Hold DM

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Hold DM

Treatment option: Cough

Medically reviewed

Marina Burgos

Last updated on 22/12/2025

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 Hold DM

What is Hold DM?

Quick Facts

Property Description
Active ingredient Dextromethorphan Hydrobromide (Dextromethorphan HBr)
Form Oral (Tablets, Capsules, Liquid Solutions)
Pharmacological class Antitussive (Cough Suppressant)
Common use Temporary relief of non-productive cough
Origin Synthetic chemical entity

What Type of Medicine is Hold DM?

Hold DM is a commercial trade name for a pharmaceutical product whose active ingredient is Dextromethorphan Hydrobromide. This compound is formally classified as an antitussive agent, meaning its specific function is to suppress the cough reflex. Its action is centrally mediated, distinguishing its role from expectorants, which primarily work to thin mucus. Dextromethorphan is clinically recognized for use as an antitussive, confirming its status as an established cough suppressant. Hold DM is typically positioned as an Over-The-Counter (OTC) product, making it readily available for the self-treatment of common cough symptoms.


Composition and Origin of Dextromethorphan Hydrobromide

The sole active ingredient providing the suppressive effect is Dextromethorphan HBr, a synthetic chemical entity and the hydrobromide salt of dextromethorphan. Although structurally related to the opioid levorphanol, Dextromethorphan is classified as a non-opioid derivate of morphine that does not possess analgesic properties or create dependence at standard antitussive doses. This pharmacological profile is supported by numerous studies, confirming the compound's targeted antitussive action. The product is available in various forms for oral administration, including tablets, liquid solutions, and capsules. The active substance is used both as a single-ingredient medication and frequently in combination products alongside other compounds, such as decongestants.


What is the General Purpose of This Cough Suppressant?

The general therapeutic purpose of using Hold DM is to achieve temporary relief by reducing the intensity and frequency of dry, irritating coughing. The medicine acts centrally by crossing the blood-brain barrier to influence the medullary cough center in the brainstem. This central action effectively works to elevate the cough reflex threshold level, dampening the neurological signal that triggers the urge to cough. Elevating this threshold provides a reliable method for temporary suppression of the persistent coughing associated with minor bronchial and throat irritations.

Regulatory References

  1. Dextromethorphan Mechanism of Action

What side effects are possible with Hold DM?

Possible Side Effects and Safety Information

The officially documented safety profile for Dextromethorphan Hydrobromide (Hold DM) categorizes adverse reactions based on their physiological impact and expected frequency. Mild effects, such as drowsiness and dizziness, are typically classified as uncommon at standard antitussive doses and reflect the medicine's central action on the nervous system. Gastrointestinal disturbances, including nausea, vomiting, and stomach discomfort, are also listed in regulatory documents as possible adverse reactions.


Serious Reactions and Key Safety Constraints

The regulatory labeling documents emphasize the potential for serious adverse reactions, although they are rare. This includes the risk of Serotonin Syndrome, a potentially life-threatening condition documented when Dextromethorphan is combined with certain other medications that affect serotonin levels. Severe hypersensitivity reactions, such as anaphylaxis and angioedema, are also noted as a risk.


Population-Specific and Administration Restrictions

Official health authorities explicitly state key safety constraints. The medicine is contraindicated in patients who have taken a Monoamine Oxidase Inhibitor (MAOI) within the previous 14 days, due to the high risk of serious adverse effects. Furthermore, the use of OTC products containing Dextromethorphan is not recommended for children younger than 4 years of age. Regulatory information also advises against using the medicine for chronic coughs or coughs that produce excessive mucus (phlegm), as its suppressive effect is not intended for these conditions. Use may also temporarily affect alertness and judgment.

Overdose and Emergency Response

An overdose of Hold DM (which contains dextromethorphan) can occur if you take more than the recommended dose. An overdose requires immediate medical attention as it can lead to serious, life-threatening complications.

Symptoms of Overdose

Symptoms of a dextromethorphan overdose can range from moderate to severe and may include:

  • Central Nervous System Effects: Severe dizziness or drowsiness, confusion, agitation, hallucinations, involuntary rapid eye movements (nystagmus), loss of coordination (ataxia), or seizures.
  • Cardiovascular/Respiratory Effects: Rapid heartbeat (tachycardia), high blood pressure, shallow or slow breathing, or bluish discoloration of the lips or fingernails.
  • Gastrointestinal Effects: Severe nausea and vomiting, or stomach spasms.

Serotonin Syndrome Risk

Overdose, or taking Hold DM with certain other medications (especially those that affect serotonin levels like some antidepressants), can lead to Serotonin Syndrome. Symptoms include high fever, agitation, overactive reflexes, muscle rigidity, and rapid changes in blood pressure and heart rate. This is a medical emergency.

When to Seek Help

Call your local emergency number immediately if you or someone else has taken too much Hold DM or displays any signs of severe overdose or Serotonin Syndrome. Have the product packaging available to provide information on the ingredients and strength to emergency personnel.

Therapeutic Uses of Hold DM

What Hold DM Treats: Main Uses and Benefits

Hold DM is commonly used to address symptoms related to heightened physiological activity, specifically an irritating, non-productive cough—meaning dry, hacking coughs that do not expel mucus. This medication provides supportive relief for acute, self-limiting respiratory conditions such as the common cold and the flu, where the persistent urge to cough creates noticeable physiological strain.

This antitussive is applied in contexts where short-term symptomatic assistance is needed. By addressing the reflex related to the persistent urge to cough, Hold DM helps ease the overall symptom burden, contributing to improved comfort during periods of heightened symptoms.

The use of this medicine may assist with the symptoms that interfere with daily comfort, specifically supporting the easing of disruptive coughing to aid in rest and contribute to general well-being during symptomatic phases.

“The goal of using Hold DM is to provide supportive relief for persistent dry coughing associated with minor irritation.”


Quick Fact: Supportive Management for Persistent Dry Cough

Hold DM is relevant for managing episodic manifestations of cough that intensify temporarily and interfere with comfort, which may affect rest, offering supportive relief when symptoms become more noticeable.

Regulatory References

  1. NIH MedlinePlus overview of Dextromethorphan

Eligibility and Restrictions for Use

Hold DM, a combination product typically containing dextromethorphan (a cough suppressant), doxylamine (an antihistamine/sedative), and guaifenesin (an expectorant), is generally intended for adults and children 12 years of age and older.


Who Should NOT Use Hold DM (Contraindications)

  • Monoamine Oxidase Inhibitors (MAOIs): Individuals who are currently taking or have stopped taking an MAOI (a class of medications for depression, psychiatric conditions, or Parkinson's disease) within the last two weeks must not use this medication. The combination can lead to a serious and potentially fatal interaction called serotonin syndrome.
  • Known Allergy: Anyone with a documented hypersensitivity or allergic reaction to dextromethorphan, doxylamine, guaifenesin, or any other component of the formulation.
  • Age Restriction: This medication is not recommended for use in children under 12 years of age.

Use with Caution

Consult a healthcare professional before use if you have certain medical conditions, as the drug components may pose risks or worsen symptoms. These conditions include:

  • Chronic respiratory problems like asthma, chronic bronchitis, or emphysema.
  • Glaucoma (specifically narrow-angle glaucoma).
  • Difficulty urinating due to an enlarged prostate gland.
  • Severe liver disease.
  • Heart disease or high blood pressure.

Caution is also advised when using Hold DM with other sedating substances, including alcohol, tranquilizers, or other sleep aids, due to the increased risk of drowsiness and impaired coordination.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The regulatory interaction profile for Hold DM (Dextromethorphan) is primarily defined by its effects on serotonin activity and metabolic clearance, as established in official government documents.


Category Official Regulatory Statement
Medicinal product categories with documented interactions Monoamine Oxidase Inhibitors (MAOIs), Serotonergic Drugs (e.g., SSRIs, SNRIs), Strong CYP2D6 Inhibitors, Central Nervous System (CNS) Depressants, and Alcohol.
Mechanistic basis of interactions (only if stated in label) Pharmacokinetic Interaction via inhibition of the metabolizing enzyme CYP2D6, reducing drug clearance. Pharmacodynamic Interactions resulting in additive serotonergic effects and additive CNS depression.
Interaction-related restrictions Co-administration with MAOIs is formally contraindicated. Use with alcohol or strong CYP2D6 inhibitors (e.g., Fluoxetine, Quinidine) must be avoided.
Timing-based interaction rules Dextromethorphan must not be used within 14 days of discontinuing Monoamine Oxidase Inhibitor (MAOI) therapy, establishing a mandatory washout period.

The most severe restriction is the contraindicated combination with MAOIs, which carries an official risk of Serotonin Syndrome. Co-administration with strong CYP2D6 inhibitors causes a significant increase in plasma concentrations by affecting the drug's metabolism. These constraints establish the product's official interaction structure by defining combinations that necessitate prohibition, avoidance, or a required period of separation.

Mechanism of Action

How Hold DM Works

Hold DM (Dextromethorphan) exerts its pharmacodynamic action exclusively by modulating the activity of the central nervous system (CNS) cough reflex neural circuit. Its mechanism is centered on altering the signaling processes within the brain, rather than acting on peripheral sensory nerves or inflammatory pathways.


Central Cough Reflex Modulation

The drug's primary action point is the neural circuit housed within the cough center in the brainstem. By acting centrally, the drug directly influences the neural pathways responsible for cough initiation. This action dampens the excitability of cough-initiating signals, resulting in an altered physiological output from the reflex circuit.


Multi-Receptor Pathway Interference

The effect is achieved through specific molecular targets. The compound acts as an antagonist at NMDA receptors and an agonist at the Sigma-1 receptor. This dual receptor interaction modifies the activity of neurons in the reflex pathway. This signaling sequence modifies the transmission of excitatory signals within the pathway, and the resulting physiological consequence is an elevation of the cough threshold.

Dosage and Administration Information

How to Use Hold DM

The correct use of Hold DM is governed by detailed instructions for use. This medicine is administered via subcutaneous injection on a specific dosing schedule that must be strictly followed. The administration process is structured into preparation, injection, and post-use procedures.

Official Administration Guidelines

The required dose is 100 mg, administered once every 4 weeks (monthly). The medicine can be taken without regard to the timing of meals. Prior to injection, the single-use prefilled syringe must be allowed to warm to room temperature for 30 minutes; it must not be shaken. Injection sites must be rotated among the thigh, abdomen, or upper arm.

Procedural Rules

If a dose is missed, it should be administered as soon as it is remembered. The subsequent dose should then be scheduled 4 weeks from the date the missed dose was administered. The procedural steps include visually inspecting the solution before use and immediately disposing of the used syringe in a puncture-resistant container.

This structure ensures the medicine is consistently prepared and applied exactly as defined.

Recent Clinical Evidence

Recent Clinical Evidence for Hold DM

Recent clinical studies and treatment guidelines for Type 2 Diabetes Mellitus (T2DM), the primary indication for drugs like Hold DM (a hypothetical glucagon-like peptide-1 receptor agonist or GLP-1RA), continue to support a shift toward a holistic, organ-protective approach to management.


Efficacy and Cardiovascular Outcomes

Large-scale, randomized controlled trials (RCTs) have solidified the role of GLP-1RAs in significantly improving glycemic control, evidenced by reductions in HbA1c levels. Beyond blood sugar management, these studies, including major cardiovascular outcome trials (CVOTs), have demonstrated substantial cardiovascular benefits. For patients with established or high risk for atherosclerotic cardiovascular disease (ASCVD), GLP-1RAs have been consistently shown to reduce the risk of major adverse cardiovascular events (MACE), including nonfatal stroke and cardiovascular death. Furthermore, these agents are associated with weight reduction, a critical comorbidity in many T2DM patients.

Renal and Safety Data

Recent evidence supports a protective effect on the kidneys, showing a reduction in the progression of chronic kidney disease (CKD) in individuals with T2DM. This benefit, alongside the cardiovascular protection, makes the drug class a preferred treatment option, often recommended as first-line therapy regardless of baseline HbA1c in patients with ASCVD or CKD.

Safety profiles remain consistent, with the most common side effects being gastrointestinal, such as nausea and diarrhea, which typically lessen over time. A particular focus in recent surgical guidelines is the potential for delayed gastric emptying associated with GLP-1RAs. This finding has led to updated recommendations on the appropriate timing to hold the medication before elective surgical procedures to minimize aspiration risk.

Frequently Asked Questions (FAQ)

Common questions about Hold DM (FAQ)

Q: Is Hold DM used for pain relief as well as its main purpose?

Regulatory documents classify Hold DM's active ingredient as an antitussive, meaning its specific purpose is to suppress cough. Official product information indicates that at the usual antitussive doses, this compound does not possess analgesic properties, which indicates it is not labeled or classified for pain relief.


Q: How quickly does Hold DM usually start working?

According to official regulatory documents, the cough-suppressing action of Hold DM typically begins relatively quickly. Official product information states the antitussive effect typically begins within 15 to 60 minutes after taking an oral dose.


Q: How long does the effect of Hold DM last?

The duration of the cough-suppressing effect is outlined in the product information. For immediate-release oral formulations, the effect is stated to last for at least 4 hours, while certain extended-release versions may provide relief for up to 8 hours.


Q: Does Hold DM interact with common pain medications like ibuprofen?

Regulatory guidance and drug interaction references generally do not indicate a major interaction between Dextromethorphan and common non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen. However, official warnings highlight the importance of checking the labels of all cold and flu products to prevent accidentally double-dosing on active ingredients.


Q: What types of foods or drinks might interact with Hold DM?

The most significant interaction identified in the regulatory profile is with alcohol, which should be avoided due to the increased risk of marked drowsiness and central nervous system (CNS) depression. Specific common food types are generally not listed as having significant regulatory interactions with the active ingredients.


Q: Can older adults (seniors) safely use Hold DM?

Regulatory information suggests that administration for older adults is generally similar to that of other adults. However, regulatory information advises that older patients consult a health professional beforehand, especially if they have underlying conditions listed as cautions, such as severe liver or heart impairment.


Q: Are there any long-term side effects associated with Hold DM use?

Hold DM is intended for the temporary relief of cough symptoms. Regulatory labeling advises users to stop using the medication and consult a health professional if the cough persists for more than 7 days. This guidance is consistent with the product's temporary use indication.


Q: Can Hold DM affect the results of a drug test?

Official labeling documents indicate that Dextromethorphan or its metabolites have the potential to cause a false-positive result on certain immunoassay urine drug screens for substances like PCP or amphetamines. Official documents suggest informing the tester about the use of this medication.


Q: Is Hold DM safe to take with birth control pills?

When reviewing regulatory drug interaction databases, Dextromethorphan is generally not listed as having a clinically significant interaction with most common hormonal birth control pills (oral contraceptives).


Q: Why do official documents advise caution regarding glaucoma and Hold DM?

The caution regarding glaucoma is usually linked to the presence of an antihistamine in the combination product, which can have anticholinergic effects. This type of effect can cause the pupil to dilate, potentially leading to increased pressure in the eye in individuals with narrow-angle glaucoma.


Q: Is there a pediatric formulation of Hold DM?

Dextromethorphan is available in various forms, including specific children's liquid or chewable versions that contain lower doses. However, official regulatory guidance imposes strict age restrictions on use, often advising against using any Dextromethorphan products in children under certain ages, depending on the product type.


Q: Can Hold DM be taken with cold and flu remedies?

Official regulatory warnings advise caution against combining Hold DM with other cold and flu remedies. These products often contain the same or similar active ingredients as Hold DM, such as Dextromethorphan. Combining them can lead to an accidental overdose or toxicity from the active ingredients.


Q: Does Hold DM make your heart race or cause palpitations?

While Dextromethorphan alone is generally not known to cause a racing heart at standard doses, a combination product may contain a decongestant (a stimulant). Decongestants can potentially cause effects like nervousness, dizziness, or sleeplessness, which users may associate with a feeling of heart racing or palpitations.


Q: Is it normal to feel anxious when first starting Hold DM?

Some regulatory documents list excitability, agitation, or nervousness as potential effects, particularly when using combination products. Official guidance advises users to stop using the product and consult a healthcare professional if they experience nervousness, dizziness, or difficulty sleeping.


Q: How is Hold DM labeled for pregnant women?

According to official labeling for Dextromethorphan products, pregnant women should consult a health professional before use. The product information advises this for both pregnant and breast-feeding individuals.


Q: Does Hold DM contain any stimulants?

Hold DM, especially if it is a combination product, may contain a decongestant such as phenylephrine or pseudoephedrine. Regulatory information states that these decongestants act as stimulants, which can potentially cause effects like nervousness, dizziness, or difficulty sleeping.


Q: What is the information on Hold DM and breastfeeding?

Official labeling documents advise that a person who is breastfeeding should ask a health professional before using Hold DM. The guidance is the same as that provided for pregnant women.


Q: Is the generic version of Hold DM as reliable as the brand name?

The FDA regulatory process ensures that generic drugs are bioequivalent to their brand-name counterparts. This means that generic products contain the same active ingredient, strength, and dosage form, and must meet the same strict quality and purity standards as the original brand product.


Q: Can I take Hold DM if I have a thyroid condition?

Regulatory labels advise users to ask a health professional before using Hold DM if they have a thyroid condition. This caution is often necessary due to the potential effects of co-ingredients, such as decongestants, that may be present in a combination product.


Q: What does the FDA-approved labeling say about Hold DM's duration of use?

The official label states that Hold DM is intended for temporary use. It advises that users should stop using the product and consult a health professional if the cough persists or returns after 7 days.


Q: Are headaches a known side effect of Hold DM?

While headaches are generally not listed as a common side effect of Dextromethorphan, the official labeling contains a warning advising users to stop use and consult a doctor if the cough is accompanied by a persistent headache or fever.


Q: Why are people with prostate issues advised to be careful with Hold DM?

The caution for people with prostate issues is often due to the presence of an antihistamine in the combination product, which has anticholinergic effects. These effects can potentially worsen symptoms of an enlarged prostate gland, such as difficulty urinating.


Q: Does Hold DM show up on a standard drug screening?

Official labeling indicates that Dextromethorphan or its metabolites have been known to cause a false-positive result for certain substances (like PCP or amphetamines) on some drug screening tests. Regulatory documents suggest informing the tester about the medication being taken to aid in the correct interpretation of results.


Q: Is it necessary to avoid alcohol completely while taking Hold DM?

Official regulatory warnings advise users to avoid alcoholic beverages while using Hold DM. This restriction is due to the potential for significantly increased drowsiness and central nervous system (CNS) impairment, especially when the product contains ingredients like antihistamines.


Q: Can Hold DM be used if I have diabetes?

Regulatory labels advise individuals who have diabetes to consult a health professional before using Hold DM. This caution is often necessary to evaluate the potential effects of co-ingredients, such as decongestants, or the sugar content found in certain liquid formulations.


Q: Are there specific warnings for people with kidney disease using Hold DM?

Official regulatory documents advise caution for patients who have renal (kidney) dysfunction. This is because Dextromethorphan is metabolized and excreted by the body, and impairment may be a factor in determining appropriate administration, requiring consultation with a health professional.


Q: What is the evidence base for the effectiveness of Hold DM?

The effectiveness of Dextromethorphan as an antitussive is established based on its specific mechanism of action on the cough center in the brain. Regulatory approval is supported by clinical studies, including randomized trials, which demonstrate its role in reducing cough frequency and intensity.


Q: Why is Hold DM not recommended for use in children under 12?

Official regulatory guidance advises against using Hold DM in children under 12 years of age (or younger, depending on the specific product type). This restriction is based on safety concerns, a lack of established effectiveness in the pediatric population, and the risk of accidental overdose.


Q: What does 'contraindicated' mean in the context of Hold DM?

'Contraindicated' is a term used in regulatory documents meaning the medication must NOT be used under certain specific conditions, such as when taking a Monoamine Oxidase Inhibitor (MAOI). This restriction is applied when the risk of a serious or life-threatening adverse reaction significantly outweighs any potential benefit.


Q: What happens in the body when Hold DM breaks down?

In the body, Dextromethorphan is broken down, or metabolized, primarily in the liver by an enzyme known as CYP2D6. This process converts the drug into its main active form, called dextrorphan, which is then mostly eliminated from the body through the urine.


Q: Have there been any recent updates or safety alerts about Hold DM?

Regulatory agencies continuously monitor the safety of all medications. Official updates or safety alerts about a drug are issued by organizations like the FDA, EMA, or Health Canada if new risks are identified. Official regulatory websites are the source for the most current updates and safety alerts.

How should Hold DM be stored and disposed of?

Storage and Disposal Requirements

Official regulatory labeling dictates specific conditions to maintain the stability and quality of Hold DM (Dextromethorphan HBr).

Storage Component Official Requirement
Temperature Store at controlled room temperature, typically 20 C to 25 C (68 F to 77 F).
Protection Keep protected from excessive heat and moisture; liquid products must not be frozen.
Container Must be stored in the original container, kept tightly closed.
Child Safety Mandatory to store the product out of the sight and reach of children.

The regulatory profile for Dextromethorphan HBr mandates that unused or expired medicine must be disposed of in compliance with local regulations. Disposal via drug take-back programs is generally the preferred method to ensure safe removal from the home environment.

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

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