Respuestas rápidas
- ¿Para qué se usa Tenofovir alafenamida?
- La etiqueta aprobada por la FDA (Vemlidy, Gilead Sciences, Inc., 14 de julio de 2025) dice, en inglés: “VEMLIDY is indicated for the treatment of chronic hepatitis B virus (HBV) infection in adults and pediatric patients 6 years of age and older and weighing at least 25 kg with compensated liver disease […]. …” Esta página no es un consejo médico. Hable con su médico o farmacéutico antes de empezar, dejar o cambiar cualquier medicamento.
- ¿Cuáles son los efectos secundarios de Tenofovir alafenamida?
- La sección «Adverse Reactions» (reacciones adversas) de la etiqueta de la FDA (Vemlidy, Gilead Sciences, Inc., 14 de julio de 2025) comienza así, en inglés: «The following adverse reactions are discussed in other sections of the labeling: Severe Acute Exacerbation of Hepatitis B [see Warnings and Precautions (5.1)] New Onset or Worsening of Renal Impairment [see Warnings and Precautions (5.3)] Lactic Acidosis/Severe Hepatomegaly with Steatosis [see Warnings and Precautions (5.4)] Most common adverse reaction (incidence greater than or equal to 10%, all grades) is headache.» … Esta página no es un consejo médico. Hable con su médico o farmacéutico antes de empezar, dejar o cambiar cualquier medicamento.
- ¿Qué interacciones tiene Tenofovir alafenamida?
- La sección «Drug Interactions» (interacciones) de la etiqueta de la FDA (Vemlidy, Gilead Sciences, Inc., 14 de julio de 2025) comienza así, en inglés: «VEMLIDY is a substrate of P-glycoprotein (P-gp) and BCRP. Drugs that strongly affect P-gp and BCRP activity may lead to changes in VEMLIDY absorption. Consult the full prescribing information prior to and during treatment for potential drug-drug interactions. (7) 7.1 Potential for Other Drugs to Affect VEMLIDY VEMLIDY is a substrate of P-glycoprotein (P-gp) and BCRP.» … Esta página no es un consejo médico. Hable con su médico o farmacéutico antes de empezar, dejar o cambiar cualquier medicamento.
- ¿Tenofovir alafenamida tiene una advertencia en recuadro?
- Sí. La etiqueta de la FDA de Vemlidy tiene una advertencia en recuadro («WARNING: POSTTREATMENT SEVERE ACUTE EXACERBATION OF HEPATITIS B»), la advertencia más seria de la FDA. Léala en la etiqueta completa y pregunte a su farmacéutico.
- ¿Hay escasez de Tenofovir alafenamida?
- La FDA no indica una escasez actual para los productos de este medicamento (datos de la FDA del 30 de octubre de 2026).
- ¿Se ha retirado del mercado Tenofovir alafenamida?
- No aparece ningún retiro vinculado a los productos de este medicamento en los informes de la FDA que usamos.
- ¿Quién fabrica Tenofovir alafenamida?
- 1 empresa tiene productos con receta de Tenofovir alafenamida en el directorio NDC de la FDA, entre ellas Gilead Sciences, Inc.
Para qué se usa Tenofovir alafenamida
Cita de la sección «Indications and Usage» (indicaciones y uso) de la etiqueta aprobada por la FDA. Se muestra en inglés, tal como la publica la FDA.
VEMLIDY is indicated for the treatment of chronic hepatitis B virus (HBV) infection in adults and pediatric patients 6 years of age and older and weighing at least 25 kg with compensated liver disease […]. …
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Leer la etiqueta completa en DailyMed →
Etiqueta citada: la de la presentación más común (tablet, oral), Vemlidy, Gilead Sciences, Inc.; abarca 1 producto del directorio NDC de la FDA. Las citas sobre efectos secundarios, interacciones, dosis y embarazo de abajo vienen de esta misma etiqueta.
Esta página no es un consejo médico. Hable con su médico o farmacéutico antes de empezar, dejar o cambiar cualquier medicamento.
Advertencia en recuadro
La advertencia en recuadro («caja negra») es la advertencia más seria de la FDA en la etiqueta de un medicamento, para riesgos graves o mortales.
Esta etiqueta tiene una advertencia en recuadro. Su título: WARNING: POSTTREATMENT SEVERE ACUTE EXACERBATION OF HEPATITIS B
. Leerla en la etiqueta completa →
Tenofovir alafenamida: lo que dice la advertencia en recuadro
Cita de la advertencia en recuadro (Boxed Warning) de la etiqueta aprobada por la FDA. Se muestra en inglés.
WARNING: POSTTREATMENT SEVERE ACUTE EXACERBATION OF HEPATITIS B Discontinuation of anti-hepatitis B therapy, including VEMLIDY, may result in severe acute exacerbations of hepatitis B. Hepatic function should be monitored closely with both clinical and laboratory follow-up for at least several months in patients who discontinue anti-hepatitis B therapy, including VEMLIDY.
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If appropriate, resumption of anti-hepatitis B therapy may be warranted [see Warnings and Precautions (5.1)]. WARNING: POSTTREATMENT SEVERE ACUTE EXACERBATION OF HEPATITIS B See full prescribing information for complete boxed warning. Discontinuation of anti-hepatitis B therapy may result in severe acute exacerbations of hepatitis B. Hepatic function should be monitored closely in patients who discontinue VEMLIDY. If appropriate, resumption of anti-hepatitis B therapy may be warranted. (5.1)
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Leer la etiqueta completa en DailyMed →
Efectos secundarios de Tenofovir alafenamida
Cita de la sección «Adverse Reactions» (reacciones adversas) de la etiqueta aprobada por la FDA. Se muestra en inglés. Avise a su médico de cualquier efecto secundario que le preocupe.
The following adverse reactions are discussed in other sections of the labeling: Severe Acute Exacerbation of Hepatitis B [see Warnings and Precautions (5.1)] New Onset or Worsening of Renal Impairment [see Warnings and Precautions (5.3)] Lactic Acidosis/Severe Hepatomegaly with Steatosis [see Warnings and Precautions (5.4)] Most common adverse reaction (incidence greater than or equal to 10%, all grades) is headache.
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(6.1) To report SUSPECTED ADVERSE REACTIONS, contact Gilead Sciences, Inc. at 1-800-GILEAD-5 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Adverse Reactions in Adult Subjects with Chronic Hepatitis B and Compensated Liver Disease The safety assessment of VEMLIDY was based on pooled data through the Week 96 data analysis from 1298 subjects in two randomized, double-blind, active-controlled trials, Trial 108 and Trial 110, in adult subjects with chronic hepatitis B and compensated liver disease. A total of 866 subjects received VEMLIDY 25 mg once daily [see Clinical Studies (14.2)]. Further safety assessment was based on pooled data from Trials 108 and 110 from subjects who continued to receive their original blinded treatment through Week 120 and additionally from subjects who received open-label VEMLIDY from Week 96 through Week 120 (n = 361 remained on VEMLIDY; n = 180 switched from TDF to VEMLIDY at Week 96). Based on the Week 96 analysis, the most common adverse reaction (all Grades) reported in at least 10% of subjects in the VEMLIDY group was headache. The proportion of subjects who discontinued treatment with VEMLIDY or TDF due to adverse reactions of any severity was 1.5% and 0.9%, respectively. Table 1 displays the frequency of the adverse reactions (all Grades) greater than or equal to 5% in the VEMLIDY group. Table 1 Adverse Reactions Frequencies of adverse reactions are based on all treatment-emergent adverse events, regardless of relationship to study drug. (All Grades) Reported in ≥5% of Subjects with Chronic HBV Infection and Compensated Liver Disease in Trials 108 and 110 (Week 96 analysis Double-blind phase.) VEMLIDY (N=866) TDF (N=432) Headache 12% 10% Abdominal pain Grouped term including abdominal pain upper, abdominal pain, abdominal pain lower, and abdominal tenderness. 9% 6% Cough 8% 8% Back pain 6% 6% Fatigue 6% 5% Nausea 6% 6% Arthralgia 5% 6% Diarrhea 5% 5% Dyspepsia 5% 5% Additional adverse reactions occurring in less than 5% of subjects in Trials 108 and 110 included vomiting, rash, and flatulence. The safety profile of VEMLIDY in subjects who continued to receive blinded treatment through Week 120 was similar to that at Week 96. The safety profile of VEMLIDY in subjects who remained on VEMLIDY in the open-label phase through Week 120 was similar to that in subjects who switched from TDF to VEMLIDY at Week 96.
Tabla de la etiqueta
| VEMLIDY (N=866) | TDF (N=432) | |
|---|---|---|
| Headache | 12% | 10% |
| Abdominal painGrouped term including abdominal pain upper, abdominal pain, abdominal pain lower, and abdominal tenderness. | 9% | 6% |
| Cough | 8% | 8% |
| Back pain | 6% | 6% |
| Fatigue | 6% | 5% |
| Nausea | 6% | 6% |
| Arthralgia | 5% | 6% |
| Diarrhea | 5% | 5% |
| Dyspepsia | 5% | 5% |
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Esto es solo una parte de la sección. Leer la etiqueta completa en DailyMed →
Interacciones de Tenofovir alafenamida
Cita de la sección «Drug Interactions» (interacciones) de la etiqueta aprobada por la FDA. Se muestra en inglés. Dígale a su farmacéutico todos los medicamentos, vitaminas y productos herbales que toma.
VEMLIDY is a substrate of P-glycoprotein (P-gp) and BCRP. Drugs that strongly affect P-gp and BCRP activity may lead to changes in VEMLIDY absorption. Consult the full prescribing information prior to and during treatment for potential drug-drug interactions. (7) 7.1 Potential for Other Drugs to Affect VEMLIDY VEMLIDY is a substrate of P-glycoprotein (P-gp) and BCRP.
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Drugs that strongly affect P-gp and BCRP activity may lead to changes in tenofovir alafenamide absorption (see Table 4). Drugs that induce P-gp activity are expected to decrease the absorption of tenofovir alafenamide, resulting in decreased plasma concentrations of tenofovir alafenamide, which may lead to loss of therapeutic effect of VEMLIDY. Coadministration of VEMLIDY with other drugs that inhibit P-gp and BCRP may increase the absorption and plasma concentration of tenofovir alafenamide. 7.2 Drugs Affecting Renal Function Because tenofovir is primarily excreted by the kidneys by a combination of glomerular filtration and active tubular secretion, coadministration of VEMLIDY with drugs that reduce renal function or compete for active tubular secretion may increase concentrations of tenofovir and other renally eliminated drugs and this may increase the risk of adverse reactions. Some examples of drugs that are eliminated by active tubular secretion include, but are not limited to, acyclovir, cidofovir, ganciclovir, valacyclovir, valganciclovir, aminoglycosides (e.g., gentamicin), and high-dose or multiple NSAIDs [see Warnings and Precautions (5.3)]. 7.3 Established and Other Potentially Significant Interactions Table 4 provides a listing of established or potentially clinically significant drug interactions. The drug interactions described are based on studies conducted with tenofovir alafenamide or are predicted drug interactions that may occur with VEMLIDY [For magnitude of interaction, see Clinical Pharmacology (12.3)]. Information regarding potential drug-drug interactions with HIV antiretrovirals is not provided (see the prescribing information for emtricitabine/tenofovir alafenamide for interactions with HIV antiretrovirals). The table includes potentially significant interactions but is not all inclusive. Table 4 Established and Other Potentially Significant Drug Interactions This table is not all inclusive. Concomitant Drug Class: Drug Name Effect on Concentration ↓ = decrease. Clinical Comment Anticonvulsants: ↓ tenofovir alafenamide When coadministered with carbamazepine, the tenofovir alafenamide dose should be increased to two tablets once daily. Coadministration of VEMLIDY with oxcarbazepine, phenobarbital, or phenytoin is not recommended. Carbamazepine Indicates that a drug interaction study was conducted. P-gp inducer Oxcarbazepine Phenobarbital Phenytoin Antimycobacterials: ↓ tenofovir alafenamide Coadministration of VEMLIDY with rifabutin, rifampin or rifapentine is not recommended. Rifabutin Rifampin Rifapentine Herbal Products: ↓ tenofovir alafenamide Coadministration of VEMLIDY with St. John's wort is not recommended.
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Esto es solo una parte de la sección. Leer la etiqueta completa en DailyMed →
Dosis de Tenofovir alafenamida
Cita de la sección «Dosage and Administration» (dosis y administración) de la etiqueta aprobada por la FDA. Se muestra en inglés. Su dosis es la que le receta su médico: no la cambie por su cuenta.
Testing: Prior to initiation of VEMLIDY, test patients for HIV infection. VEMLIDY alone should not be used in patients with HIV infection. Prior to or when initiating VEMLIDY, and during treatment on a clinically appropriate schedule, assess serum creatinine, estimated creatinine clearance, urine glucose, and urine protein in all patients. Also assess serum phosphorus in patients with chronic kidney disease.
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(2.1) Recommended dosage: 25 mg (one tablet) taken orally once daily with food. (2.2) Renal Impairment: VEMLIDY is not recommended in patients with estimated creatinine clearance below 15 mL per minute who are not receiving chronic hemodialysis. In patients on chronic hemodialysis, on hemodialysis days, administer VEMLIDY after hemodialysis. (2.3) Hepatic Impairment: VEMLIDY is not recommended in patients with decompensated (Child-Pugh B or C) hepatic impairment. (2.4) 2.1 Testing Prior to Initiation of VEMLIDY Prior to initiation of VEMLIDY, patients should be tested for HIV-1 infection. VEMLIDY alone should not be used in patients with HIV-1 infection [see Warnings and Precautions (5.2)]. Prior to or when initiating VEMLIDY, and during treatment with VEMLIDY on a clinically appropriate schedule, assess serum creatinine, estimated creatinine clearance, urine glucose, and urine protein in all patients. In patients with chronic kidney disease, also assess serum phosphorus [see Warnings and Precautions (5.3)]. 2.2 Recommended Dosage in Adults and Pediatric Patients 6 Years of Age and Older and Weighing at Least 25 kg The recommended dosage of VEMLIDY in adults and pediatric patients 6 years of age and older and weighing at least 25 kg is one 25 mg tablet taken orally once daily with food [see Clinical Pharmacology (12.3)]. 2.3 Dosage in Patients with Renal Impairment No dosage adjustment of VEMLIDY is required in patients with estimated creatinine clearance greater than or equal to 15 mL per minute, or in patients with end stage renal disease (ESRD; estimated creatinine clearance below 15 mL per minute) who are receiving chronic hemodialysis. On days of hemodialysis, administer VEMLIDY after completion of hemodialysis treatment. VEMLIDY is not recommended in patients with ESRD who are not receiving chronic hemodialysis [see Use in Specific Populations (8.6) and Clinical Pharmacology (12.3)]. No data are available to make dose recommendations in pediatric patients with renal impairment. 2.4 Dosage in Patients with Hepatic Impairment No dosage adjustment of VEMLIDY is required in patients with mild hepatic impairment (Child-Pugh A). VEMLIDY is not recommended in patients with decompensated (Child-Pugh B or C) hepatic impairment [see Use in Specific Populations (8.7) and Clinical Pharmacology (12.3)].
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Leer la etiqueta completa en DailyMed →
Tenofovir alafenamida en el embarazo
Cita de la parte sobre embarazo (Pregnancy) de la etiqueta aprobada por la FDA. Se muestra en inglés. Pregunte a su médico antes de tomar cualquier medicamento si está embarazada o planea estarlo.
Pregnancy Exposure Registry There is a pregnancy exposure registry that monitors pregnancy outcomes in women exposed to VEMLIDY during pregnancy. Healthcare providers are encouraged to register patients by calling the Antiretroviral Pregnancy Registry (APR) at 1-800-258-4263.
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Risk Summary Available data from the APR show no statistically significant difference in the overall risk of birth defects for tenofovir alafenamide (TAF) compared with the background rate for major birth defects of 2.7% in the U.S. reference population of the Metropolitan Atlanta Congenital Defects Program (MACDP) (see Data). The rate of miscarriage is not reported in the APR. The estimated background rate of miscarriage in clinically recognized pregnancies in the U.S. general population is 15% to 20%. In animal studies, no adverse developmental effects were observed when tenofovir alafenamide was administered during the period of organogenesis at exposure equal to or 51 times (rats and rabbits, respectively) the tenofovir alafenamide exposure at the recommended daily dose of VEMLIDY (see Data). No adverse effects were observed in the offspring when TDF was administered through lactation at tenofovir exposures of approximately 12 times the exposure at the recommended daily dosage of VEMLIDY. Data Human Data Based on prospective reports to the APR of over 1330 exposures to TAF-containing regimens during pregnancy resulting in live births (including over 1080 exposed in the first trimester and over 240 exposed in the second/third trimester), the prevalence of birth defects in live births was 3.9% (95% CI: 2.8% to 5.2%) and 4.8% (95% CI: 2.5% to 8.3%) following first and second/third trimester exposure, respectively, to TAF-containing regimens. Methodologic limitations of the APR include the use of MACDP as the external comparator group. The MACDP population is not disease-specific, evaluates women and infants from a limited geographic area, and does not include outcomes for births that occurred at less than 20 weeks gestation. Animal Data Embryonic fetal development studies performed in rats and rabbits revealed no evidence of impaired fertility or harm to the fetus. The embryo-fetal NOAELs (no observed adverse effect level) in rats and rabbits occurred at tenofovir alafenamide exposures similar to and 51 times higher than, respectively, the exposure in humans at the recommended daily dose. Tenofovir alafenamide is rapidly converted to tenofovir; the observed tenofovir exposure in rats and rabbits were 54 (rats) and 85 (rabbits) times higher than human tenofovir exposures at the recommended daily dose. Tenofovir alafenamide was administered orally to pregnant rats (25, 100, or 250 mg/kg/day) and rabbits (10, 30, or 100 mg/kg/day) through organogenesis (on gestation days 6 through 17, and 7 through 20, respectively). No adverse embryo-fetal effects were observed in rats and rabbits at tenofovir alafenamide exposures approximately similar to (rats) and 51 (rabbits) times higher than the exposure in humans at the recommended daily dose of VEMLIDY.
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Esto es solo una parte de la sección. Leer la etiqueta completa en DailyMed →
Sobredosis de Tenofovir alafenamida
Cita de la sección «Overdosage» (sobredosis) de la etiqueta aprobada por la FDA. Se muestra en inglés. Si alguien pudo haber tomado demasiado, llame a Poison Help al 1-800-222-1222 (o al 911 en una emergencia).
If overdose occurs, monitor patient for evidence of toxicity. Treatment of overdosage with VEMLIDY consists of general supportive measures including monitoring of vital signs as well as observation of the clinical status of the patient. Tenofovir is efficiently removed by hemodialysis with an extraction coefficient of approximately 54%.
— Etiqueta de la FDA: Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025. Leer la etiqueta completa en DailyMed →
Presentaciones y vía de administración
| Formas farmacéuticas | Tableta |
|---|---|
| Vía | Oral |
| Productos con receta | 1 en el directorio NDC de la FDA |
| Nombres de marca | Vemlidy |
Lo que pagan las farmacias (NADAC)
El Costo Promedio Nacional de Adquisición de Medicamentos (NADAC, por sus siglas en inglés) es el precio promedio que pagaron las farmacias minoristas de los EE. UU. por comprar una unidad de un medicamento (una tableta, un mL o un gramo), según una encuesta mensual de facturas de farmacias de los Centros de Servicios de Medicare y Medicaid (CMS). Los programas estatales de Medicaid lo usan para pagar a las farmacias.
Este no es el precio que usted paga. Lo que usted paga depende de su seguro médico (copago o coseguro), de su farmacia y de los descuentos, y las farmacias también cobran por despachar una receta. Pregunte a su farmacéutico o a su plan de salud cuál será su precio.
| Concentración y forma | Genérico o de marca | Pagan las farmacias |
|---|---|---|
| tenofovir alafenamide fumarate 25 mg tableta | De marca: Vemlidy | $52.00 por tableta |
Lista NADAC del 4 de noviembre de 2026; estos precios rigen desde el 21 de octubre de 2026. Solo se muestra cuando el código NDC de un envase coincide exactamente con la lista NADAC, y solo para esa concentración y forma: no se promedia entre concentraciones. Las concentraciones y formas que no aparecen aquí no tienen precio NADAC.
Empresas que tienen este medicamento
Empresas en el directorio NDC de la FDA: la empresa que aparece en el envase (fabricante o distribuidor), con su número de productos con receta.
- Gilead Sciences, Inc.1 producto
Historial de aprobación de la FDA
- NDA: Solicitud de nuevo medicamento (NDA): así se aprueba un medicamento nuevo, normalmente de marca.
| Solicitud | Patrocinador | Aprobada | Cambios aprobados después |
|---|---|---|---|
| NDA208464 VEMLIDY | Gilead Sciences Inc | 10 de noviembre de 2016 | 12, el último 27 de marzo de 2024 2024: Eficacia · 2024: Eficacia · 2022: Fabricación (CMC) |
Escasez
La lista de escasez de la FDA no incluye estos productos.
Retiros del mercado
No aparece ningún retiro vinculado a estos productos (por su código NDC) en los informes de la FDA.
Identificadores oficiales
| RxCUI (RxNorm) | 1858261, 1858267 |
|---|---|
| ID (SPL set ID) de la etiqueta citada | 72e6b33c-0351-4070-9172-eeaa186c01d2 |
| Etiquetas de la FDA (SPL) | 1 |
| Solicitudes de la FDA | NDA208464 |
| Principios activos (FDA) | TENOFOVIR ALAFENAMIDE |
Siguientes pasos
- Encuentre una farmacia cerca de ustedPregunte qué precio le corresponde y si su producto está afectado por un retiro
- Últimos retiros de medicamentos de la FDATodos los medicamentos, los más recientes primero
- Gilead Sciences, Inc.Fabricante o distribuidor
- Todos los medicamentos con receta de la A a la ZBusque por nombre genérico, de marca o en español
Fuentes
- Etiqueta aprobada por la FDA en DailyMed (Biblioteca Nacional de Medicina) — Vemlidy, Gilead Sciences, Inc., vigente desde el 14 de julio de 2025; vía openFDA, datos de la FDA exportados el 30 de octubre de 2026, consultados el 31 de octubre de 2026
- NDC Directory (openFDA) — Administración de Alimentos y Medicamentos de los EE. UU. (FDA), datos de la FDA exportados el 30 de octubre de 2026, consultados el 31 de octubre de 2026
- Drugs@FDA (openFDA) — Administración de Alimentos y Medicamentos de los EE. UU. (FDA), datos de la FDA exportados el 30 de octubre de 2026, consultados el 31 de octubre de 2026
- Drug recall enforcement reports (openFDA) — Administración de Alimentos y Medicamentos de los EE. UU. (FDA), datos de la FDA exportados el 27 de octubre de 2026, consultados el 31 de octubre de 2026
- Drug shortages (openFDA) — Administración de Alimentos y Medicamentos de los EE. UU. (FDA), datos de la FDA exportados el 30 de octubre de 2026, consultados el 31 de octubre de 2026
- Nombre en español: RxNorm (Biblioteca Nacional de Medicina de EE. UU.) y Wikidata, vinculados por el identificador RxNorm (RxCUI) del principio activo, sin coincidencias aproximadas.
La FDA ofrece los datos de openFDA tal cual; pueden estar incompletos. Guíese siempre por la etiqueta que viene con su medicamento. Buscador de informes de retiros de la FDA →
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