_name = | INN = | _drugtype =
| _has_physiological_data= | _has_gene_therapy=
| vaccine_type= | mab_type= | _number_of_combo_chemicals={{#invoke:ParameterCount |main |component1 |component2 |component3 |component4|component5|component6 }} | _vaccine_data= | _mab_data= | _mab_vaccine_data= | _mab_other_data=10142 | _combo_data= | _physiological_data= | _clinical_data=Template:Drugs.coma601084Nicotine Oral, Inhalation, Transdermal,Nicoderm, Commit, Nicorette, others<ref name=AHFS2015/>N07 | _legal_data=<ref name="Nicoderm CQ FDA label">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>OTC
| _other_data=(S)-3-[1-Methylpyrrolidin-2-yl]pyridine
| _image_0_or_2 = Nicoderm.JPG | _image_LR =
| _datapage = Nicotine replacement therapy (data page) | _vaccine_target={{#ifeq: | vaccine | | _type_not_vaccine }} | _legal_all=OTC | _ATC_prefix_supplemental=N07 | _has_EMA_link = | CAS_number=54-11-5 | PubChem=89594 | ChemSpiderID=80863 | ChEBI= | ChEMBL= | DrugBank= | KEGG= | _hasInChI_or_Key={{#if: |yes}} | UNII=6M3C89ZY6R | _hasJmol02 = |_hasMultipleCASnumbers = |_hasMultiplePubChemCIDs = |_hasMultipleChEBIs =
| _countSecondIDs={{#invoke:ParameterCount |main |CAS_number2 |ATC_prefix2 |PubChem2 |PubChemStructure2 |IUPHAR_ligand2 |DrugBank2 |ChemSpiderID2 |UNII2 |KEGG2 |ChEBI2 |ChEMBL2 |PDB_ligand2 |NIAID_ChemDB2 |SMILES2 |smiles2 |StdInChI2 |StdInChIKey2 |DTXCID2}} | _countIndexlabels={{#invoke:ParameterCount |main |index_label |index2_label}} | _trackListSortletter= |QID = |QID2 = |Verifiedfields= |Watchedfields= |verifiedrevid=}}
Nicotine replacement therapy (NRT) is a medically approved way to treat people with tobacco use disorder by taking nicotine through means other than tobacco.<ref>Template:Cite journal</ref> It is used to help with quitting smoking or stopping chewing tobacco.<ref name=AHFS2015/><ref>Template:Cite journal</ref> It increases the chance of quitting tobacco smoking by about 55%.<ref name=Hart2018>Template:Cite journal</ref> Often it is used along with other behavioral techniques.<ref name=AHFS2015/> NRT has also been used to treat ulcerative colitis.<ref name=AHFS2015/> Types of NRT include the adhesive patch, chewing gum, lozenges, nose spray, and inhaler.<ref name=AHFS2015>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The use of multiple types of NRT at a time may increase effectiveness.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref>
Common side effects depend on the formulation of nicotine.<ref name=AHFS2015/> Common side effects with the gum include nausea, hiccups, and irritation of the mouth.<ref name=AHFS2015/> Common side effects with the patch include skin irritation and a dry mouth while the inhaler commonly results in a cough, runny nose, or headaches.<ref name=AHFS2015/> Serious risks include nicotine poisoning and continued addiction.<ref name=AHFS2015/> They do not appear to increase the risk of heart attacks.<ref name=Hart2018/> There are possible harms to the baby if used during pregnancy.<ref name=AHFS2015/><ref name="ReferenceA">Template:Cite journal</ref> Nicotine replacement therapy works by reducing cravings caused by nicotine addiction.<ref name=AHFS2015/><ref name="ReferenceB">Template:Cite report</ref>
They were first approved for use in 1984, in the United States.<ref name=AHFS2015/> Nicotine replacement products are on the World Health Organization's List of Essential Medicines.<ref name="WHO21st">Template:Cite book</ref><ref name="WHO22nd">Template:Cite book</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> They are available as generic medications.<ref name=AHFS2015/>
Medical usesEdit
Nicotine replacement therapy, in the form of gum, patches, nasal spray, inhaler and lozenges all improve the ability of people trying to quit tobacco products.<ref name=Hart2018/> Nicotine replacement therapy is as effective as medications, such as bupropion, in helping people quit smoking for at least six months.<ref name=Cahill2013>Template:Cite journal</ref> All forms of nicotine replacement therapy, including nicotine gum, patches, nasal spray, inhalers, and lozenges, have similar success rates in terms of helping people stop smoking. However, the likelihood that someone will stick to a certain treatment varies, with compliance being the highest with nicotine patches, followed by nicotine gum, inhalers, and nasal sprays.<ref>Template:Cite journal</ref> Using a few different nicotine replacement methods in combination may improve success rates in stopping tobacco use.<ref name="Cahill2013"/><ref name="smokefree.gov">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Additionally, using nicotine replacement with counseling has been proven to improve tobacco abstinence rates.<ref name=Rigotti>Template:Cite journal</ref><ref name="MedlinePlus" /> These other strategies include: creating a plan to quit and utilizing quit programs, a quit phone line, or app that provides tips and inspiration to help quit.<ref name="smokefree.gov" />
Using nicotine replacement therapy to quit smoking should be considered for people who are severely dependent on nicotine.<ref name="www.cancer.org">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> People who are severely dependent include those who smoke: more than one pack per day, within five minutes of awakening, while ill, when they wake up in the middle of the night, to ease withdrawal signs and symptoms.<ref name="www.cancer.org" />
Nicotine replacement products are most beneficial for heavy smokers who smoke more than 15 cigarettes per day. There are not enough studies to show whether NRT helps those who smoke fewer than 10 cigarettes per day.<ref name="MedlinePlus">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
EffectivenessEdit
Evaluation of NRT in real-world studies produces more modest outcomes than efficacy studies conducted by industry-funded trials. The National Health Service (NHS) in England has a smoking cessation service based on pharmacotherapy in combination with counseling support. An Action on Smoking and Health (UK) (ASH) report claims that the average cost per life-year gained for every smoker successfully treated by these services is less than £1,000 (below the NICE guidelines of £20,000 per QALY (quality-adjusted life year). However, the investment in NHS stop smoking services is relatively low. A comparison with treatment costs for illicit drug users shows that £585 million is committed for 350,000 problem drug users compared to £56 million for 9 million users of tobacco. This is £6.20 for each smoker, compared to £1,670 per illegal drug user.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
The claims for high efficacy and cost-effectiveness of NRT have not been substantiated in real-world effectiveness studies.<ref name="Doran_2006">Template:Cite journal</ref><ref name="Bauld_2011">Template:Cite journal</ref><ref name=Pierce02>Template:Cite journal</ref> Pierce and Gilpin (2002) stated their conclusion as follows: "Since becoming available over the counter, NRT appears no longer effective in increasing long-term successful cessation" (p. 1260).<ref name=Pierce02/> Efficacy studies, which are conducted using randomized controlled trials, do not transfer very well to real-world effectiveness. Bauld, Bell, McCullough, Richardson and Greaves (2009) reviewed 20 studies on the effectiveness of intensive NHS treatments for smoking cessation published between 1990 and 2007.<ref>Template:Cite journal</ref> Quit rates showed a dramatic decrease between 4-weeks and one year. A quit rate of 53% at four weeks fell to only 15% at one year. Younger smokers, females, pregnant smokers and more deprived smokers had lower quit rates than other groups.Template:Citation needed
The efficacy for each of the formulations alone (lozenges, nasal spray, gum, and transdermal patch) to aid in smoking cessation is equal.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Efficacy increases 15% to 36% with combining treatments such as gum and lozenges. Higher doses increase the chance of stopping smoking for a period of six months and more. For patches, the most efficient doses were 25 mg worn over 16 hours or 21 mg worn over 24 hours. The evidence suggests that 4 mg nicotine gum leads to higher quit rates compared with 2 mg in heavy smokers.<ref name="Theodoulou_2023">Template:Cite journal</ref>
ToxicityEdit
N-Nitrosonornicotine, a strong carcinogen present in unburned tobacco and cigarette smoke, has been found in the urine of some users of oral NRT products.<ref>Template:Cite journal</ref> Nicotine patches is an alternative.
Side effectsEdit
Some side effects are caused by the nicotine, and are common to NRT products.<ref name="Drugs.com">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name=Schraufnage2014>Template:Cite journal</ref> Other common side effects depend on the formulation of nicotine.<ref name=AHFS2015/> Common side effects with the gum include nausea, hiccups, and irritation of the mouth.<ref name=AHFS2015/> Common side effects with the patch include skin irritation and a dry mouth while the inhaler commonly results in a cough, runny nose, or headaches.<ref name=AHFS2015/> To minimize local skin reactions from the patch, the application site should be moved daily.<ref name=Wad2016 /> The nicotine patch can also cause strange dreams if worn while asleep.<ref name="MedlinePlus" /> Nasal sprays commonly cause nasal irritation, watering eyes, and coughing.<ref name=Drugs.com/>
Serious risks include nicotine poisoning, which includes symptoms like visual disturbances, hyper-salivation, nausea, and vomiting; and continued addiction to nicotine products.<ref name=AHFS2015/> Avoiding smoking and other products with nicotine are recommended since it may lead to nicotine overdose.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Although overdose is rare, it can be problematic, especially in children and pets.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The symptoms of nicotine overdose include headache, pale skin and mouth, belly pain, weakness, diarrhea, tremors or seizures, agitation, confusion, restlessness, high or low blood pressure, fast or irregular heartbeat, fast breathing, and cold sweats.<ref name="www.cancer.org" />
Limited evidence exists regarding long-term NRT use.<ref name=Wilder2016>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
SafetyEdit
PregnancyEdit
Nicotine is not safe to use in any amount during pregnancy.<ref name=AlawsiNour2015>Template:Cite journal</ref> Nicotine crosses the placenta and is found in the breast milk of mothers who smoke as well as mothers who inhale passive smoke.<ref name=Chapman2015>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> There are possible harms to the baby if NRT is used during pregnancy.<ref name=AHFS2015/><ref name="ReferenceA"/> Thus, pregnant women and those who are breastfeeding should also consult a physician before initiating NRT.<ref name=FDA101 /> The gum, lozenge, and nasal spray are pregnancy category C. The transdermal patch is pregnancy category D. The transdermal patch is considered less safe for the fetus because it delivers continuous nicotine exposure, as opposed to the gum or lozenge, which delivers intermittent and thus lower nicotine exposure.<ref name="Bruin2010"/><ref name=Oncken />
Strong evidence suggests that nicotine cannot be regarded as a safe substance of cigarette use.<ref name=Bruin2010/> Nicotine itself could be at least partly responsible for many of the adverse after birth health results related to cigarette use while the mother was pregnant.<ref name=Bruin2010>Template:Cite journal</ref> There is evidence that nicotine negatively affects fetal brain development and pregnancy outcomes.<ref name=SGUS2014>Template:Cite book</ref> There is also risk of stillbirth and pre-term birth.<ref name=SGUS2014_9>Template:Cite book</ref> Nicotine use will probably harm fetal neurological development.<ref>Template:Cite journal</ref> Risks to the child later in life from nicotine exposure during pregnancy include type 2 diabetes, obesity, hypertension, neurobehavioral defects, respiratory dysfunction, and infertility.<ref name=Schraufnage2014/> Nicotine exposure during pregnancy can result in attention deficit hyperactivity disorder (ADHD) and learning disabilities in the child.Template:Citation needed It also puts the child at increased risk for nicotine addiction in the future.<ref name="Bruin2010"/>
Pregnant women should consider behavioral therapy before NRT is considered.<ref name=AHFS2015/>
YouthEdit
In people under the age of eighteen, a physician is often consulted before starting NRT.<ref name=FDA101 /> The evidence suggests that exposure to nicotine between the ages of 10 and 25 years causes lasting harm to the brain and cognitive ability.<ref name="e-cig_SG_2016_cognitive">Template:Cite report</ref> Evidence is unclear whether adolescents gain benefit from cognitive-behavioral therapy or smoking cessation over the long-term as of 2017.<ref>Template:Cite journal</ref> Most tobacco users are under-eighteens when they start, and almost no-one over the age of 25 starts using.<ref name="e-cig_SG_2016_hooked">Template:Cite report</ref>
Cardiovascular conditionsEdit
While there is no evidence that NRT can increase the risk of heart attacks,<ref name=Hart2018/> individuals with pre-existing cardiovascular conditions or recent heart attacks should consult a physician before initiating NRT.<ref name=FDA101>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Smoking is known to cause cardiovascular diseases such as coronary heart disease, hypertension, heart attack, stroke, and peripheral artery disease. Cigarette smoking is the cause of 20% of all cardiovascular deaths in the United States, which is the leading cause of mortality.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Other conditionsEdit
Nicotine replacement therapies should be used cautiously in individuals with the following conditions: severe reactive airway diseases (for nasal spray), chronic nasal disorders such as sinusitis, polyps, rhinitis, or allergy (for nasal spray), diabetes (insulin-dependent), gastrointestinal diseases such as esophagitis, active gastric or peptic ulcer disease, liver problems, hyperthyroidism, pheochromocytoma, phenylketonuria (for lozenges), renal problems, and skin conditions such as psoriasis or dermatitis (for the transdermal patch).<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Mechanism of actionEdit
Nicotine replacement therapy works by reducing cravings due to nicotine addiction.<ref name=AHFS2015/><ref name="ReferenceB"/> Smoking cigarettes releases high doses of nicotine to the brain in a matter of seconds as opposed to low doses released over a period of minutes to hours by the various forms of nicotine replacement therapy.<ref name=Wad2016>Template:Cite journal</ref> Nicotine from NRT does not reach as high a concentration in the blood as does nicotine from smoke inhalation due to different absorption methods. NRT relies on systemic venous absorption, whereas nicotine from cigarettes reaches the arterial system.<ref name=Wad2016 /> Nicotine replacement products vary in the time it takes for the nicotine to enter the body and the total time nicotine stays in the body.<ref name="Rigotti"/> The more quickly a dose of nicotine is delivered and absorbed, the higher the addiction risk.<ref name=Parrott2015>Template:Cite journal</ref> It is possible to become dependent on some NRTs.<ref>Template:Cite journal</ref>
Nicotine patches are applied to the skin and continuously administer a stable dose of nicotine slowly over 16–24 hours.<ref name="Rigotti"/><ref name=Oncken>Template:Cite journal</ref> Nicotine gum, nicotine sprays, nicotine toothpicks, nicotine sublingual tablets, and nicotine lozenges administer nicotine orally with quicker nicotine uptake into the body but lasting a shorter amount of time.<ref name="Hasenfratz_1991">Template:Cite journal</ref> Nicotine inhalers are metered-dose inhalers Template:Citation needed that administer nicotine through the lungs and mucous membranes of the throat quickly, lasting for a short amount of time. For example, blood nicotine levels are the highest 5–10 minutes after using the nicotine nasal spray, 20 minutes after using a nicotine inhaler or chewing nicotine gum, and 2–4 hours after using a nicotine patch.<ref name="Rigotti"/><ref>Package insert monograph with Nicorette inhaler</ref>
Society and cultureEdit
NRT products were first approved for use in the United States in 1984.<ref name=AHFS2015/> Nicotine replacement products are on the World Health Organization's List of Essential Medicines.<ref name="WHO21st" /> They are available as generic medication.<ref name=AHFS2015/>
FormulationsEdit
| NRT Type | Device/package | Availability | citation | CitationClass=web
}}</ref><ref>{{#invoke:citation/CS1|citation |
CitationClass=web
}}</ref> |
|---|---|---|---|---|---|
| Patch | Pouch | Over-the-counter | 16 or 24 hours sustained-release transdermal patch | ||
| Lozenge | Blister pack | Over-the-counter | 20 to 30 minutes modified-release dosage tablet containing nicotine polacrilex | ||
| Sublingual tablets | Blister pack | Over-the-counter | Quickly dissolves to releases nicotine through a hard candy | ||
| Gum | Blister pack | Over-the-counter | Chewing the gum releases nicotine as a modified-release dosage | ||
| Mouth spray | Mouth spray bottle | Over-the-counter | Spraying a mist into the mouth administers nicotine for buccal administration | ||
| Vapour inhalator | Nicorette Inhalator: with 10 mg nicotine disposable cartridges | Over-the-counter | Resembles cigarettes; A disposable cartridge contains about 10 mg nicotine (about 40% is released). Multiple inhaling through the mouthpiece administers sufficient nicotine. | ||
| Pressurized Metered-dose inhaler (pMDI) | Prescription | Inhaling through the mouthpiece administers nicotine | |||
| Nasal spray | Nasal spray bottle | Prescription | Spraying a pump bottle into the nose administers nicotine | ||
| Toothpicks | Over-the-counter |
The nicotine patch is a once-daily, longer-acting form of NRT. An advantage of the nicotine patch is its simple compliance; it does not require active use throughout the day.<ref name=Wad2016 /> The gum, lozenge, sublingual tablet, oral inhaler, oral spray, and nasal spray are acutely dosed products, providing the user with the benefit and ability of self-titrating based on cravings.<ref name=Wad2016 />
Brand names include Commit Lozenge, Nicoderm, Nicogum, Nicorette, Nicotex, Nicotinell, and Thrive. NRT products contain similar pharmaceutical grade nicotine as is used in e-cigarettes.Template:Citation needed
MedicinesEdit
In 2015, the United States Public Health Service listed seven agents for the stopping of tobacco, which included five nicotine replacement treatments (nicotine patches, gum, lozenges, inhalers, and nasal sprays) and two oral medications (bupropion and varenicline). Other NRT options are available, including nicotine mouth sprays and sublingual tablets.<ref name="surgeongeneral.gov">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
DosingEdit
The dose of nicotine replacement therapy products is generally based on if the user is considered a heavy, average, or light smoker.<ref name="www.cancer.org" />
| Type of User | Dose of NRT | Amount of cigarettes | Amount of smokeless tobacco |
|---|---|---|---|
| Light | Lower | <10 cigarettes daily | <2 snuff cans or tobacco pouches weekly |
| Average | Moderate | 10–20 cigarettes daily | 2–3 snuff cans or tobacco pouches weekly |
| Heavy | Higher | 1 or more pack of cigarettes daily | >3 snuff cans or tobacco pouches weekly |
A cigarette delivers an average of 1 mg to 3 mg of the nicotine contained in it. NRT products typically aim to parallel this, but the amount of nicotine absorbed by the user is less than the original dose.
Nicotine nasal sprays are formulated in doses of lowest strength, available in 0.5 mg and 1 mg strengths.
Nicotine lozenges deliver doses as low as 1 mg up to 4 mg. It is not chewed as the gum would be, and dissolves in approximately 30 minutes.<ref name=Wad2016 /> This formulation may be preferred by those individuals who do not find gum chewing to be acceptable.
Nicotine gum is available in doses of 2 mg and 4 mg. Using 4 mg nicotine gum versus 2 mg gum increases the likelihood of successful smoking cessation.<ref name="Theodoulou_2023" /> When using the gum, acidic beverages like soda, coffee, or beer should be avoided fifteen minutes prior and during use because they can impede proper absorption of nicotine.<ref name=Wad2016 />
Nicotine inhalers come in 10 mg and 15 mg cartridge strengths and typically deliver around 4 mg in one dose.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The inhaler may be preferred in individuals who want to satisfy the hand-to-mouth ritual that smoking provides.<ref name=Wad2016 />
Transdermal patches deliver between 5 mg and 52.5 mg of nicotine, which results in plasma levels similar to that of heavy smokers. Combining nicotine patch treatment with a faster nicotine-delivery means, like nicotine gum or spray, improves the likelihood of successful treatment.<ref name="Theodoulou_2023" /><ref name="Hart2018" />
Not approved as NRTsEdit
Some smokeless consumer products available can function as alternative nicotine delivery systems (ANDS)<ref>Template:Cite journal</ref> but they have not received FDA approval as smoking-cessation therapy aids that are safe and effective.
Snus and nasal snuff also allow for nicotine administration outside of tobacco smoking.<ref>Template:Cite journal</ref> Nicotine pouches are described as similar to or a tobacco-free variant of snus. They are pre-portioned and are held in the user's lip or cheek allowing for sublingual or buccal delivery of flavors and high doses of nicotine. The small pouches are not like chewing tobacco, as the user does not need to spit since the contents of the pouches stay inside during use. Swedish pouches have been available on the American consumer market since at least 2016<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> but their popularity and controversy surged in 2019 and 2020. In the US and UK concerns have been raised that nicotine pouches are seemingly too similar to banned snus products, is aimed at teenagers, further complicating the youth vaping trend,<ref>Template:Cite news</ref> falling into the hands of adolescents easily, and are discrete enough to easily pass for regular gums or lozenges.<ref>Template:Cite news</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Nicotine infused toothpicks are another product that has been available in the United States since at least 2013. They can have a total nicotine delivery that is comparable to that of nicotine gum.<ref name="Hasenfratz_1991" /> Nicotine toothpicks generally are infused with food-grade flavorings and 1–3 mg of nicotine, which is similar to that of other oral-delivery nicotine products and some cigarettes.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> In spite of these similarities, as of 2018 they have been a subject of controversy. Online retailers have been under scrutiny for allowing their products to be too easily purchased by youth.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>Template:Cite news</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Various news outlets and school districts have expressed the concern that these products have a high appeal to minors wanting to experiment with nicotine due to; the multitude of sweet flavors offered, ease & speed of use, seeming innocuous, and having a discreet nature.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> In 2015, NRT sales fell for the first time since 2008 while sales for e-cigarettes or electronic nicotine delivery systems (ENDS) continued to increase at a substantial rate. The evidence is that UK smokers are trying to quit with e-cigarettes rather than NRT methods.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
E-cigarettes are often, although not always, designed to look and feel like cigarettes. They have been marketed as less harmful alternatives to cigarettes,<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> but very few are as yet approved as NRTs in any jurisdiction. Some electronic cigarettes have coarsely adjustable nicotine levels. Some healthcare groups have hesitated to recommend e-cigarettes for quitting smoking, because of limited evidence of effectiveness and safety.<ref name="Cochrane2014">Template:Cite journal</ref> However, more recent review show the opposite, possibly because of newer types of e‐cigarettes have better nicotine delivery than older one.<ref name="Cochrane2014" />
The U.S. Food and Drug Administration (FDA) has a list of additional tobacco products they are seeking to regulate, including electronic cigarettes.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Most approved NRT products have been approved for over 20 years,<ref>Template:Cite journal</ref> however the FDA has also approved nicotine inhalers as a form of NRT.<ref name=Drummond2014>Template:Cite journal</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>
Future approaches of NRT could include nicotine preloading, a true pulmonary inhaler, and nicotine vaccines.<ref name="Hart2018" /> Nicotine preloading, otherwise known as pre-cessation or pre-quitting NRT, has found that using the patch for a few weeks before the quit date produces significantly higher quit rates than if it was started on the quit day.<ref name="Hart2018" /> The true pulmonary inhaler would deliver nicotine to the lungs in a manner that more resembles cigarette smoking, which would provide better relief of background cravings as well as acute cravings.<ref name="Hart2018" /> Nicotine vaccines are under investigation as a method to treat tobacco dependence through priming the body to mount an immune response against nicotine.<ref name="Hart2018" />
ReferencesEdit
External linksEdit
- {{#invoke:citation/CS1|citation
|CitationClass=web }}
- University of Wisconsin Center for Tobacco Research and Intervention
- Recommendations for special populations
- {{#invoke:citation/CS1|citation
|CitationClass=web }}
- {{#invoke:citation/CS1|citation
|CitationClass=web }}
- {{#invoke:citation/CS1|citation
|CitationClass=web }}
- {{#invoke:citation/CS1|citation
|CitationClass=web }}
- {{#invoke:citation/CS1|citation
|CitationClass=web }}