Vyvanse 20mg Capsules
Overview
What is this medicine?
How to Use This Medicine
To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided to you and follow the instructions closely. Take your medication at the same time every day, with or without food. To minimize the risk of sleep disturbances, avoid taking your medication late in the day.
When taking your medication, swallow the capsule whole - do not chew, break, or crush it. However, if you need to, you can open the capsule and mix the powder with water, orange juice, or yogurt. If the powder clumps together, you can use a spoon to gently break it apart. Mix the powder well with your chosen liquid. If you mix the medication with a liquid, take it immediately - do not store it for later use.
Storing and Disposing of Your Medication
Store your medication at room temperature, away from light and moisture. Keep it in a dry place, such as a closet or drawer, and avoid storing it in the bathroom. To prevent accidental ingestion, keep your medication in a safe and secure location where children and pets cannot access it. Consider using a locked box or cabinet to store your medication. Keep all medications out of reach of pets.
When disposing of your medication, do not flush it down the toilet or pour it down the drain unless you are instructed to do so. Instead, check with your pharmacist for guidance on the best way to dispose of unused or expired medication. You may also want to explore local drug take-back programs in your area.
What to Do If You Miss a Dose
If you miss a dose, take it as soon as you remember. However, if it is close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for a missed dose.
Lifestyle & Tips
- Take exactly as prescribed, usually once daily in the morning, with or without food.
- Do not take in the afternoon or evening as it may cause sleep problems.
- Swallow capsules whole, or open and mix the entire contents with yogurt, water, or orange juice and consume immediately.
- Avoid alcohol, as it can increase side effects.
- Maintain a healthy diet and regular exercise.
- Report any new or worsening psychiatric symptoms or cardiovascular symptoms immediately.
Available Forms & Alternatives
Available Strengths:
- Vyvanse 70mg Capsules
- Vyvanse 50mg Capsules
- Vyvanse 30mg Capsules
- Vyvanse 60mg Capsules
- Vyvanse 40mg Capsules
- Vyvanse 20mg Capsules
- Vyvanse 10mg Capsules
- Vyvanse 10mg Chewable Tablets
- Vyvanse 20mg Chewable Tablets
- Vyvanse 30mg Chewable Tablets
- Vyvanse 40mg Chewable Tablets
- Vyvanse 50mg Chewable Tablets
- Vyvanse 60mg Chewable Tablets
Generic Alternatives:
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
BLACK BOX WARNING
Side Effects
Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek medical attention immediately:
Signs of an allergic reaction, such as:
+ Rash or hives
+ Itching or red, swollen, blistered, or peeling skin (with or without fever)
+ Wheezing or tightness in the chest or throat
+ Difficulty breathing, swallowing, or talking
+ Unusual hoarseness or swelling of the mouth, face, lips, tongue, or throat
Signs of high blood pressure, including:
+ Severe headache or dizziness
+ Fainting or changes in eyesight
Fast or abnormal heartbeat
Trouble controlling body movements
Uncontrollable sounds, such as humming, throat clearing, yelling, or making loud noises
Changes in skin color (pale, blue, gray, purple, or red) on hands, feet, or other areas
Numbness, pain, tingling, or cold sensations in hands or feet
Sores or wounds on fingers or toes
Muscle pain or weakness, dark urine, or difficulty urinating
If you have a heart condition or defect, inform your doctor, as sudden deaths have occurred in people with certain heart problems. Additionally, if a family member has an abnormal heartbeat or died suddenly, notify your doctor. Seek immediate medical help if you experience:
Chest pain
Abnormal heartbeat
Shortness of breath
Severe dizziness or fainting
A potentially life-threatening condition called serotonin syndrome may occur if you take this medication with certain other drugs. Call your doctor right away if you experience:
Agitation
Balance problems
Confusion
Hallucinations
Fever
Fast or abnormal heartbeat
Flushing
Muscle twitching or stiffness
Seizures
Shivering or shaking
Excessive sweating
Severe diarrhea, stomach upset, or vomiting
Severe headache
Other Possible Side Effects
Most people do not experience severe side effects, but some may occur. If you notice any of the following side effects or any other unusual symptoms, contact your doctor or seek medical attention:
Anxiety
Constipation, diarrhea, stomach pain, upset stomach, vomiting, or decreased appetite
Dry mouth
Feeling jittery
Weight loss
Difficulty sleeping
* Dizziness
This is not an exhaustive list of potential side effects. If you have questions or concerns, consult your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Chest pain, shortness of breath, fainting
- Numbness, coolness, or pain in fingers or toes
- Unexplained wounds on fingers or toes
- New or worsening aggression or hostility
- Seeing or hearing things that are not real (hallucinations)
- Believing things that are not true (delusions)
- New or worsening tics (uncontrolled movements or sounds)
- Unusual changes in mood or behavior (e.g., extreme happiness, irritability, racing thoughts)
- Severe headache, blurred vision, confusion, seizures (signs of hypertensive crisis)
Before Using This Medicine
It is essential to inform your doctor about the following conditions to ensure safe treatment:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Describe the allergic reaction you experienced, including the symptoms that occurred.
A family history of certain health conditions, including:
+ Blood vessel disease
+ High blood pressure
+ Heart structure problems or other heart-related issues
+ Tourette's syndrome or tics
Your medical history, particularly if you have been diagnosed with:
+ Glaucoma
+ Agitation
+ Anxiety
+ Overactive thyroid
Any past medical conditions, including:
+ Drug abuse
+ Stroke
Current medications, especially:
+ Acetazolamide
+ Sodium bicarbonate
Recent use (within the last 14 days) of certain medications for depression or Parkinson's disease, such as:
+ Isocarboxazid
+ Phenelzine
+ Tranylcypromine
+ Selegiline
+ Rasagiline (note: combining these medications can lead to very high blood pressure)
Use of other specific medications, including:
+ Linezolid
+ Methylene blue
If you are breastfeeding, as you should not breastfeed while taking this medication
This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist to ensure safe treatment. Do not start, stop, or change the dose of any medication without consulting your doctor first.
Precautions & Cautions
It is crucial that you inform all of your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication. This drug is not intended for weight loss, so if you have any questions or concerns, be sure to discuss them with your doctor.
Safety Precautions
Until you are familiar with how this medication affects you, avoid driving and other activities that require alertness and clear vision. If you have been taking this medication for an extended period or at high doses, you may develop tolerance, which means it may not work as effectively and you may need higher doses to achieve the same effect. If you notice that the medication is not working as well as it should, contact your doctor. Do not take more than the prescribed dose.
Risk of Dependence and Withdrawal
Long-term or regular use of this medication can lead to dependence. Stopping the medication abruptly may result in withdrawal symptoms. Before reducing the dose or stopping the medication, consult with your doctor and follow their instructions. If you experience any adverse effects, report them to your doctor.
Heart-Related Precautions
You may need to undergo heart tests before starting this medication. If you have any questions or concerns, discuss them with your doctor. This medication may cause high blood pressure, so it is essential to monitor your blood pressure and heart rate as directed by your doctor.
Interactions with Other Medications and Lab Tests
This medication may affect certain lab tests, so inform all of your healthcare providers and lab personnel that you are taking it. Before using over-the-counter (OTC) products that may increase blood pressure, such as cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and certain natural products or aids, consult with your doctor.
Severe Skin Reactions
A severe skin reaction, known as Stevens-Johnson syndrome or toxic epidermal necrolysis, may occur. This condition can cause severe health problems that may be permanent and, in some cases, fatal. Seek immediate medical attention if you experience symptoms such as red, swollen, blistered, or peeling skin (with or without fever), red or irritated eyes, or sores in your mouth, throat, nose, or eyes.
Behavior and Mood Changes
This medication may cause changes in behavior and mood, including hallucinations, anger, and changes in thinking. If you or a family member have a history of mental or mood problems, such as depression or bipolar illness, or if a family member has committed suicide, inform your doctor. If you experience hallucinations, changes in behavior, or signs of mood changes such as depression, thoughts of suicide, nervousness, emotional ups and downs, abnormal thinking, anxiety, or loss of interest in life, contact your doctor immediately.
Effects on Growth in Children and Teens
This medication may affect growth in children and teens. Regular growth checks may be necessary. Discuss any concerns with your doctor.
Use in Children
This medication is not approved for use in children under the age of 6. The risk of long-term weight loss is increased in children under 6 years old.
Pregnancy and Breastfeeding
If you are pregnant or plan to become pregnant, inform your doctor. You will need to discuss the benefits and risks of using this medication during pregnancy.
Overdose Information
Overdose Symptoms:
- Restlessness
- Tremor
- Hyperreflexia
- Rapid breathing
- Confusion
- Assaultiveness
- Hallucinations
- Panic states
- High fever
- Rhabdomyolysis
- Arrhythmias
- Hypertension or hypotension
- Circulatory collapse
- Nausea, vomiting, diarrhea
- Abdominal cramps
- Convulsions
- Coma
What to Do:
Seek immediate medical attention. Call 911 or Poison Control at 1-800-222-1222. Management includes symptomatic treatment, gastric lavage, activated charcoal, and sedation for CNS overstimulation.
Drug Interactions
Contraindicated Interactions
- Monoamine Oxidase Inhibitors (MAOIs) - concurrent use or within 14 days of MAOI discontinuation (risk of hypertensive crisis)
Major Interactions
- Serotonergic drugs (e.g., SSRIs, SNRIs, TCAs, triptans, fentanyl, lithium, tramadol, St. John's Wort) - risk of serotonin syndrome
- Antihypertensives - may counteract hypotensive effect
- Alkalinizing agents (e.g., sodium bicarbonate, acetazolamide, thiazide diuretics) - increase dextroamphetamine blood levels and prolong half-life
- Acidifying agents (e.g., ascorbic acid, ammonium chloride) - decrease dextroamphetamine blood levels and shorten half-life
- Halogenated anesthetics - risk of arrhythmias
Moderate Interactions
- Antipsychotics (e.g., phenothiazines, haloperidol) - may antagonize stimulant effects
- Lithium - may inhibit stimulant effects
- Tricyclic Antidepressants (TCAs) - may increase cardiovascular effects of stimulants
- Proton Pump Inhibitors (PPIs) / H2 Blockers - generally no significant interaction due to non-gastric conversion of lisdexamfetamine
Minor Interactions
- Not specifically listed as minor for lisdexamfetamine, but general caution with other CNS stimulants or depressants.
Monitoring
Baseline Monitoring
Rationale: Stimulants can cause increases in BP and HR; screen for pre-existing cardiovascular conditions.
Timing: Prior to initiation
Rationale: Monitor for growth suppression in pediatric patients.
Timing: Prior to initiation
Rationale: Stimulants can exacerbate or unmask psychiatric symptoms.
Timing: Prior to initiation
Rationale: Screen for underlying cardiac risk factors.
Timing: Prior to initiation
Routine Monitoring
Frequency: At each dose adjustment and periodically thereafter (e.g., every 3-6 months)
Target: Within normal limits for age/patient
Action Threshold: Significant or sustained increases (e.g., >10-20 mmHg systolic/diastolic, >10-20 bpm HR) warrant further evaluation or dose adjustment.
Frequency: Every 3-6 months (pediatric patients)
Target: Normal growth trajectory
Action Threshold: Significant growth deceleration or weight loss may require dose reduction or drug holiday.
Frequency: At each visit
Target: Absence of new or worsening symptoms
Action Threshold: Emergence or worsening of symptoms may require dose adjustment or discontinuation.
Frequency: At each visit
Target: No signs of abuse or diversion
Action Threshold: Signs of abuse or diversion require intervention and re-evaluation of treatment plan.
Symptom Monitoring
- Chest pain
- Shortness of breath
- Syncope
- Palpitations
- New or worsening aggression
- Hostility
- Psychotic symptoms (e.g., hallucinations, delusions)
- Manic symptoms
- Motor or vocal tics
- Numbness, coolness, or pain in extremities (Raynaud's phenomenon)
- Unexplained wounds on fingers or toes
Special Patient Groups
Pregnancy
Use during pregnancy should be considered only if the potential benefit justifies the potential risk to the fetus. Amphetamines can cause fetal harm, including premature birth and low birth weight. Neonates exposed to amphetamines during pregnancy may experience withdrawal symptoms.
Trimester-Specific Risks:
Lactation
Lisdexamfetamine and its active metabolite, dextroamphetamine, are excreted into human milk. Due to the potential for serious adverse reactions in breastfed infants (e.g., agitation, insomnia, anorexia, reduced weight gain), advise mothers not to breastfeed during treatment with Vyvanse.
Pediatric Use
Approved for ADHD in children 6 years and older. Monitor growth (height and weight) carefully. Long-term effects on growth have been observed with stimulant use.
Geriatric Use
Clinical studies of Vyvanse did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
Clinical Information
Clinical Pearls
- Vyvanse is a prodrug, meaning its conversion to dextroamphetamine occurs in the blood, not the GI tract, which may reduce abuse potential by injection or snorting and provides a smoother, longer-lasting effect compared to immediate-release amphetamines.
- The 20mg capsule contains 20mg of lisdexamfetamine dimesylate, which is equivalent to 5.8mg of dextroamphetamine base.
- Patients should be advised to take Vyvanse in the morning to avoid insomnia.
- Capsules can be opened and mixed with water, orange juice, or yogurt for patients who have difficulty swallowing pills.
- Careful cardiovascular assessment is crucial before initiating therapy due to the risk of increased blood pressure and heart rate.
- Monitor for emergence or exacerbation of psychiatric symptoms, especially in patients with a history of bipolar disorder or psychosis.
Alternative Therapies
- Methylphenidate (e.g., Ritalin, Concerta, Focalin)
- Amphetamine/dextroamphetamine (e.g., Adderall, Mydayis)
- Atomoxetine (Strattera)
- Guanfacine extended-release (Intuniv)
- Clonidine extended-release (Kapvay)
- Bupropion (Wellbutrin - off-label for ADHD)
- Cognitive Behavioral Therapy (CBT) for ADHD and BED
- Other psychotherapies for BED
Cost & Coverage
General Drug Facts
This medication is accompanied by a Medication Guide, which provides crucial information about its use. Please read this guide carefully and review it again whenever you receive a refill. If you have any questions or concerns about this medication, don't hesitate to consult with your doctor, pharmacist, or other healthcare provider.
In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When reporting the incident, be prepared to provide details about the medication taken, the amount, and the time it occurred.