Nicotine

Nicotine replacement products are used to ease the process of quitting smoking by reducing withdrawal symptoms and cravings. All supported products share this core purpose, though they differ by form and brand.

• Nicorette 4mg Cinnamon Surge, Lil Drug Store gum, and related buccal gum products reduce withdrawal symptoms, including nicotine craving, associated with quitting smoking
• Equate Nicotine, Basic Care Nicotine, exchange select nicotine, care one nicotine, foster and thrive nicotine, Good Sense Nicotine, and other lozenge products reduce withdrawal symptoms, including nicotine craving, associated with quitting smoking
• Nicotrol nasal spray reduces withdrawal symptoms, including nicotine craving, associated with quitting smoking
• Habitrol Nicotine Polacrilex 4 mg Coated Cinnamon gum reduces withdrawal symptoms, including nicotine craving, associated with quitting smoking

Nicotine is the addictive chemical in tobacco. In replacement products, it works by binding to nicotinic-cholinergic receptors — specialized docking sites on nerve cells — in the brain and throughout the body. This triggers the release of brain chemicals including dopamine, norepinephrine, and serotonin, producing the stimulating and rewarding effects that make nicotine so habit-forming. Replacement products deliver lower, more controlled levels of nicotine than cigarettes, which is enough to blunt cravings and withdrawal without the toxic byproducts of burning tobacco.

Nicotine also raises heart rate and blood pressure through a process called peripheral vasoconstriction (narrowing of blood vessels) and stimulation of the nervous system. Over time, tolerance develops — meaning the same dose produces less effect — but the body does not build tolerance to nicotine's effects on stress hormones, which is why quitting can shift how some other medications work.

The right form and timing depend on your smoking habits. A general 12-week schedule applies to gum and lozenge products: use more frequently in weeks 1–6, then taper off in weeks 7–9, and use even less in weeks 10–12. Nicotrol nasal spray is dosed by your healthcare provider's instructions.

• Gum: Chew slowly until a tingle is felt, then park between cheek and gum; repeat for about 30 minutes. Avoid food and drink for 15 minutes before use.
• Lozenge: Let dissolve slowly in the mouth over 20–30 minutes. Do not chew or swallow. Avoid food and drink for 15 minutes before or during use.
• Nasal spray (Nicotrol NS): One dose equals two sprays — one in each nostril. Follow your prescriber's schedule.

Always follow the directions on your specific product and talk to your prescriber or pharmacist if you have questions.

Side effects vary by form, but some are common across nicotine replacement products:

• Nasal irritation, runny nose, sneezing, or watery eyes (especially with Nicotrol NS nasal spray)
• Throat irritation or coughing
• Nausea or upset stomach
• Headache
• Dizziness
• Mouth, gum, or jaw discomfort
• Hiccups or heartburn (especially if using lozenges or gum too quickly)
• Palpitations (awareness of your heartbeat)

Stop use and seek medical attention if you experience an irregular heartbeat, symptoms of nicotine overdose (nausea, vomiting, rapid heartbeat, dizziness, weakness), or signs of an allergic reaction such as difficulty breathing or a rash.

• Heart and blood pressure: Nicotine raises heart rate and blood pressure. If you have heart disease, a recent heart attack, irregular heartbeat, or uncontrolled high blood pressure, talk to your doctor before use.
• Pregnancy and breastfeeding: Try to quit smoking without nicotine replacement first. If you need it, only use under healthcare provider guidance — the risks to a baby are not fully known, but these products are considered safer than smoking.
• Children and pets: Even small amounts of nicotine can seriously harm or kill a child or pet. Keep all products locked away and dispose of used pieces safely.
• Overdose risk: Signs of too much nicotine include nausea, vomiting, rapid heartbeat, dizziness, and weakness. Call Poison Control (1-800-222-1222) immediately if this occurs.
• Other conditions: Ask a doctor before use if you have a stomach ulcer, diabetes, a history of seizures, or are on a sodium-restricted diet.

Quitting smoking — with or without nicotine replacement — changes how your body processes several common medications. Let your doctor and pharmacist know you're quitting so doses can be adjusted if needed.

• Acetaminophen, caffeine, theophylline, propranolol, imipramine, oxazepam, pentazocine: Blood levels may rise when you stop smoking; doses may need to be lowered.
• Insulin: Stopping smoking can increase insulin absorption under the skin; your dose may need adjustment to avoid low blood sugar.
• Blood pressure drugs (prazosin, labetalol): Less nicotine means fewer stress hormones circulating, which may enhance their effect.
• Stimulant heart/blood pressure drugs (isoproterenol, phenylephrine): May become less effective after quitting; doses may need to be increased.
• Nasal decongestants (e.g., xylometazoline): When used with Nicotrol NS, these can slow how quickly nicotine is absorbed through the nose.
• Prescription medicines for depression or asthma: Doses may need adjustment; always tell your prescriber you are quitting.

This is not a complete list of interactions. Always talk with your doctor or pharmacist before starting, stopping, or changing any medication.

• Do not use if you are allergic to nicotine or any ingredient in the product
• Talk to a doctor first if you have heart disease, a recent heart attack, or an irregular heartbeat
• Talk to a doctor first if you have high blood pressure not controlled with medication
• Talk to a doctor first if you have a stomach ulcer or diabetes
• Talk to a doctor first if you have a history of seizures
• Talk to a doctor first if you are on a sodium-restricted diet
• If pregnant or breastfeeding, only use on the advice of a healthcare provider
• Under 18 years of age: ask a doctor before use — no studies have confirmed safety or effectiveness in this age group
• Tell your doctor or pharmacist about all medications you take, especially prescriptions for depression or asthma

Too much nicotine can cause nausea, vomiting, abdominal pain, diarrhea, sweating, flushing, dizziness, confusion, weakness, palpitations, and in severe cases, low blood pressure and difficulty breathing. If you suspect a nicotine overdose — especially in a child or pet who may have swallowed a product — call Poison Control immediately at 1-800-222-1222 or get emergency medical help right away.

Nicotine causes the heart to beat faster (tachycardia) and raises blood pressure by narrowing blood vessels (peripheral vasoconstriction). It also stimulates the release of stress hormones like cortisol and catecholamines — effects that do not diminish with repeated use (no tolerance develops to these). At lower doses, nicotine's stimulating effects on the brain dominate; at higher doses, its rewarding, calming effects take over, which is central to its addictive potential.

Withdrawal from nicotine can bring on craving, irritability, anxiety, restlessness, poor concentration, sleep problems, increased appetite, and weight gain. Nicotine replacement eases these symptoms by maintaining lower but stable nicotine levels in the body.

When Nicotrol NS nasal spray is used, about 53% of the nicotine delivered enters the bloodstream, with peak blood levels reached in as little as 4–15 minutes — faster than most other nicotine replacement forms. The absorption half-life (the time for half the dose to be absorbed) is roughly 3 minutes for the nasal route. Nicotine distributes widely throughout the body, with a volume of distribution of approximately 2–3 liters per kilogram of body weight.

Having a cold or nasal congestion can reduce and slow absorption of Nicotrol NS, and using a nasal decongestant at the same time slows it further. Blood levels vary considerably from person to person, so the experience of using the spray can differ significantly between individuals.

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