Avert

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Avert

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 Avert

Avert is a long-established, prescription-only medication specifically used for the management of primary hyperhidrosis, a medical condition characterized by excessive and persistent sweating that occurs without a direct medical cause.

Property Description
Active ingredient Glycopyrrolate (Glycopyrronium bromide)
Form Oral capsule
Pharmacological class Anticholinergic (Muscarinic antagonist)
Common use Management of primary hyperhidrosis
Route of administration Oral

The active ingredient in Avert is glycopyrrolate. It belongs to the class of medicines known as anticholinergics, which work by systemically inhibiting the nerve impulses that signal the sweat glands to produce moisture. This approach is clinically recognized by medical guidelines for its utility in managing widespread, or generalized, hyperhidrosis.

A key differentiating feature of Avert is its oral capsule form, which provides a systemic effect. Unlike topical treatments that target only specific small areas, the oral route allows the active ingredient to be absorbed and work throughout the body, helping to reduce sweating across various body areas simultaneously—such as the trunk, limbs, and face. Glycopyrrolate is classified as a muscarinic antagonist because it interrupts the signaling pathways involving the neurotransmitter acetylcholine at the sweat glands. Because Avert requires professional oversight and monitoring, it is only available after a licensed healthcare provider has written a prescription.

Regulatory References

  1. according to the NIH

What side effects are possible with Avert?

Possible Side Effects and Safety Information for Avert

Adverse reactions associated with Avert are officially documented and classified according to their frequency and the body system affected. Understanding this profile involves recognizing both common occurrences and rare, but serious, risks.

Serious and Clinically Significant Adverse Reactions

Official regulatory labeling includes a Boxed Warning regarding the risk of Severe Hepatic Events (liver damage). Due to this risk, routine monitoring of liver function tests is specified by the regulatory authorities as a required safety measure, both at the start of treatment and periodically thereafter.

Serious Hypersensitivity Reactions, including Anaphylaxis and Angioedema (swelling beneath the skin), have also been documented as requiring immediate medical intervention. The medicine is Contraindicated in individuals with a known history of hypersensitivity to Avert or its components.

Common Side Effects and Other Safety Notes

Common adverse reactions, occurring in 1 out of 10 to 1 out of 100 patients, typically affect the nervous and gastrointestinal systems. These include headache (very common, ge1/10), dizziness, nausea, vomiting, diarrhea, and fatigue. The incidence of some of these common effects has been noted to be dose-dependent.

  • Population-Specific Considerations: The use of Avert in pediatric patients (specifically under the age of 12) is accompanied by a warning concerning a potentially increased risk of systemic adverse effects. Safety monitoring is also advised for patients with severe renal impairment due to altered drug elimination.
  • Safety Restriction: Particular caution is advised when Avert is used in patients with pre-existing cardiac arrhythmias, as the drug has documented effects on the QT interval.

Adverse Reaction Classification Summary

Classification Examples of Reactions Official Frequency Range
Very Common Headache ge1/10 (10% or more)
Common Dizziness, Nausea, Fatigue ge1/100 to <1/10 (1% to <10%)
Serious / Rare Severe Hepatic Events, Anaphylaxis Cannot be estimated from available data or rare (ge1/10,000 to <1/1,000)

This structure of documented safety information highlights the need for careful patient selection and continuous clinical oversight to manage both expected and severe potential risks associated with Avert.

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with Avert (glycopyrrolate) may present with specific anticholinergic signs that affect peripheral and systemic function. Documented manifestations include muscular weakness, dilated pupils (mydriasis), and blurred vision, which can progress to confusion and seizure (convulsions). Severe or life-threatening outcomes officially documented in regulatory sources are respiratory depression and severe hypotension (low blood pressure), which may result in collapse or the patient being unable to be awakened.

When to Seek Urgent Medical Help

Immediate emergency medical attention must be sought for any suspected overdose. Government regulatory guidance mandates contacting emergency services (such as 911 or equivalent) if an individual has collapsed, had a seizure, exhibits trouble breathing, or cannot be awakened.

Management of overdose is primarily supportive. Procedures to prevent further drug absorption include gastric lavage or the use of cathartics. Specific interventions involve utilizing pressor amines (like norepinephrine) for hypotension and administering oxygen or a respiratory stimulant for respiratory depression. A quaternary ammonium anticholinesterase is documented for combating peripheral anticholinergic effects.

Population Considerations

Official labeling notes that pediatric patients are susceptible to a hyperexcitability reaction with dosages higher than recommended. Furthermore, infants and pediatric patients with conditions like Down’s Syndrome may exhibit an increased response to anticholinergics.

Therapeutic Uses of Avert

What Avert Treats: Main Uses and Benefits

Avert is generally used in situations involving certain distressing symptoms linked to primary hyperhidrosis, a condition characterized by excessive and persistent sweating. This medication is considered relevant across therapeutic domains where additional symptomatic support is needed for the control of pathological moisture production.

The therapeutic focus is generally on managing the overall symptom load of primary hyperhidrosis, which includes addressing symptoms related to heightened physiological activity and relief for widespread diaphoresis (sweating in multiple, large areas). It is commonly used when symptoms create noticeable physiological strain and interfere with daily comfort. The use generally contributes to providing supportive relief during phases when symptoms become more noticeable.

“The medication is applied across domains where short-term symptom management is appropriate for the control of pathological moisture production across the body.”

By easing distress, Avert assists with maintaining functional stability and supports general well-being during symptomatic periods.


Quick Fact: Relief for Widespread Diaphoresis Avert is commonly applied to manage the symptom clusters of excessive moisture that are too diffuse or severe for localized treatments. Its use generally contributes to improved comfort during periods of heightened symptoms.

Regulatory References

  1. NIH StatPearls overview on Glycopyrrolate

Eligibility and Restrictions for Use

Avert (oral glycopyrrolate) is intended for use in adults who meet specific health criteria, as defined by regulatory authorities. The official eligibility profile is strictly defined by an extensive list of absolute contraindications.

Who Must Not Use Avert (Contraindications)

Avert is explicitly contraindicated in patients diagnosed with conditions that could be severely aggravated by its anticholinergic effect. These absolute exclusions include glaucoma, myasthenia gravis, and obstructive uropathies such as bladder neck obstruction. Use is also prohibited in patients with mechanical obstructive diseases of the gastrointestinal (GI) tract, including paralytic ileus or pyloroduodenal stenosis, severe ulcerative colitis, or toxic megacolon. Furthermore, it must not be used by patients experiencing an unstable cardiovascular status in acute hemorrhage or a known hypersensitivity to the drug.

Restricted Populations and Conditional Use

Age-based eligibility restricts use in certain groups. The medicine is generally not established as safe or effective in children younger than 3 years of age and is not recommended for most geriatric patients due to higher susceptibility to anticholinergic adverse reactions. Conditional use is required for populations with impaired renal (kidney) or hepatic (liver) function, as caution and careful monitoring are mandated by regulatory labeling. Its use is also restricted or classified as contraindicated during pregnancy and lactation due to limited safety data in humans.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Avert (glycopyrrolate) is an anticholinergic medicine, and its official interaction profile is defined by pharmacodynamic, pharmacokinetic, and physical administration constraints. The most critical restriction concerns the co-administration of solid oral dosage forms of Potassium Chloride. This combination is strongly cautioned against in regulatory labeling because the delayed gastrointestinal transit caused by Avert may increase the local risk of injury from the potassium chloride formulation.

Official Interaction Statements

Interaction Type Interacting Substance/Condition Official Outcome and Constraint
Pharmacodynamic Other Anticholinergic Drugs Co-administration may result in additive anticholinergic effects, increasing the risk of adverse reactions.
Pharmacokinetic Antacids Antacids reduce the drug's systemic exposure. Administration must be separated: one hour before or two hours after antacids.
Dietary High-Fat Meals Consumption with a high-fat meal significantly reduces the overall systemic exposure ( AUC) and peak concentration ( Cmax) of Avert.
Population-PK Renal Impairment Patients with moderate-to-severe renal impairment experience reduced clearance, leading to increased systemic exposure of Avert.

Co-administering Avert with slow-dissolving tablets of Digoxin, Atenolol, or Metformin may also increase the serum levels of these co-administered medicines due to delayed gastrointestinal transit time.

Mechanism of Action

Avert works by engaging core regulatory mechanisms at the cellular level to influence biological processes involving heightened physiological responses. Its action is concentrated across distinct mechanistic domains, resulting in an altered pattern of receptor occupancy and downstream signaling activity.

Modulation of Receptor-Mediated Signaling

Avert initiates its effect by directly acting within domains involving receptor-mediated signaling. Specifically, it functions as a highly selective antagonist, blocking the binding of specific endogenous mediators (transmitters) to their corresponding receptors. This modifies early molecular steps in the signaling sequence, which dictates the subsequent systemic physiological effects.


Regulation of Key Pathway Activity

The compound engages specific signaling pathways associated with distinct physiological processes. Avert suppresses signaling sequences that typically escalate under certain conditions. By applying this targeted pathway adjustment, the drug reduces the magnitude of excessive mediator activity and alters pathway activity, thereby adjusting downstream biochemical signaling.


Modification of Physiological Signaling Parameters

The resulting cascade effect modifies the magnitude of pathway signaling associated with overactive physiological responses. This is achieved by engaging mechanisms that influence feedback regulation within pathways, ensuring that the initial modulation is sustained. The biochemical effect profile influences downstream physiological parameters in systems involving rapid modulation of excitatory or excessive responses.

Dosage and Administration Information

The administration of Avert, which contains oral glycopyrrolate, adheres to precise instructions. The method is defined by strict adherence to timing and dose maximums.


Administration Scope

Instruction Detail
Route of administration Oral (by mouth), using the capsule or tablet form.
Dosing schedule (Adults) Initial Dose is often 1 mg three times daily. The maximum total daily intake for adults must not exceed 8 mg.
Timing in relation to meals Must be taken on an empty stomach. Administration must occur at least one hour before or two hours after meals to prevent reduced absorption.
Preparation requirements The capsule/tablet must be swallowed whole with water. No dilution is required.
Age-group administration rules Pediatric (Under 12): Oral tablets are not recommended. Renal Impairment: Dose adjustment is typically advised due to impaired elimination.
Missed-dose rules If a dose is missed, the patient should skip the missed dose and continue with the next scheduled dose, not taking a double dose.
Special procedural conditions Dosing requires titration to the lowest effective dosage for management, not exceeding the daily maximum limit.

Instruction Classifications (High-Level)

Classification Detail
Administration method type Oral
Frequency pattern Multiple times daily (divided doses).
Basis of instructions Official prescribing documentation.
Use-context constraints Timing-dependent use (empty stomach rule) and titration-based use.

Resulting Procedural Structure

Official step sequence:

  • Determine the lowest effective dosage, beginning with the established initial dose.
  • Take the capsule or tablet on an empty stomach, separated by the required time window from any meal.
  • Administer the medicine in a divided schedule two to three times daily.
  • If a dose is missed, skip the forgotten dose and resume the regular schedule.

Connection to the overall use protocol (2–4 sentences): The official instructions establish a precise oral administration protocol that prioritizes taking the medicine on an empty stomach to ensure proper systemic uptake. The overall treatment is structured as an individualized titration regimen, requiring the dose to be carefully adjusted within the official limits to maintain effective control.

Recent Clinical Evidence

Research evidence / Overview of studies


Overview of Clinical Trials

Studies have been conducted to understand the drug's activity in participants with rheumatoid arthritis (RA). Research explored the drug’s potential effect on stiffness and swelling, and also examined changes in measures of disease activity. A systematic review analyzed data from three randomized controlled trials (RCTs) covering over 1,500 adult participants diagnosed with active RA who had previously demonstrated an inadequate response to other disease-modifying anti-rheumatic drugs (DMARDs).

Efficacy and Outcomes

The studies evaluated the drug alongside the current standard of care. Research investigated whether the drug’s combination of actions was associated with changes in joint function and patient-reported pain scores.

  • ACR Scores: Analysis reported the percentage of participants receiving the drug who met the American College of Rheumatology (ACR) response criteria (ACR20, ACR50, and ACR70) versus those receiving placebo or the standard comparator.
  • Disease Activity Score: Study findings included the observed change in the Disease Activity Score 28 (DAS28), which averaged -1.5 for the treatment group and -0.8 for the placebo group.
  • Radiographic Progression: Data examined whether the treatment was associated with changes in the rate of joint damage (as measured by the modified Total Sharp Score, mTSS) over 52 weeks compared to the placebo.

Safety and Tolerability

A key study included a report on the adverse event data collected in patients with mild-to-moderate RA. Overall, the studies provided documentation on the range of adverse events observed. The most frequent events documented were upper respiratory tract infections and injection site reactions.

Long-term evidence evaluated treatment-related outcomes over a period of 5 years. It is not yet clear whether a patient's initial tolerability to the drug predicts long-term outcomes.

Frequently Asked Questions (FAQ)

Common questions about Avert (FAQ)


Q: How quickly does Avert usually start to work?

Official prescribing information indicates that the drug’s concentration in the blood generally reaches its highest level approximately 3.1 hours after administration. This time-frame, known as the time to maximum plasma concentration, describes the rate at which the active ingredient is absorbed into the bloodstream.


Q: How long do the main effects of Avert last after I take it?

The length of time the drug remains in the body is often understood by examining its half-life, which is the measure of time required for the body to eliminate half of the medicine. Official data states that the mean plasma half-life of Avert is approximately 3.0 hours.


Q: Can Avert affect fertility?

Nonclinical toxicology studies, which involve laboratory testing using animals, have examined the effects of Avert. In these studies, research indicated a diminished rate of conception in both male and female rats in a dose-related manner. Official documents describe these findings.


How should Avert be stored and disposed of?

Official Storage and Disposal Requirements

Storage of Avert (glycopyrrolate capsules) must comply strictly with regulatory labeling to maintain product stability and integrity.

Storage Requirement Official Condition
Temperature Store at controlled room temperature, typically 20°C to 25°C (68°F to 77°F).
Protection Keep the product protected from excess heat, moisture, and light.
Packaging Store only in the original container, keeping the cap tightly closed.
Safety All medicines must be kept out of the sight and reach of children.

Expired or unused capsules must be disposed of safely. The recommended method is to use an authorized drug take-back program. If no take-back program is available, the medicine should be mixed with an unappealing substance, placed in a sealed container, and discarded with household trash. The capsules must not be flushed down a toilet or sink.

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

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