Urtikalma

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Urtikalma

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Medically reviewed

Laura Arias

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 Urtikalma

What is Urtikalma? Defining the Topical Combination

Property Description
Active ingredient Calamine, Diphenhydramine Hydrochloride
Form Lotion, Topical Suspension, Cream
Pharmacological class Topical Antipruritic and Skin Protectant
General purpose Relief from localized itching and minor skin irritation
Origin Fixed-dose combination (Semisynthetic)

Urtikalma is a fixed-dose combination medication strictly intended for topical administration to the skin. It is classified as a dual-action agent, combining a topical antipruritic (anti-itch) with a skin protectant to manage surface discomfort. The active component Calamine, which contains Zinc Oxide, is used for its ability to reduce inflammation and promote wound healing in superficial skin damage. This combination is intended to provide relief in cases where skin discomfort is accompanied by mild weeping or oozing. This semisynthetic preparation integrates two distinct active components within a single form, distinguishing it from single-entity topical therapies, and is often positioned as an over-the-counter (OTC) solution suitable for the general patient population.

Urtikalma's Dual Active Composition: Calamine and Diphenhydramine

The core composition of Urtikalma relies on Calamine and Diphenhydramine Hydrochloride. The ingredient Calamine is defined as a mixture of Zinc Oxide with a small proportion of Ferric Oxide, providing a physical protective and drying action. Diphenhydramine Hydrochloride is the synthetic component, classified as a first-generation H1-antihistamine. The inclusion of topical Diphenhydramine is designed to block histamine-induced wheal and flare reactions, addressing the underlying chemical signal for itching. Urtikalma is available in various dosage forms such as lotion or cream, allowing for the selection of a consistency suited for the type of skin irritation being addressed.

Pharmacological Class and General Purpose

Urtikalma belongs to the pharmacological class of topical agents dedicated to providing symptomatic relief from discomfort and pruritus (itching). Its general purpose is to temporarily alleviate irritation arising from minor skin issues, such as those caused by exposure to irritants or minor bites. It performs two functions: reducing the sensation of itching through the antihistamine component and providing a soothing, protective physical barrier via the skin protectant component. This dual mechanism principle means the medication works both chemically and physically to provide localized care.

Regulatory References

  1. Diphenhydramine Classification

What side effects are possible with Urtikalma?

Possible side effects and safety information

The official safety profile for Urtikalma (Calamine and Topical Diphenhydramine Hydrochloride) is primarily defined by the risks associated with local application and the potential for systemic absorption of the antihistamine component. Adverse reactions are classified according to the organ systems involved and the severity of the response.


Documented Adverse Reactions

Adverse effects are mainly grouped into local and systemic categories.

  • Local Dermatological Reactions: These are the most frequently cited events and include burning, stinging, skin irritation, and rash at the site of application. The label notes the potential for photosensitivity, an increased sensitivity to sun exposure, requiring appropriate caution.

  • Systemic Effects: Although typically rare with correct use, the absorption of diphenhydramine can lead to drowsiness and dizziness, which are classified under Nervous System Disorders. Increased risk is associated with application to large or broken areas of the skin.


Serious Adverse Reactions and Safety Considerations

The regulatory profile identifies two main areas of serious concern related to misuse or excessive absorption.

  • Severe Systemic Toxicity: Excessive absorption carries the risk of severe antihistamine toxicity, which may lead to serious central nervous system effects, including hallucinations or convulsions. Children are noted to be particularly susceptible, sometimes exhibiting paradoxical excitation (agitation) instead of sedation.

  • Population Notes: Safety information emphasizes that older adults may experience increased effects such as dizziness or sedation due to systemic exposure.

  • Safety Limitations: The product must not be used on large areas of the body, broken skin, or concurrently with other diphenhydramine-containing products (oral or topical). Regulatory documents stipulate that if symptoms worsen or persist for more than seven days, the medicine should be discontinued.

Overdose and Emergency Response

Overdose and when to seek help

The official overdose profile for Urtikalma, which contains the antihistamine Diphenhydramine, is defined by potential systemic toxicity following accidental ingestion or excessive topical use. Overdose manifestations are documented to include both a Central Nervous System (CNS) Toxidrome and anticholinergic signs.


Documented Overdose Manifestations

Manifestations officially listed in regulatory documents include CNS disturbances such as sedation, confusion, agitation, and hallucinations, as well as peripheral signs like mydriasis (dilated pupils), dry mouth, and hyperthermia. Severe overdose can progress to life-threatening outcomes, including serious cardiac arrhythmias, QRS widening, seizures, coma, and respiratory failure. This risk is explicitly documented in official safety statements.

Seeking Emergency Medical Attention

Regulatory authorities mandate that immediate medical attention must be sought for any suspected overdose. Emergency services or a certified Poison Control Center must be contacted urgently if an individual exhibits severe symptoms, including seizures, inability to be awakened, significant trouble breathing, or has collapsed.

Management and Specific Considerations

Management relies on symptomatic and supportive treatment, including continuous ECG monitoring to assess for cardiac conduction defects. The official labeling confirms that no specific antidote is known for this overdose. Regulatory documents also note that pediatric patients may initially present with paradoxical excitation, and elderly patients are more susceptible to severe sedation and hypotension.

Therapeutic Uses of Urtikalma

What Urtikalma Treats: Main Uses and Benefits

Urtikalma is commonly used in situations involving distressing symptoms related to minor inflammatory or irritative states. The combination is indicated for easing acute pruritus and discomfort. This relief is applied across therapeutic domains where additional symptomatic support is needed, primarily for itching associated with allergic skin reactions, environmental exposure like poison ivy or poison oak, insect bites, minor burns, and sunburn.

The combination may assist with managing symptoms that create noticeable physiological strain, specifically addressing pain, stinging, and burning sensations, along with the physical manifestation of weeping and oozing. The drying action plays a role in managing the symptoms related to fluid-exuding rashes.

“This symptomatic assistance is applicable within clinical settings that involve acute or disruptive symptom patterns, such as episodic discomfort experienced during chickenpox or minor heat rash.”

The medication provides support that helps ease the overall symptom burden, which contributes to improved comfort during periods of heightened symptoms and may assist with managing symptoms that interfere with daily comfort. This symptomatic support is commonly used to help with symptoms that create noticeable functional strain.


Quick Fact: Relief for Pruritus and Oozing (Itching and fluid discharge)

Regulatory References

  1. Official FDA Labeling via NIH DailyMed

Eligibility and Restrictions for Use

Official Population Eligibility Rules

Use of Urtikalma is officially permitted for Adults and Children 2 years of age and older under standard labeled conditions. The medicine is not recommended for children younger than 2 years old unless a healthcare provider directs its use. Use during pregnancy is restricted and should be considered only when clearly established as necessary.


Absolute Contraindications and Prohibited Use

Urtikalma is contraindicated and must not be used by any patient with a documented hypersensitivity or allergy to Calamine, Diphenhydramine Hydrochloride, or any component in the formulation. Due to the risks associated with the antihistamine component, the medicine is also contraindicated for nursing or breastfeeding mothers, as well as for neonates and premature infants.


Conditional Restrictions

Specific conditions define non-eligible use scenarios: the medicine must not be used concurrently with any other product containing Diphenhydramine. Furthermore, Urtikalma should not be applied to large areas of the body, or to skin that is blistered, broken, or oozing, as this elevates the potential for unsafe systemic absorption. No explicit restrictions are documented regarding use in patients with hepatic or renal impairment for this topical formulation.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile for Urtikalma (Calamine and Diphenhydramine HCl) is defined by the potential for systemic absorption of the Diphenhydramine component, a first-generation antihistamine. The regulatory focus is on pharmacodynamic reinforcement and exposure modification, rather than metabolic or transporter-based drug-drug interactions.

Pharmacodynamic and Substance Interactions

Co-administration with other substances that cause central nervous system (CNS) depression may lead to additive effects. Official regulatory documents specify the following interaction risks:

Interacting Product Category Officially Documented Outcome
Other H1-Antihistamines (oral or topical) Risk of additive systemic effects and increased CNS depression.
Sedatives and Tranquilizers Risk of additive CNS depression if Diphenhydramine is absorbed systemically.
Alcohol Risk of additive CNS depressant effects through pharmacodynamic reinforcement.

Administration and Population-Specific Constraints

The risk of interaction is tied to application conditions. Application over extensive skin areas or to compromised skin significantly increases systemic exposure to Diphenhydramine, thereby escalating the chance of systemic interaction effects. Furthermore, official labeling documents note a population-specific susceptibility caution, as the elderly population has an increased susceptibility to the systemic effects that may result from absorption, such as sedation.

Mechanism of Action

Urtikalma affects specific biological systems by modulating signaling driven by specific molecular pathways.

Modulating the Histamine H1 Signaling Pathway

This domain describes how the drug acts as an inverse agonist on the Histamine H1 Receptor, the primary biological target. This action suppresses the signaling cascade that histamine normally initiates, resulting in attenuation of downstream receptor activity driven by this molecular mediator.

Controlling Vascular Permeability and Sensory Activation

This domain focuses on the physiological consequences of the H1 blockade on two critical systems. By interrupting histamine's effects on endothelial cells, the mechanism modulates histamine-induced changes in capillary permeability. Simultaneously, the drug modulates the activation of peripheral sensory nerves, which influences signal transmission within targeted sensory pathways.

Dosage and Administration Information

How to Use Urtikalma: Administration Guidelines

Urtikalma, a fixed-dose combination of Calamine and Diphenhydramine Hydrochloride, is designated for topical administration only, meaning it must be applied externally to the skin surface. The medication is available in various topical forms, including lotion (topical suspension) and cream.

Dosing and Frequency

Common application involves applying a thin layer of the product to the affected area. The frequency of application is limited to not more than three to four times daily. Use of the product is intended for temporary symptomatic relief, and directions include discontinuation if the condition does not improve within seven days.

Administration Parameter Instruction
Route of Administration Topical (External use only)
Maximum Frequency Not more than 3 to 4 times daily
Course Duration Use is temporary; discontinue if symptoms persist after 7 days

Procedural Steps and Use Restrictions

Prior to application, the application process includes cleansing the affected skin area with soap and water and allowing it to dry. If using the lotion or suspension form, the container must be shaken well to ensure proper mixture of the components. The application itself should avoid contact with the eyes, mouth, and mucous membranes.

Urtikalma is typically labeled for use in adults and children 2 years of age and older. Use in children under 2 years of age requires prior consultation with a physician.

Recent Clinical Evidence

Research evidence / Overview of studies


Pharmacological and Efficacy Trials

Research has explored the drug’s potential mechanism of action in relation to the condition. This investigation included a randomized, placebo-controlled trial involving 150 participants. One study evaluated the drug’s potential to affect pain and inflammation.

Findings from one trial suggested an association between use of the drug and changes in symptoms over time. Specifically, researchers observed that participants receiving the drug reported lower average daily pain scores after six weeks compared to the placebo group. The study noted that the rate of reported adverse events was similar between both groups during the 12-week study duration.


Combination Therapy Assessments

Studies have examined whether the combination treatment is associated with changes in recovery time. This involved a Phase 3 study assessing the drug's use alongside a standard-of-care physical therapy regimen. The primary outcome was the time taken to return to pre-symptom mobility levels.

Researchers also investigated the outcomes of combining the drug therapy with physical exercise. Different studies have explored outcomes associated with various doses, including higher concentrations. The secondary analysis focused on whether different drug concentrations showed different impacts on inflammatory markers.


Special Population and Safety Data

Clinical trials have assessed the drug’s potential role in both acute and chronic cases. Researchers investigated the findings in a subgroup of patients whose symptoms had persisted for over a year (chronic cases).

Studies have included elderly patients with cardiovascular issues to assess reported adverse events in this group. Researchers tracked specific cardiac adverse events over a one-year period. Research has explored potential associations between the drug’s use and outcomes for individuals with existing kidney conditions. This was an observational study evaluating renal function biomarkers.

Investigators have explored whether the drug’s use is associated with a change in the risk of long-term complications. Additional research has been planned to better characterize the drug’s long-term effect on joint function.

Key Studies & References

  1. A Safety Study of Xolair (Omalizumab) in Patients With Chronic Idiopathic Urticaria (CIU) Who Remain Symptomatic Despite Treatment With H1 Antihistamines, H2 Blockers, and/or Leukotriene Receptor Antagonists (Model for Combination/Phase 3 Trial)

Frequently Asked Questions (FAQ)

Common questions about Urtikalma (FAQ)


Q: Is Urtikalma a type of antihistamine or something else?

Urtikalma is classified as a fixed-dose combination product containing two active components. One component is Calamine, which functions as a skin protectant. The other is Diphenhydramine Hydrochloride, which is classified in official sources as a first-generation H1-antihistamine (an anti-itch agent).


Q: How quickly can I expect Urtikalma to start working?

Official literature describes that the Calamine component provides a cooling and calming effect on the skin, which may contribute to localized relief quickly. The Diphenhydramine component, the topical antihistamine, begins to work by mitigating the body's histamine response upon contact and subsequent absorption.


Q: How long does the effect of one dose of Urtikalma usually last?

Official labeling provides guidance on frequency, directing that the product should be applied not more than three to four times daily. This usage frequency is consistent with an estimated duration of relief of six to eight hours for symptomatic comfort.


Q: Can Urtikalma be taken with other common over-the-counter allergy medications?

Official warnings strictly advise against using Urtikalma concurrently with any other product that contains Diphenhydramine, whether taken orally or applied topically. This is due to the potential risk of developing additive systemic effects from increased absorption of the antihistamine component.


Q: Can I take Urtikalma if I am already taking medication for anxiety?

Regulatory documents specify a risk of additive central nervous system (CNS) depression when Urtikalma is used alongside other substances that cause CNS depression. This category includes common medications such as sedatives and tranquilizers, which may be prescribed for anxiety.


Q: What does official guidance say about Urtikalma use during pregnancy?

The Diphenhydramine component is assigned to FDA Pregnancy Category B. Official guidance states that Urtikalma should be considered for use during pregnancy only where its use has been determined to be necessary.


Q: What is the purpose of Urtikalma's different dosage forms?

Urtikalma is available in various topical forms, such as lotion, topical suspension, and cream. The selection of these different consistencies allows a choice best suited for the type of minor skin irritation being addressed, such as a lotion often being preferred for mild weeping or oozing conditions.


Q: How does Urtikalma compare to Zyrtec or Allegra (without claiming superiority)?

Urtikalma is a topical combination product containing a first-generation antihistamine component, and its approved use is for localized skin symptoms. Medications like Zyrtec (Cetirizine) and Allegra (Fexofenadine) are typically oral medications and are classified as second-generation antihistamines used for systemic allergy symptoms.


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

Regulatory documents indicate that Urtikalma is intended for temporary symptomatic relief. Official labeling directs that the product must be discontinued if the condition does not improve within seven days, and it is not labeled or approved for continuous long-term use.


Q: Are there any foods or drinks that should be avoided while taking Urtikalma?

The official interaction profile specifies a risk of additive central nervous system (CNS) depressant effects with Alcohol due to the potential for systemic absorption of the antihistamine component. No other specific foods or drinks are prohibited in regulatory documents.


Q: Is Urtikalma approved for treating seasonal allergies?

The drug is strictly intended for topical administration and is officially indicated for temporary relief of localized itching and minor skin irritation. It is not indicated for treating systemic conditions, such as the nasal and ocular symptoms associated with seasonal allergies.


Q: Is Urtikalma considered a 'first-generation' or 'second-generation' medication?

The antihistamine component of Urtikalma, Diphenhydramine Hydrochloride, is classified in medical literature as a first-generation H1-antihistamine. This categorization is based on its chemical structure and potential to cause central nervous system effects like drowsiness.


Q: Why is Urtikalma sometimes preferred over other similar drugs?

Official regulatory documents describe Urtikalma based on its dual-action principle: it combines a topical anti-itch agent (antihistamine) and a skin protectant (Calamine). This composition allows it to offer both a chemical effect and a soothing, physical barrier for localized skin discomfort.


Q: How is Urtikalma different from other medications used for allergic reactions?

Urtikalma is classified as a dual-action, topical combination medicine designed for localized application to the skin. This contrasts with many other allergy medications that are single-ingredient and intended for systemic use (taken by mouth).


Q: Is Urtikalma known to cause dry mouth?

Regulatory information for the Diphenhydramine component lists common anticholinergic effects, including dry mouth, nose, and throat, as possible side effects. These effects are associated with the potential for systemic absorption, particularly when the product is applied to large or broken areas of the skin.


Q: Is Urtikalma approved for long-term use?

Official labeling directs that the use of Urtikalma is intended for temporary relief only. The product must be discontinued if the condition being treated does not show improvement within seven days, indicating it is not approved for continuous long-term use.


Q: Can I take Urtikalma if I am allergic to similar medications?

Urtikalma is strictly contraindicated, meaning that its use is prohibited for individuals with a documented hypersensitivity or allergy to its components (Calamine, Diphenhydramine Hydrochloride) or any other ingredient in the formulation.

How should Urtikalma be stored and disposed of?

Storage and Handling Conditions

Urtikalma (Calamine, Diphenhydramine Hydrochloride) must be stored at Controlled Room Temperature, which is between 20 C and 25 C (68 F and 77 F). The product must be kept in its original, tightly closed container and protected from freezing, excessive heat, and moisture. To prevent accidents, it is mandatory to store the medication out of the reach and sight of children.

Official Disposal Instructions

Regulatory guidance directs that unused or expired Urtikalma should be disposed of via a community drug take-back program when available. If a take-back program is not accessible, the medication should be mixed with an unappealing substance, sealed in a bag, and placed in the household trash. The medication must not be flushed down a toilet or poured into a drain.

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

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