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Drug Safety-related Labeling Changes (SrLC)

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TEKAMLO (NDA-022545)

(ALISKIREN HEMIFUMARATE; AMLODIPINE BESYLATE)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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11/04/2016 (SUPPL-20)

Approved Drug Label (PDF)

6 Adverse Reactions

6.2 Postmarketing Experience

Aliskiren: (addition of) hyponatremia

8 Use in Specific Populations

8.1 Pregnancy

(PLLR conversion)

Risk Summary

Tekamlo can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin­ angiotensin system during the second and third trimesters of pregnancy reduces fetal renal function and increases fetal and neonatal morbidity and death. Most epidemiologic studies examining fetal abnormalities after exposure to antihypertensive use in the first trimester have not distinguished drugs affecting the renin­ angiotensin system from other antihypertensive agents. When pregnancy is detected, discontinue Tekamlo as soon as possible.

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated background risk of major malformations and miscarriage in clinically recognized pregnancies is 2-4%, and 15-20%, respectively.

Clinical Considerations

Disease-associated maternal and/or embryo/fetal risk

Hypertension in pregnancy increases the maternal risk for pre-eclampsia, gestational diabetes, premature delivery, and delivery complications (e.g., need for cesarean section, and post-partum hemorrhage). Hypertension increases the fetal risk for intrauterine growth restriction and intrauterine death. Pregnant women with hypertension should be carefully monitored and managed accordingly.

Fetal/Neonatal adverse reactions

Aliskiren

Use of drugs that act on the renin-angiotensin system in the second and third trimesters of pregnancy can result in the following: reduced fetal renal function leading to anuria and renal failure, oligohydramnios, fetal lung hypoplasia and skeletal deformations, including skull hypoplasia, hypotension, and death. In the unusual case that there …

In patients taking Tekamlo during pregnancy, perform serial ultrasound examinations to assess the intra-amniotic environment. Fetal testing may be appropriate, based on the week of gestation. Patients and physicians should be aware, however, that oligohydramnios may not appear until after the fetus has sustained irreversible injury. Closely observe infants with histories of in utero exposure to Tekamlo for hypotension, oliguria, and hyperkalemia. If oliguria or hypotension occur in neonates with a history of in utero exposure to Tekamlo, support blood pressure and renal perfusion. Exchange transfusions or dialysis may be required as a means of reversing hypotension and substituting for disordered renal function.

Data

Animal Data

No reproductive toxicity studies have been conducted with the combination of aliskiren and amlodipine besylate. However, these studies have been conducted for aliskiren and amlodipine besylate alone.

Amlodipine

No evidence of teratogenicity or embryo/fetal toxicity was found when pregnant rats and rabbits were treated orally with amlodipine maleate at doses up to 10 mg amlodipine/kg/day (approximately 10 and 20 times the MRHD based on body surface area, respectively) during their respective periods of major organogenesis. However for rats, litter size was significantly decreased … These animal studies were conducted according to the standards of the time.

8.2 Lactation

(PLLR conversion)

Risk Summary

There is no information regarding the presence of Tekamlo or aliskiren in human milk, the effects on the breastfed infant, or the effects on milk production.  Limited published studies report that amlodipine is present in human milk. However, there is insufficient information to determine the effects of amlodipine on the breastfed infant. There is no available information on the effects of amlodipine on milk production. Because of the potential for serious adverse reactions, including hypotension, hyperkalemia and renal impairment in nursing  infants, advise a nursing woman that breastfeeding is not recommended during treatment with Tekamlo.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

Patient Counseling Information

Lactation (Addition)

Advise nursing women that breastfeeding is not recommended during treatment with Tekamlo.

Patient Information

What are the possible side effects of Tekamlo?

Less common side effects include (addition of) and low level of sodium in blood.