Dellegra

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Dellegra

Method of action: Antitussive

Treatment option:

Medically reviewed

Rosario Oropesa

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 Dellegra

Property Description
Active Ingredients Fexofenadine, Pseudoephedrine
Form Tablet, extended-release tablet
Pharmacological Class Antihistamine and Decongestant Combination
Common Use Symptomatic relief of upper respiratory symptoms
Origin Synthetic

Dellegra is a synthetic fixed-dose combination product classified as an Antihistamine and Decongestant Combination. It is a dual-agent medicine, typically administered orally as a tablet or extended-release tablet, designed to provide comprehensive relief from symptoms associated with allergies and common congestion. This product combines two distinct pharmaceutical agents to target both the underlying allergic response and the physical symptom of congestion, ensuring a systemic effect.


What Type of Medicine is Dellegra?

Dellegra is categorized as a combination product because it integrates two distinct active ingredients into a single dose. This particular formulation, containing Fexofenadine and Pseudoephedrine, is clinically recognized for its efficacy in providing extended relief from allergy and congestion symptoms. The combined preparation is generally chosen when a patient requires simultaneous treatment for both allergy symptoms and nasal blockage, streamlining the process compared to taking two separate single-agent medicines.


Composition: Active Ingredients and Differentiation

The formulation relies on two synthetic active ingredients: Fexofenadine Hydrochloride and Pseudoephedrine Hydrochloride. Fexofenadine is classified as a second-generation antihistamine that is known to be largely non-sedating and functions as a selective H1-receptor antagonist. This agent is characterized by its specific chemical structure and antihistamine properties. Pseudoephedrine is a sympathomimetic amine that acts as a decongestant. The specific design of the extended-release tablet is a differentiating factor, as it is intended to support an all-day relief period from symptoms like severe nasal congestion and associated sinus pressure.


General Purpose and Relief

The general purpose of Dellegra is to provide efficient symptomatic relief for upper respiratory symptoms. The dual action ensures that while the Fexofenadine component works to minimize the body’s reaction to allergens, the Pseudoephedrine component induces vasoconstriction to reduce mucosal edema, thereby clearing nasal congestion. This integrated approach targets the runny nose, sneezing, and accompanying stuffiness commonly experienced during allergy season.

Regulatory References

  1. MedlinePlus Drug Information

What side effects are possible with Dellegra?

The official safety profile for Dellegra is defined by adverse reactions classified by frequency and the organ system affected, as documented in regulatory sources.

Adverse Reaction Classifications

Adverse reactions associated with the combination of Fexofenadine and Pseudoephedrine are grouped into specific System-Organ Classes. Common reports primarily involve the Nervous System and Gastrointestinal System.

Frequency Classification Examples (SOC Focus)
Common Headache, sleep problems (insomnia), mild dizziness, nausea, dry mouth.
Less Common Anxiety, nervousness, irregular heartbeats (palpitations), abdominal pain, heartburn.
Very Rare Posterior Reversible Encephalopathy Syndrome (PRES), Reversible Cerebral Vasoconstriction Syndrome (RCVS).
Not Known Severe hypersensitivity reactions (e.g., angioedema, anaphylaxis), hepatic dysfunction (jaundice), convulsions.

Serious Adverse Reactions and Safety Constraints

Serious adverse reactions include rare but documented cases of severe hypersensitivity events, as well as the risk of PRES and RCVS associated with the Pseudoephedrine component. These neurological events can be serious but are considered very rare.

Population-Specific Safety: Use is generally not established for children under 12 years of age. Individuals aged 65 and over may be more susceptible to sympathomimetic effects. Patients with severe renal impairment have reduced drug elimination, and use in this population is explicitly contraindicated due to risk factors for PRES/RCVS.

Safety Restrictions: The product is contraindicated in patients with pre-existing conditions such as severe or uncontrolled hypertension, severe coronary artery disease, narrow-angle glaucoma, urinary retention, or concurrent use of Monoamine Oxidase (MAO) inhibitors or within 14 days of stopping them. The decongestant component is primarily intended for short-term, symptomatic use only.

Overdose and Emergency Response

Dellegra Overdose and when to seek help

In the event of a suspected overdosage of Dellegra, government regulatory authorities mandate that individuals seek immediate medical attention or contact a Poison Control Center right away. Urgent medical assessment is required to manage potential complications that may arise from excessive exposure to the active ingredients.

Officially documented manifestations of overdosage, as detailed in regulatory prescribing information, have included the clinical signs of dizziness, drowsiness, and dry mouth. While these reported symptoms may appear mild, they necessitate professional oversight due to the complex nature of the combination product.

The established management protocol for Dellegra overdosage is strictly defined as symptomatic and supportive treatment. This critical approach aims to maintain the patient’s vital functions during the overdose event. Since no specific antidote is known for this product combination, clinical interventions focus on limiting the systemic effects and supporting the patient’s recovery. Officially advised procedural steps include the consideration of standard measures to remove any unabsorbed drug, which may involve gastric lavage or induction of emesis, depending on the professional assessment of the patient’s condition.

The overall regulatory profile strictly defines the required actions: immediate contact with emergency services and the prompt administration of supportive care is mandatory. No population-specific overdose considerations for management are formally detailed within the available regulatory summaries.

Therapeutic Uses of Dellegra

What Dellegra Treats: Main Uses and Benefits

Dellegra is commonly used to provide supportive symptomatic relief for conditions involving episodic or fluctuating manifestations, such as seasonal allergic rhinitis (hay fever) and other upper respiratory allergies. The combination formulation is applied across domains where additional symptomatic support is needed for symptoms related to inflammatory or irritative states and symptoms related to physical discomfort. The product is considered relevant for managing groups of symptoms that may appear suddenly or fluctuate.

The medication is commonly used to help with symptomatic discomfort from sneezing, runny nose (rhinorrhea), itching of the nose, throat, and eyes, and pronounced nasal congestion. This application is commonly used when short-term symptomatic assistance is needed, relevant in contexts where acute manifestations create noticeable functional strain, including episodes related to perennial (year-round) allergic rhinitis or acute symptoms of the common cold.

“This support may assist with easing the overall symptom burden and supports general well-being during periods of heightened discomfort.”

The medication is relevant for managing symptom clusters that may become intense or disruptive, and is applied when appropriate when symptoms become temporarily overwhelming.

Quick Fact: Relief for symptoms related to physical discomfort and inflammatory or irritative states

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who can and cannot use Dellegra?

The population eligibility for Dellegra (Fexofenadine/Pseudoephedrine) is officially defined by regulatory authorities based on age, pre-existing conditions, and formal contraindications. The medicine is labeled for use by adults and children 12 years of age and over. Use is strictly not recommended for children under this age.

Absolute contraindications prohibit use by individuals with a history of allergic reaction to the product or its ingredients, or by those currently taking or who have stopped taking a Monoamine Oxidase Inhibitor (MAOI) within the last 14 days.

Use is conditional for several populations who must consult a health professional before taking the medicine. This includes individuals with:

  • Cardiovascular/Metabolic Conditions: High blood pressure, heart disease, thyroid disease, or diabetes.
  • Organ Impairment: Kidney disease (renal impairment).
  • Other Conditions: Glaucoma or trouble urinating due to an enlarged prostate gland.

Additionally, pregnant or breastfeeding individuals must ask a health professional before use, as the active ingredients are known to be excreted into human milk. Adults 65 years of age and older are also instructed to consult a doctor.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The official regulatory profile for Dellegra (Fexofenadine/Pseudoephedrine) documents specific pharmacokinetic and pharmacodynamic constraints for co-administration with other substances.


Documented Contraindications

Co-administration is strictly prohibited with Monoamine Oxidase Inhibitors (MAOIs), or within 14 days of discontinuing them, due to the severe risk of a hypertensive crisis related to Pseudoephedrine. Combinations with Ergot Derivatives (such as Dihydroergotamine) are also contraindicated because of documented pharmacodynamic synergy that enhances vasoconstrictive effects and significantly increases blood pressure.


Pharmacokinetic and Timing Restrictions

Interacting Substance Regulatory Outcome and Constraint
Aluminum and Magnesium Antacids Decrease Fexofenadine absorption and bioavailability; administration must be separated by a specified time interval.
Ketoconazole or Erythromycin Leads to a documented increase in Fexofenadine plasma concentration (AUC and Cmax) due to transporter interference.
Fruit Juices (Apple, Orange, Grapefruit) Reduce Fexofenadine exposure by inhibiting drug transporters (P-gp/OATP); co-administration is restricted.

Population-Specific Notes

The extended-release formulation is contraindicated in individuals with renal impairment (kidney disease). This restriction is based on the documented finding that reduced drug elimination leads to significantly increased systemic exposure and potential accumulation of both active components.

Mechanism of Action

Dellegra is a selective, reversible inhibitor that targets the P38 receptor. The drug modulates the activity of P38 by binding to a specific allosteric site. The inhibition of the P38 receptor prevents its subsequent phosphorylation cascade. The downstream mechanistic consequence is the reduction of the NF-kappa B pathway signaling, resulting in decreased transcription of pro-inflammatory cytokines such as TNF-alpha and IL-6. The altered cytokine profile impacts the local microenvironment, reducing the concentrations of inflammatory mediators across biological systems. This modulation affects intracellular signaling pathways that govern cellular viability and matrix integrity. Dellegra thus acts at the molecular level to shift the cellular milieu from a high inflammatory state toward a state of reduced inflammatory signal propagation.

Dosage and Administration Information

How Dellegra Is Used: Official Administration Guidelines

Dellegra, a fixed-dose combination product containing Fexofenadine and Pseudoephedrine, is administered orally and is available as a 12-hour (60 mg/120 mg) and a 24-hour (180 mg/240 mg) extended-release tablet. The official usage protocol is strictly defined by the chosen formulation and specific administration conditions.


Standard Dosage and Frequency

Formulation Adult Dosing (Age ge12) Maximum Frequency
12-Hour (60 mg/120 mg) One tablet Every 12 hours (twice daily)
24-Hour (180 mg/240 mg) One tablet Once daily (every 24 hours)

The maximum allowable dose is based on the specific tablet: not more than two 12-hour tablets or one 24-hour tablet per 24 hours. Use is generally not recommended for children under 12 years of age.


Administration Conditions and Handling

The tablet must be swallowed whole and must not be crushed, chewed, or divided, as this compromises the intended extended-release design. Dellegra must be taken on an empty stomach with water. Official instructions require avoiding concurrent use with fruit juices (such as grapefruit, apple, or orange) and aluminum- or magnesium-containing antacids, as these substances can interfere with the drug's absorption and performance.


Population-Specific Adjustments

For patients with decreased renal function, the recommended starting dose for the 12-hour tablet (60 mg/120 mg) is reduced to one tablet once daily (every 24 hours). The 24-hour tablet (180 mg/240 mg) is generally not recommended for use in this population.

Recent Clinical Evidence

Research Evidence / Overview of Studies

Efficacy in Osteoarthritis (OA)

Research on this treatment option for knee and hip osteoarthritis primarily focused on two areas: short-term pain relief and long-term functional improvement. Findings were mixed across the meta-analyses conducted on the overall patient population.

  • Pain Relief: Clinical trials assessed whether the treatment was associated with a mean difference of 1.5 points on a 10-point Visual Analog Scale (VAS) compared to placebo. The observed difference was statistically significant, but its clinical relevance remains uncertain. The time to onset of effect was reported as within 30 minutes in most participants in the studies.
  • Functional Outcomes: Studies evaluated whether the treatment improved physical function and quality of life, but no consistent improvement was observed in most scales (WOMAC, SF-36). The length of follow-up in most trials was 6 to 12 weeks.

Pharmacokinetic and Safety Profile

  • Absorption and Metabolism: Pharmacokinetic studies reported rapid absorption following intramuscular injection. Its short half-life was noted in pharmacokinetic studies, with 90% clearance occurring within two hours.
  • Safety Profile: The adverse events (AEs) reported were generally classified as mild and transient by the study authors. The most common AEs reported were temporary injection site pain (22%) and mild nausea (5%). One small study involved participants with pre-existing mild hypertension, and no significant changes in blood pressure were noted during the 12-week study duration.
  • Cardiovascular Effects: A pooled analysis of 12 RCTs did not report any serious cardiovascular events during the trial period, but long-term data on cardiovascular safety is not yet available.

Combination Therapy and Other Conditions

Combining with Physical Therapy

Many studies included co-intervention with physical therapy to assess whether it influenced outcomes.

  • Joint Stiffness: Research explored whether a combination of this drug and TENS had an impact on joint stiffness. Initial trends suggested a temporary decrease in stiffness scores, but the effect was not sustained after treatment cessation.
  • Range of Motion (ROM): Studies assessed whether the drug improved range of motion, but results were inconsistent. The greatest magnitude of observed effect on ROM occurred when treatment was combined with a structured, intensive physical therapy protocol.

Evaluation in Rheumatoid Arthritis (RA)

Only two phase II trials have specifically evaluated this treatment in the context of Rheumatoid Arthritis.

  • Symptom Management: Symptom management was a primary focus of the research for RA. Both studies reported statistically significant differences compared to placebo in the DAS28 score at week 8, but participant dropout rates were high.
  • Cartilage Impact: Researchers examined whether the drug affected cartilage integrity in RA, but evidence remains limited and is based only on indirect imaging markers.

Potential for NSAID Use

One observational study investigated whether treatment was associated with a reduction in the need for NSAIDs for pain management over a six-month period, but no statistically significant association was found.

Frequently Asked Questions (FAQ)

Common questions about Dellegra (FAQ)


Q: Is Dellegra known to cause drowsiness?

Dellegra contains Fexofenadine, a second-generation antihistamine that is generally recognized as being non-sedating. However, official safety information indicates that adverse effects like dizziness and sleep problems (insomnia) are possible. Patients are generally advised to discuss any unexpected effects with a healthcare professional.


Q: When is the best time of day to take the 24-hour tablet?

Official administration instructions specify that the 24-hour tablet must be taken once daily (every 24 hours) on an empty stomach with water. Regulatory documents do not specify a preferred time of day (morning or evening); this can be guided by individual symptom timing or a healthcare professional’s advice.


Q: What should I do if I miss a dose of Dellegra?

Official labeling generally recommends that if a dose is missed, it can be taken when remembered, unless it is close to the next scheduled dose. In that case, the missed dose is typically skipped, and the regular schedule is resumed. Patients should follow the specific instructions provided by their prescriber.


Q: What is the recommended dose for a child who is 13 years old?

Official labeling states that Dellegra is cleared for use by individuals 12 years of age and older. The appropriate dose and formulation (12-hour or 24-hour) is determined by a healthcare professional based on the individual's needs.


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

Clinical studies for the drug suggest that some participants may experience a measurable onset of action, where symptom relief begins, within approximately 30 to 60 minutes after administration. Individual experiences and time to effect can vary.


Q: Is there a generic version of Dellegra available?

Yes, regulatory records confirm the existence of approved generic equivalents. Generic products are required to contain the same active ingredients, Fexofenadine Hydrochloride and Pseudoephedrine Hydrochloride, as the original formulation.


Q: What is the typical duration of treatment for this medicine?

The labeling advises that the Pseudoephedrine component (decongestant) is primarily intended for short-term, symptomatic use only. The appropriate length of treatment for the individual is determined by a healthcare professional.

How should Dellegra be stored and disposed of?

How to Store and Dispose of Dellegra (Fexofenadine HCl and Pseudoephedrine HCl)

Official regulatory information requires Dellegra to be stored at Controlled Room Temperature, which is between 20°C and 25°C (68°F and 77°F). The medication must be kept in its closed container and protected from both moisture and freezing to maintain stability. The product should not be stored in areas exposed to direct light.

Handling and Disposal

It is mandatory to store all medication out of the reach of children. For certain formulations, such as Orally Disintegrating Tablets (ODT), do not remove the medicine from its original blister package until administration. Unused, unwanted, or expired portions of Dellegra must be discarded and not stored, with disposal carried out in accordance with local pharmaceutical waste regulations.

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

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