O que é Aldara?
Aldara (imiquimod 5% creme) is a receita médica topical medicamento used to treat external genital and perianal warts caused by certain strains of the human papillomavirus (HPV). It is approved by the Agência Europeia de Medicamentos (EMA) and classified as an immune response modifier rather than a direct antiviral agent.
Unlike tratamentos 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 tratamentos such as podophyllotoxin (Condyline, Warticon) and cryotherapy.
Como funciona 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 tratamento 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 medicamento is working.
Para quem é 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 pacientes under 18 years have not been established for this indication.
- Pregnant women: There is limited safety data for imiquimod in pregnancy. A médico 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.
A full medical assessment by a qualified independent médico is required before any receita médica is issued.
Dosagem and application
Aldara 5% creme is applied three times per week (for example, Monday, Wednesday, Friday) before normal sleeping hours, typically for a period of 6 to 16 weeks.
Application instructions (as per EMA-approved guidance):
- Wash the tratamento area with mild soap and water and allow to dry.
- Apply a thin layer of Aldara creme to the warts and rub in gently until absorbed.
- Leave the creme 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 creme is on the skin.
| Aspect | Detail |
|---|---|
| Application frequency | 3 times per week (non-consecutive days) |
| Maximum duration | 16 weeks |
| Cream per application | Up to 250 mg (one sachet or a small pump dose) |
| Wash-off time | 6–10 hours after application |
Treatment should be discontinued if severe local skin reactions occur, and resumed when the reaction has subsided. A médico should be consulted if warts worsen or do not improve.
Efeitos secundários
Aldara is associated with predictable local skin reactions, which reflect the immune activation at the tratamento site.
Very common efeito secundários (affecting more than 1 in 10 people)
- Redness (erythema) at the application site
- Flaking or peeling of the skin
- Itching
- Burning or stinging sensation
Efeitos secundários comuns (afetando 1 a 10 em 100 pessoas)
- Erosion or ulceration at the application site
- Swelling or oedema
- Induration (hardening of skin)
- Scabbing
Menos comuns but notable effects
- Flu-like symptoms (fatigue, headache, myalgia)
- Pigmentation changes at the tratamento site (which may be persistent)
- Remote site skin reactions
Severe local reactions may require a tratamento break. Patients should contact their médico if they experience any reaction that concerns them.
Aldara vs alternativas wart tratamentos
Several tratamento options are available for external genital warts in Europe. The choice between them depends on wart characteristics, paciente preference, and clinical assessment by an independent médico.
| Treatment | Active Ingredient | Mechanism | Application |
|---|---|---|---|
| Aldara | Imiquimod | Immune stimulation | 3x/week creme, 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 paciente-applied tratamento over several weeks is appropriate. Podophyllotoxin preparations may offer faster clearance of smaller lesions. All tratamento decisions must be made by a qualified médico.
Como aceder a Aldara online na Europa
Aldara is a medicamento sujeito a receita médica (POM) in all estados-membros da UE. It cannot legally be dispensed without a valid receita médica from a licensed medical professional.
Prescrivia operates as a technology intermediary: we do not prescribe medicamentos, employ médicos, or sell medicamentos. Our platform connects pacientes with independent EU-registered médicos who can conduct confidential online health assessments.
The process:
- Complete uma avaliação de saúde: Answer structured questions about your health history, current symptoms, and medications. Your responses are reviewed by an independent médico.
- Avaliação médica: An independent EU-registered médico reviews your assessment. If imiquimod is clinically appropriate, they may issue a receita médica.
- Dispensa na farmácia: If a receita médica is issued, it is sent to a licensed EU farmácia partner, which dispenses and ships the medicamento directly to you.
Important: A Prescrivia não garante that a receita médica will be issued. All prescribing decisions are made independently by qualified medical professionals.
Informação de segurança importante
Não utilize Aldara if you:
- Are allergic to imiquimod or any other ingredient in the creme
- Have open wounds or broken skin at the intended application site
- Have not been assessed by a médico for the nature of your skin lesions
Informe o seu médico before using Aldara if you:
- Are pregnant, planning to become pregnant, or breastfeeding
- Have a compromised immune system (including HIV infection or are taking immunosuppressant medicamentos)
- Have any inflammatory skin conditions in the tratamento area
- Have previously used any other tratamento for genital warts
Interações 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 médico.
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.
Fontes
Medical information on this page is based on the following sources:
- Agência Europeia de Medicamentos (EMA). Aldara (imiquimod) — Summary of Product Characteristics. Available at: ema.europa.eu
- Organização Mundial da Saúde (WHO). Human papillomavirus (HPV) and cervical cancer — Fact sheet. who.int
- Beutner KR, et al. Imiquimod, a paciente-applied immune-response modifier for tratamento of external genital warts. Antimicrobial Agents and Chemotherapy. 1998;42(4):789–794.
This content is reviewed periodically to reflect updated clinical guidance. It is provided for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional for advice relevant to your individual health circumstances.
Frequently asked questions
- O que é Aldara utilizado para?
- Aldara (imiquimod 5% creme) is approved by the EMA for the topical tratamento of external genital and perianal warts (condylomata acuminata) in adults. It is also utilizado para certain types of superficial skin conditions including actinic keratoses and superficial basal cell carcinoma under medical supervision.
- Como funciona 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.
- Quanto tempo dura Aldara tratamento 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 pacientes within this period. A médico will advise on the appropriate tratamento duration based on your response.
- Posso obter Aldara online na Europa?
- You can access Aldara through online intermediary platforms that connect you with independent EU-registered médicos. After completing a confidential health assessment, a médico will review whether imiquimod is clinically appropriate for your situation.
- What are the main efeito secundários of Aldara?
- Local skin reactions are the most common efeito secundários: redness, flaking, swelling, erosion, and itching at the application site. These reactions indicate the immune response is active and are generally expected. Systemic efeito secundários are uncommon but may include fatigue, headache, and flu-like symptoms. Severe reactions should be reported to a médico.
Tratamentos
A Prescrivia é apenas uma plataforma intermediária. Não prestamos serviços médicos, não prescrevemos tratamentos nem dispensamos medicamentos. Todas as decisões médicas são tomadas por médicos independentes registados na UE. Todos os medicamentos são dispensados por farmácias licenciadas na UE. Esta plataforma facilita a ligação entre pacientes e prestadores de cuidados de saúde.