Attentho

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Attentho

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Attentho

Quick Facts

Property Description
Active ingredient Atomoxetine hydrochloride
Form Oral capsule (long-acting formulation)
Pharmacological class Selective Norepinephrine Reuptake Inhibitor (SNRI)
General purpose Supports attention, focus, and impulse control
Origin Synthetic small molecule

What Type of Medicine is Attentho (Atomoxetine)?

Attentho is a prescription-only medication containing the active ingredient Atomoxetine hydrochloride, which is fundamentally classified as a non-stimulant agent. This substance belongs to the pharmacological class of Selective Norepinephrine Reuptake Inhibitors (SNRIs). As a chemically synthetic single-ingredient product, Atomoxetine is designed to modulate the noradrenergic system without the broader central nervous system effects associated with traditional controlled stimulants.

Composition and Form: The Oral Capsule

Attentho is exclusively presented as an oral capsule for the systemic route of administration. The capsule contains Atomoxetine hydrochloride and an inert pharmaceutical base, which may include excipients necessary for formulating a long-acting formulation. This specific physical form is often utilized to ensure the steady release of the active substance over a full day. The design of the drug entity as a single-ingredient, long-acting capsule aims to provide reliable pharmacological support necessary for sustained functional benefit, which is especially relevant for managing the consistent daily needs of pediatric patients and adolescents.

General Purpose of this Non-Stimulant Agent

The primary, high-level purpose of Attentho is to assist individuals, including pediatric patients, adolescents, and adults, with core difficulties related to attention, impulse control, and organization. This medication is clinically recognized for its ability to provide support for focus without requiring the scheduling and monitoring associated with stimulant use. Atomoxetine is considered an effective option for these functional areas, offering an alternative to stimulant-based treatments. The non-stimulant approach can provide meaningful improvements in executive function and sustained concentration.

What side effects are possible with Attentho?

Possible side effects and safety information

The official safety profile for Attentho (Atomoxetine) is defined by regulatory documents that classify potential effects by frequency and physiological system. This structure is intended to provide a clear description of the medicine’s safety characteristics as determined by government authorities.


Frequency-Classified Adverse Reactions

The most frequently reported adverse reactions listed in official documentation are categorized as:

  • Very Common (≥1/10): Headache, somnolence, abdominal pain, nausea, vomiting, and decreased appetite.
  • Common (≥1/100 to <1/10): Insomnia, irritability, anxiety, dizziness, constipation, dry mouth (xerostomia), increased heart rate, and elevated blood pressure.
  • Uncommon (≥1/1,000 to <1/100): Seizure, syncope, QT interval prolongation, aggression, hostility, and suicide-related events (ideation).

Serious Safety Considerations and Restrictions

Official regulatory sources define clinically significant risks and limitations on use. Serious adverse reactions documented in labeling include a Black Box Warning concerning the increased risk of suicidal ideation in children and adolescents, particularly early during treatment or following dose changes. Other major warnings describe the potential for severe liver injury (including acute hepatic failure), serious cardiovascular events, and the emergence of psychotic or manic symptoms.

Usage of Attentho is contraindicated in specific medical conditions, including narrow-angle glaucoma, known pheochromocytoma, and in patients with severe cardiovascular or cerebrovascular disorders. The medicine must not be used concurrently with or within 14 days of discontinuing a Monoamine Oxidase Inhibitor (MAOI). Safety notes also emphasize that systemic exposure is substantially higher in patients identified as CYP2D6 Poor Metabolizers and that growth monitoring is required for children and adolescents during use.

Overdose and Emergency Response

Overdose Manifestations

The official regulatory profile for an overdose of Atomoxetine describes a specific set of clinical manifestations. Documented presentations in overdose cases often include neurological and behavioral changes such as somnolence, agitation, hyperactivity, tremor, and dizziness, alongside physical signs like tachycardia (rapid heart rate), mydriasis (pupil dilation), and vomiting.


When to Seek Immediate Help

Regulatory authorities explicitly state that patients must seek immediate medical attention if an overdose is suspected. This urgency is driven by the potential for serious cardiac complications, including QT prolongation, and the documented, though rare, possibility of seizures. Urgent medical services must be contacted immediately if a person has collapsed, is experiencing trouble breathing, or cannot be awakened.


Official Management Profile

The management of an overdose is limited to symptomatic and supportive treatment, as no specific antidote is known for Atomoxetine. Due to the risk of cardiovascular events, treatment procedures require continuous cardiac monitoring and frequent observation of vital signs. Procedures like activated charcoal or gastric lavage may be indicated shortly after ingestion to limit absorption. The highest documented single acute ingestions have been reported in the adolescent population.

Therapeutic Uses of Attentho

What Attentho Treats: Main Uses and Benefits

Attentho is primarily utilized for the therapeutic management of Attention-Deficit/Hyperactivity Disorder (ADHD) in children (aged 6 and older), adolescents, and adults. The medication is applied as part of a comprehensive treatment program for managing chronic, persistent symptoms that create noticeable functional strain.

The primary therapeutic use is in conditions characterized by symptoms of increased neurological activity that significantly interfere with daily functioning. It is applied in addressing symptom clusters related to the core manifestations of ADHD: Inattention, Hyperactivity, and Impulsivity. Attentho is often used during phases when symptoms become more noticeable as a non-stimulant alternative for individuals who cannot tolerate traditional stimulant medication or for those with certain comorbid conditions. This provides supportive relief that contributes to improved comfort during periods of heightened symptoms throughout the day.

“Managing these challenging manifestations may assist with maintaining functional stability and supports patients during episodes of heightened discomfort.”

The medication is commonly used for managing the overall symptom load of ADHD, and provides supportive therapeutic benefit to patients whose symptoms are present in multiple settings.


Quick Fact: Support for Inattention Attentho may be applied in managing symptom clusters that interfere with daily comfort, such as chronic disorganization, difficulty with task completion, and forgetfulness, and assists with maintaining functional stability.

Eligibility and Restrictions for Use

Who Can and Cannot Use Attentho?

The official eligibility for Attentho (Atomoxetine) is strictly defined by government regulatory documents, establishing specific rules for use across different patient populations.

Approved and Restricted Populations The medicine is approved for use in children 6 years of age and older, adolescents, and adults. Use in children under 6 years of age is not established, and pharmacokinetics in the geriatric population have not been evaluated.

Category Official Regulatory Status
Approved Ages Children 6 years and older, adolescents, and adults.
Hepatic Impairment Use is permitted only with a mandated reduction in dosage (50% for moderate, 75% for severe insufficiency).
Renal Impairment No dosage adjustment is necessary for any degree of renal impairment.

Absolute Contraindications Attentho must not be used by specific populations due to the risk of severe reactions. Contraindications include patients with known hypersensitivity to the drug, those with narrow-angle glaucoma, and individuals with pheochromocytoma or a history of the condition. The medicine is also strictly prohibited for patients currently taking or who have taken a Monoamine Oxidase Inhibitor (MAOI) within the last 14 days. Children and adolescents with serious structural cardiac abnormalities should also not use this medicine.

Pregnancy and Lactation Status Official labeling advises that use during pregnancy and lactation should occur only if the potential benefit justifies the potential risk to the fetus or infant.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory documents define specific substance classes and conditions that interact with Atomoxetine (Attentho), categorized by the type of change they cause to the drug's disposition or effects.

Pharmacokinetic and Metabolic Interactions

Classification Interacting Agents / Conditions Regulatory Effect
Metabolic Inhibition Potent CYP2D6 Inhibitors (e.g., Fluoxetine, Paroxetine, Quinidine) Significantly increase Atomoxetine systemic exposure (AUC and C max) in Extensive Metabolizers.
Reduced Clearance Moderate or Severe Hepatic Impairment Reduced systemic clearance resulting in increased plasma concentrations.
Genetic Variability CYP2D6 Poor Metabolizers (PMs) Naturally higher systemic exposure compared to Extensive Metabolizers (EMs).

Pharmacodynamic and Additive Effects

Atomoxetine's noradrenergic activity necessitates caution when combined with agents that also affect the cardiovascular system or central monoamine levels:

  • Systemically-administered Beta2 Agonists: Co-administration may potentiate the cardiovascular action of the Beta2 agonist, resulting in documented increases in heart rate and blood pressure.
  • QT-prolonging Drugs: Caution is officially advised for use with other agents known to prolong the QT interval, due to the risk of additive effects on cardiac rhythm.
  • Other Pressor Agents: Co-use with indirect sympathomimetics or other pressor agents is cautioned due to potential additive effects on blood pressure and heart rate.
  • Other Serotonergic Drugs: Caution is noted due to the potential for an additive effect leading to Serotonin Syndrome.

Mandatory Regulatory Constraints

  • Monoamine Oxidase Inhibitors (MAOIs): Atomoxetine is strictly contraindicated for co-administration with MAOIs (including Linezolid and intravenous Methylene Blue) and requires a mandatory mathbf14 -day washout period when switching between the two treatments.
  • Food Interaction: A high-fat meal results in a drug–food interaction that reduces the rate of absorption (lowering C max by 37%) and delays the time to peak concentration ( T max). This effect is documented but does not alter the total extent of absorption.

Mechanism of Action

Attentho (atomoxetine) functions as a selective norepinephrine reuptake inhibitor (NRI), acting primarily on the central nervous system. Its main biological target is the presynaptic norepinephrine transporter (NET). The drug interacts with the NET as an inhibitor, selectively blocking the reuptake of norepinephrine (NE) into the presynaptic neuron.

This molecular blockade of NET elevates the extracellular concentration of NE within the synaptic cleft. This increase in synaptic NE, particularly in the prefrontal cortex (PFC), results in enhanced stimulation of postsynaptic adrenergic receptors. Concurrently, the NET inhibition in the PFC also modulates dopamine (DA) signaling by increasing the synaptic concentration of DA in this specific brain region. The downstream cascade of increased catecholamine levels (NE and DA) in the PFC leads to system-level physiological modulation involving noradrenergic and dopaminergic neurotransmission in cortical circuits.

Dosage and Administration Information

How Attentho is Used: Official Administration Guidelines

Attentho (Atomoxetine) is administered exclusively by the oral route as a capsule. The capsule must be swallowed whole and is not to be crushed, opened, or chewed. This medication may be taken with or without food.

Standard Regimen and Frequency

The medicine is typically prescribed for administration once daily, usually in the morning. However, the total daily amount may also be taken in evenly divided doses in the morning and late afternoon/early evening.

Population Initial Daily Dose Maximum Daily Dose
Adults (>70 kg) 40 mg 100 mg
Pediatric (≤70 kg) 0.5 mg/kg 1.4 mg/kg (or 100 mg)

The regimen involves a planned titration schedule. The initial dose must be maintained for a minimum of three days before any increase to the target dose, which is 80 mg/day for adults. Further increases up to the maximum dose may occur after an additional two to four weeks. If a dose is missed, it should be taken as soon as possible, provided the total prescribed daily amount is not exceeded in a 24-hour period. The medication may be discontinued without requiring a tapering schedule.

Population-Specific Adjustments

Specific dose reductions are utilized for patients with impaired organ function. For moderate hepatic impairment, the initial and target doses are reduced to 50% of the usual regimen. For severe hepatic impairment, the initial and target doses are reduced to 25%. No dose adjustment is generally necessary for patients with renal impairment, including those with end-stage renal disease.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Attentho (Atomoxetine)

Evidence for Use in Attention-Deficit/Hyperactivity Disorder (ADHD)

The research base for Attentho consists primarily of numerous short-term, randomized controlled trials (RCTs) used to explore the condition of ADHD. These studies compared the medicine against an inactive substance (placebo) to examine how symptoms change over defined time intervals. These trials explored evidence describing how core symptoms of Inattention and Hyperactivity/Impulsivity were measured in observed populations.

Across these acute-phase studies, research examined symptoms during periods when they became more noticeable. Studies reported patterns of change on standardized rating scales used by clinicians and parents, which were measured during the study period. Studies reported how symptom intensity evolved in the observed populations.


Types of Studies and Measured Outcomes

The initial research primarily used controlled, double-blind RCTs, with most pivotal studies lasting approximately six to ten weeks. These trials focused on outcomes related to functional measures, such as symptom patterns related to attention and impulse control. Systematic reviews and meta-analyses combine data from multiple RCTs to explore consistency across the broader evidence landscape.

The primary outcomes the research examined were clinician- and parent-rated assessments of overall symptom severity and global clinical status. Research also explored changes in outcomes reflecting daily functioning or activity level, such as symptom patterns related to focusing and impulsiveness.


Long-Term Research, Specific Populations, and Uncertainty

Research has explored symptom patterns beyond the initial short-term trials through open-label extension studies and maintenance research. While the acute-phase RCTs typically lasted only a few months, follow-up durations were extended in some studies to monitor symptom patterns for up to six months or, in some cases, longer. However, the longer-term effects are not fully established under the same controlled conditions used in the initial trials.

Attentho was studied in a range of age groups, including children, adolescents, and adults. Research also examined patients with conditions that co-occur with ADHD, such as anxiety disorders. Key limitations in the research include that the initial pivotal evidence is short-term. Additionally, data for certain groups remain insufficient, and comparative evidence against all other available therapies is lacking. Research is ongoing to fill these existing gaps.

Frequently Asked Questions (FAQ)

Common questions about Attentho (FAQ)

Q: How long does it typically take for Attentho to start working?

Studies used to examine the effects of Attentho typically followed patients over short-term periods, often lasting between six to ten weeks. Measurements were taken throughout these clinical trials to track how symptom patterns changed over those defined time intervals.

Q: How long does one dose of Attentho last in the body?

Attentho is manufactured as a long-acting capsule, which is designed for administration once per day. According to official pharmacokinetic data, the active substance is generally cleared from the body within one to two days for individuals who are extensive metabolizers. The clearance time can be significantly longer in people who are considered 'poor metabolizers' of the CYP2D6 liver enzyme.

Q: Is it necessary to take Attentho with food?

Official prescribing information states that Attentho may be taken either with or without food. While it is not necessary to take it with a meal, it is noted that consuming the capsule with a high-fat meal can slow down the rate at which the body absorbs the drug. This interaction does not, however, change the total amount of medicine absorbed.

Q: Does Attentho need special handling or storage conditions?

Yes, regulatory documents describe specific handling and storage guidelines. The capsules must be swallowed whole and should not be opened, crushed, or chewed. For storage, the medicine must be kept at a controlled room temperature, protected from moisture, and stored securely out of the sight and reach of children.

Q: What populations are excluded from using Attentho according to the drug label?

The drug label lists absolute restrictions for use. Attentho is strictly prohibited for patients with a history of hypersensitivity to the drug, narrow-angle glaucoma, pheochromocytoma, or severe heart and blood vessel disorders. It is also strictly contraindicated for use with, or within 14 days of stopping, a Monoamine Oxidase Inhibitor (MAOI).

Q: How does Attentho feel when you first start taking it?

Official documents describe the common effects reported by patients when first starting the medicine. These frequently reported symptoms can include common side effects such as headache, nausea, vomiting, dizziness, somnolence (drowsiness), and changes in appetite.

Q: Why do people compare Attentho to other medicines like [Similar Drug Name]?

Attentho is officially classified as a non-stimulant selective norepinephrine reuptake inhibitor. This classification is the key distinction, as it makes the medicine an alternative to traditional stimulant drugs often prescribed for the same therapeutic purpose. This difference in mechanism of action is why the drug is frequently discussed in patient and clinical information.

Q: Is Attentho considered an addiction risk?

Official regulatory bodies classify Attentho as a non-stimulant medication. Unlike many traditional stimulant therapies, it is not scheduled under the Controlled Substances Act, a designation that is associated with low abuse liability.

Q: Are there common side effects of Attentho that usually go away?

Official documents report adverse effects based on the frequency they were observed in clinical trials, listing many common events such as headache, nausea, and decreased appetite. However, the official labeling describes the frequency of these events but does not provide specific details on the timeline for when they may resolve or if they are generally transient.

Q: If I stop taking Attentho, do the effects wear off right away?

Regulatory information states that the drug may be discontinued without requiring a gradual dose reduction, known as tapering. The active substance is generally cleared from the body within one to two days for extensive metabolizers. Since tapering is not typically required, the official information does not suggest a sudden immediate cessation of functional support.

Q: Does Attentho show up on common drug screening tests?

Scientific literature has reported that Atomoxetine or its byproducts may cause a false-positive result for amphetamines when using certain types of common drug screening tests (immunoassays). This is due to a structural similarity between the substances.

Q: What is the typical dosage window for Attentho (not asking for my dose)?

Official labeling defines a standard dose range that may be used by adults. This range typically begins at 40 mg per day and may be gradually increased by a physician up to a maximum daily dose of 100 mg.

Q: Is Attentho considered safe to use during pregnancy (as described in official sources)?

Official labeling states that use during pregnancy and lactation is advised only when the potential benefit is considered to justify the potential risk. Regulatory agencies note that while human data is inconclusive, animal studies have shown some potential risks to the developing fetus.

Q: Are there any food restrictions mentioned in the official guidance for Attentho?

The only specific food interaction noted in official documents is that a high-fat meal can slow the rate of drug absorption. No broader food restrictions (like the avoidance of specific foods or beverages) are cited in the official prescribing guidance.

Q: Does the efficacy of Attentho change over time?

While short-term clinical trials established the initial evidence for the drug, official labeling notes that the long-term effects of Attentho are not fully established under the same controlled conditions. The official product information indicates that long-term efficacy continues to be an area of research interest.

Q: Is Attentho approved in countries outside of the US?

Yes, the medicine is approved and available for use in many international regions outside of the United States. Approval is based on reviews by those respective governmental drug agencies, including authorities in countries across Europe and Australia.

Q: Why is Attentho only available by prescription?

The drug is classified as a prescription-only medication by regulatory bodies because its use requires professional clinical supervision and monitoring. This oversight is necessary due to the need for specific cardiovascular monitoring and the potential for serious adverse reactions, including a boxed warning for suicidal ideation.

Q: Are there any official reports of unexpected side effects with Attentho?

Official labeling is updated to include information derived from reports of adverse events that occur after the drug has entered the market. These post-marketing reports contributed to the inclusion of serious warnings regarding suicidal ideation, severe liver injury, and the potential for new psychotic or manic symptoms in some users.

How should Attentho be stored and disposed of?

How to Store and Dispose of Attentho

Attentho (atomoxetine capsules) must be stored strictly according to regulatory guidelines to ensure stability. The medication should be kept at Controlled Room Temperature, specifically between 20°C and 25°C (68°F and 77°F), with excursions permitted up to 30 C (86 F). It is essential to keep the capsules from freezing and to protect them from excessive heat and moisture.

Store the medication in its original container, ensuring the cap is tightly closed. As a safety precaution, Attentho must be placed out of the sight and reach of children. For disposal of unused or expired medicine, regulatory guidance advises consulting a healthcare professional or pharmacist. Do not flush the capsules down the toilet unless explicitly instructed.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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