Vyvanse Nicotine Interaction Profile: What Clinicians and Patients Need to Know

Is Vyvanse contraindicated with nicotine?

No. The Vyvanse label lists two contraindications: known hypersensitivity to amphetamine products or other ingredients, and use of a monoamine oxidase inhibitor, or within 14 days of stopping one, because of hypertensive crisis risk [1]. Nicotine in any form is not one of them. The label's drug-interaction table names MAO inhibitors, serotonergic drugs, CYP2D6 inhibitors, urinary alkalinizing agents, urinary acidifying agents and tricyclic antidepressants [1]. Nicotine does not appear in that table.

That is not the same as a clean bill of health. Each drug is documented to push the cardiovascular system in the same direction on its own, and what follows describes that overlap.

What the Vyvanse label says about heart rate and blood pressure

The label states that CNS stimulants, including Vyvanse, raise blood pressure by a mean of about 2 to 4 mm Hg and heart rate by about 3 to 6 bpm, with larger increases in some patients, and says to monitor all treated patients for tachycardia and hypertension [1].

In the 4-week adult ADHD trial, increased blood pressure was reported in 3% of patients on Vyvanse versus 0% on placebo, increased heart rate in 2% versus 0%, and palpitations in 2% versus 0% [1]. Decreased appetite was reported in 27% versus 2%, insomnia in 27% versus 8%, and dry mouth in 26% versus 3% [1].

The label draws a harder line for people with heart disease. Sudden death has been reported in patients with structural cardiac abnormalities or other serious cardiac disease treated with CNS stimulants at ADHD doses, and the label says to avoid Vyvanse in known structural cardiac abnormalities, cardiomyopathy, serious cardiac arrhythmia, coronary artery disease or other serious cardiac disease [1]. Before treatment, it calls for a careful history, a family history of sudden death or ventricular arrhythmia, and a physical exam [1].

The label also warns about peripheral vasculopathy, including Raynaud's phenomenon, with digital ulceration and soft tissue breakdown reported as possible consequences [1].

What nicotine does to the same systems

Nicotine is a stimulant that produces peripheral vasoconstriction, tachycardia and higher blood pressure, and tolerance does not develop to its catecholamine-releasing effects [2]. Cigarettes deliver nicotine faster and usually in higher doses than nicotine replacement products, so the cardiovascular effects are more intense when the nicotine comes from smoking [5]. Cigarette smoking also raises blood coagulability, which transdermal nicotine does not appear to do [5].

This page found no data from patients taking lisdexamfetamine and nicotine together, so the size of any combined rise in an individual is not quantified here.

Does smoking change how much Vyvanse is in your blood?

Cigarette smoke induces the liver enzyme CYP1A2, and polycyclic aromatic hydrocarbons in the smoke are believed to be responsible [2][3]. Nicotine itself is not the inducer: the effect on hepatic enzymes is not related to the nicotine component of tobacco, so nicotine replacement will not reproduce it [4].

The reviews cited here name CYP1A2 substrates such as caffeine, clozapine, fluvoxamine, olanzapine, tacrine and theophylline as the main smoking interactions [3]. Lisdexamfetamine is an inactive prodrug converted to dextroamphetamine mainly in red blood cells, not by cytochrome P450 enzymes [1]. The Vyvanse label's interaction table does not list smoking or nicotine [1].

Quitting is where the enzyme story becomes practical. In 12 heavy smokers who stopped abruptly, caffeine clearance fell 36.1%, from 2.47 to 1.53 mL/min/kg, with an apparent half-life of the decline of 38.6 hours [6]. A review names warfarin, olanzapine, clozapine and theophylline as drugs where dose adjustment is clearly indicated when smoking stops [4].

Appetite and weight

Decreased appetite is one of the most common Vyvanse adverse reactions: 27% versus 2% on placebo in the adult ADHD trial, and 39% versus 4% in children aged 6 to 12 [1]. Decreased weight was reported in 9% of children aged 6 to 12 versus 1% on placebo, and the label notes that stimulants are associated with weight loss and slowing of growth rate in children, with height and weight to be monitored [1]. The label also states that Vyvanse is not indicated for weight loss and that its safety and effectiveness for obesity have not been established [1].

Nicotine lowers food intake too. In mice, activation of hypothalamic alpha3beta4 nicotinic receptors switched on POMC neurons, and that pathway was critical for nicotine's reduction in food intake and body weight [7]. That is animal work; it does not quantify what nicotine does to a person's appetite or whether it adds to Vyvanse's effect.

Sleep and nicotine withdrawal

Insomnia was reported in 27% of adults on Vyvanse versus 8% on placebo in the ADHD trial [1], and the label says to take Vyvanse in the morning and avoid afternoon doses because of insomnia [1]. On the nicotine side, significant withdrawal symptoms occur in at least half of smokers attempting to quit, and withdrawal appears to produce clinically significant distress and impairment [8]. Withdrawal can also mimic or induce depression [9].

Does nicotine change how well Vyvanse works for ADHD?

The Vyvanse label gives no separate ADHD dosing instructions for people who smoke or use nicotine. Its usual dosing is a 30 mg starting dose every morning, adjusted in 10 mg or 20 mg steps at about weekly intervals to a maximum of 70 mg a day [1].

Nicotine has measurable cognitive effects of its own. A meta-analysis of 41 double-blind, placebo-controlled laboratory studies found positive effects on fine motor function, alerting attention accuracy and reaction time, orienting attention reaction time, short-term episodic memory accuracy and working memory reaction time, with effect sizes from 0.16 to 0.44 [10]. Those were acute laboratory studies in healthy adult nonsmokers or smokers who were not, or only minimally, tobacco-deprived. They were not ADHD treatment studies, and they do not show whether nicotine changes the effect of a Vyvanse dose.

What the label says to watch

The Vyvanse label asks for blood pressure and pulse monitoring in every treated patient, and for a cardiac history and physical exam before starting [1]. It also says careful observation for digital changes from peripheral vasculopathy is necessary during treatment, with rheumatology referral possibly appropriate if signs develop [1]. The Vyvanse label reports peripheral vasculopathy with CNS stimulants in all age groups [1], and nicotine narrows peripheral blood vessels as well [2].