What is Aldara?
Aldara (imiquimod 5% cream) is a prescription topical medicine used to treat external genital and perianal warts caused by certain strains of the human papillomavirus (HPV). It is approved by the European Medicines Agency (EMA) and classified as an immune response modifier rather than a direct antiviral agent.
Unlike treatments that physically destroy wart tissue, Aldara works by engaging the body’s own immune system to target HPV-infected cells. This mechanism distinguishes it from other wart treatments such as podophyllotoxin (Condyline, Warticon) and cryotherapy.
How does Aldara work?
Imiquimod, the active ingredient in Aldara, acts as a toll-like receptor 7 (TLR7) agonist. When applied to wart tissue, it binds to immune cells in the skin and triggers a cascade of immune responses:
- Interferon production: Imiquimod stimulates the release of interferon-alpha and other cytokines, which activate the immune system’s antiviral response at the site of application.
- Cytokine cascade: The immune activation leads to local production of tumour necrosis factor-alpha (TNF-alpha) and interleukins, which promote immune cell infiltration into wart tissue.
- Cell-mediated immunity: T-lymphocytes are recruited to the treatment area, where they target and eliminate HPV-infected keratinocytes.
- Indirect antiviral effect: Because imiquimod acts on immune cells rather than directly on the virus, it does not kill HPV; instead, it helps the immune system clear infected tissue.
This immune-mediated mechanism explains why local skin reactions (redness, erosion, flaking) are both expected and indicative that the medicine is working.
Who is Aldara for?
Aldara is indicated for adults with external genital and perianal warts. It is not suitable for:
- Internal warts: Aldara is for external use only and should not be applied inside the vagina, urethra, or rectum.
- Children and adolescents: The safety and efficacy of imiquimod in patients under 18 years have not been established for this indication.
- Pregnant women: There is limited safety data for imiquimod in pregnancy. A doctor must carefully assess the risk-benefit balance.
- Patients with compromised immune systems: Imiquimod’s mechanism depends on an intact immune response; effectiveness may be reduced in significantly immunocompromised individuals.
Se requiere una evaluación médica completa por parte de un médico independiente cualificado antes de emitir cualquier receta.
Posología y aplicación
Aldara 5% cream is applied three times per week (for example, Monday, Wednesday, Friday) before normal sleeping hours, typically for a period of 6 to 16 weeks.
Instrucciones de aplicación (as per EMA-approved guidance):
- Wash the treatment area with mild soap and water and allow to dry.
- Apply a thin layer of Aldara cream to the warts and rub in gently until absorbed.
- Leave the cream on for 6 to 10 hours, then wash off with soap and water.
- Do not cover the treated area with an occlusive dressing.
- Avoid sexual contact while the cream is on the skin.
| Aspecto | Detalle |
|---|---|
| Frecuencia de aplicación | 3 times per week (non-consecutive days) |
| Duración máxima | 16 weeks |
| Crema por aplicación | Up to 250 mg (one sachet or a small pump dose) |
| Tiempo de lavado | 6–10 hours after application |
Treatment should be discontinued if severe local skin reactions occur, and resumed when the reaction has subsided. A doctor should be consulted if warts worsen or do not improve.
Efectos secundarios
Aldara is associated with predictable local skin reactions, which reflect the immune activation at the treatment site.
Efectos secundarios muy frecuentes (pueden afectar a más de 1 de cada 10 personas)
- Redness (erythema) at the application site
- Flaking or peeling of the skin
- Itching
- Burning or stinging sensation
Efectos secundarios frecuentes (afectan a entre 1 y 10 de cada 100 personas)
- Erosion or ulceration at the application site
- Swelling or oedema
- Induration (hardening of skin)
- Scabbing
Efectos poco frecuentes pero notables
- Flu-like symptoms (fatigue, headache, myalgia)
- Pigmentation changes at the treatment site (which may be persistent)
- Remote site skin reactions
Severe local reactions may require a treatment break. Patients should contact their doctor if they experience any reaction that concerns them.
Aldara vs alternative wart treatments
Several treatment options are available for external genital warts in Europe. The choice between them depends on wart characteristics, patient preference, and clinical assessment by an independent doctor.
| Tratamiento | Principio activo | Mecanismo | Aplicación |
|---|---|---|---|
| Aldara | Imiquimod | Immune stimulation | 3x/week cream, up to 16 weeks |
| Condyline | Podophyllotoxin | Antimitotic (cell death) | Twice daily, 3 days on/4 days off |
| Warticon | Podophyllotoxin | Antimitotic (cell death) | Twice daily, 3 days on/4 days off |
| Cryotherapy | Liquid nitrogen | Physical destruction | Clinic-based procedure |
Aldara is generally preferred for larger or multiple wart areas where patient-applied treatment over several weeks is appropriate. Podophyllotoxin preparations may offer faster clearance of smaller lesions. All treatment decisions must be made by a qualified doctor.
How to access Aldara online in Europe
Aldara es un medicamento sujeto a prescripción médica en todos los estados miembros de la UE. No puede dispensarse legalmente sin una receta válida de un profesional médico autorizado.
Prescrivia opera como intermediario tecnológico: no prescribimos medicamentos, no empleamos médicos ni vendemos medicamentos. Nuestra plataforma conecta a los pacientes con médicos independientes registrados en la UE que pueden realizar evaluaciones de salud en línea confidenciales.
El proceso:
- Complete una evaluación de salud: Responda preguntas estructuradas sobre su historial de salud, síntomas actuales y medicamentos. Your responses are reviewed by an independent doctor.
- Revisión médica: Un médico independiente registrado en la UE revisa su evaluación. If imiquimod is clinically appropriate, they may issue a prescription.
- Dispensación en farmacia: Si se emite una receta, se envía a una farmacia asociada autorizada de la UE, que dispensa y envía el medicamento directamente a usted.
Importante: Prescrivia no garantiza que se emita una receta. Todas las decisiones de prescripción son tomadas de forma independiente por profesionales médicos cualificados.
Información importante de seguridad
No utilice Aldara si usted:
- Are allergic to imiquimod or any other ingredient in the cream
- Have open wounds or broken skin at the intended application site
- Have not been assessed by a doctor for the nature of your skin lesions
Informe a su médico antes de using Aldara si usted:
- Are pregnant, planning to become pregnant, or breastfeeding
- Have a compromised immune system (including HIV infection or are taking immunosuppressant medicines)
- Have any inflammatory skin conditions in the treatment area
- Have previously used any other treatment for genital warts
Interacciones medicamentosas: Imiquimod is applied topically and systemic drug interactions are not well documented; however, avoid use with other topical products on the same area simultaneously unless directed by a doctor.
Aldara does not treat the underlying HPV infection and does not prevent transmission to sexual partners. Barrier contraception (condoms) reduces but does not eliminate the risk of HPV transmission.
Fuentes
La información médica de esta página se basa en las siguientes fuentes:
- European Medicines Agency (EMA). Aldara (imiquimod) — Summary of Product Characteristics. Disponible en: ema.europa.eu
- World Health Organization (WHO). Human papillomavirus (HPV) and cervical cancer — Fact sheet. who.int
- Beutner KR, et al. Imiquimod, a patient-applied immune-response modifier for treatment of external genital warts. Antimicrobial Agents and Chemotherapy. 1998;42(4):789–794.
Este contenido se revisa periódicamente para reflejar las directrices clínicas actualizadas. Se proporciona únicamente con fines informativos y no constituye asesoramiento médico. Consulte siempre a un profesional sanitario cualificado para obtener asesoramiento relevante para sus circunstancias de salud individuales.
Frequently asked questions
- What is Aldara used for?
- Aldara (imiquimod 5% cream) is approved by the EMA for the topical treatment of external genital and perianal warts (condylomata acuminata) in adults. It is also used for certain types of superficial skin conditions including actinic keratoses and superficial basal cell carcinoma under medical supervision.
- How does Aldara work on genital warts?
- Imiquimod is an immune response modifier. It does not act directly on the human papillomavirus (HPV) but instead stimulates the local immune system to produce interferons and other cytokines, which help the body recognise and eliminate HPV-infected cells. This immune-mediated response is what clears the visible warts.
- How long does Aldara treatment take?
- Aldara is typically applied three times per week (not on consecutive days) for up to 16 weeks. Clinical trials show that visible wart clearance occurs in approximately 50-60% of patients within this period. A doctor will advise on the appropriate treatment duration based on your response.
- Can I get Aldara online in Europe?
- Puede acceder a Aldara a través de plataformas intermediarias en línea que le conectan con médicos independientes registrados en la UE. Tras completar una evaluación de salud confidencial, un médico evaluará si imiquimod es clínicamente apropiado para su situación.
- What are the main side effects of Aldara?
- Local skin reactions are the most common side effects: redness, flaking, swelling, erosion, and itching at the application site. These reactions indicate the immune response is active and are generally expected. Systemic side effects are uncommon but may include fatigue, headache, and flu-like symptoms. Severe reactions should be reported to a doctor.
Tratamientos
Prescrivia es únicamente una plataforma intermediaria. No prestamos servicios médicos, no prescribimos tratamientos ni dispensamos medicamentos. Todas las decisiones médicas son tomadas por médicos independientes registrados en la UE. Todos los medicamentos son dispensados por farmacias autorizadas de la UE. Esta plataforma facilita la conexión entre pacientes y profesionales sanitarios.