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Drug Safety-related Labeling Changes (SrLC)

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IMITREX (NDA-020132)

(SUMATRIPTAN SUCCINATE)

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

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12/09/2025 (SUPPL-31)

Approved Drug Label (PDF)

6 Adverse Reactions

6.2 Postmarketing Experience

Additions and/or revisions underlined:

…

Reproductive System and Breast Disorders

Breast pain [see Use in Specific Populations (8.2)].

8 Use in Specific Populations

8.2 Lactation

Additions and/or revisions underlined:

Risk Summary

Sumatriptan is excreted in human milk following subcutaneous administration. There is no information regarding sumatriptan concentrations in milk from lactating women following administration of IMITREX tablets. There are no data on the effects of sumatriptan on the breastfed infant or the effects of sumatriptan on milk production. Use of sumatriptan may be associated with transient breast pain [see Adverse Reactions (6.2)].

The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for IMITREX tablets and any potential adverse effects on the breastfed infant from sumatriptan or from the underlying maternal condition.

Clinical Considerations

Infant exposure to sumatriptan can be minimized by avoiding breastfeeding for 12 hours after treatment with IMITREX tablets.

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

PATIENT COUNSELING INFORMATION

Additions and/or revisions underlined:

…

Lactation

Advise breastfeeding  women that they may develop transient breast pain when taking IMITREX. Advise breastfeeding women that avoiding breastfeeding for 12 hours after treatment with IMITREX can minimize their infant’s exposure to sumatriptan [see Use in Specific Populations (8.2)].

Ability to Perform Complex Tasks

Treatment with IMITREX tablets may cause somnolence and dizziness; instruct patients to evaluate their ability to perform complex tasks after administration of IMITREX tablets.

IMITREX is a trademark owned by or licensed to the GSK group of companies. The other brand listed is a trademark owned by or licensed to its owner and is not owned by or licensed to the GSK group of companies. The maker of this brand is not affiliated with and does not endorse the GSK group of companies or its products.

12/14/2017 (SUPPL-29)

Approved Drug Label (PDF)

8 Use in Specific Populations

8.1 Pregnancy

(PLLR conversion, please refer to label)

8.2 Lactation

(PLLR conversion, additions underlined)

Risk Summary

Sumatriptan is excreted in human milk following subcutaneous administration (see Data). There is no information regarding sumatriptan concentrations in milk from lactating women following administration of IMITREX tablets. There are no data on the effects of sumatriptan on the breastfed infant or the effects of sumatriptan on milk production.

The developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for IMITREX tablets and any potential adverse effects on the breastfed infant from sumatriptan or from the underlying maternal condition.

Clinical Considerations

Infant exposure to sumatriptan can be minimized by avoiding breastfeeding for 12 hours after treatment with IMITREX tablets.

Data

Following subcutaneous administration of a 6 mg dose of IMITREX injection in 5 lactating volunteers, sumatriptan was present in milk.

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

PATIENT COUNSELING INFORMATION

(additions underlined)

…

Pregnancy

Advise patients to notify their healthcare provider if they become pregnant during treatment or plan to become pregnant.

Nursing Lactation

Advise patients to notify their healthcare provider if they are breastfeeding or plan to breastfeed.

…

PATIENT INFORMATION

(additions underlined)

…

Before taking IMITREX, tell your healthcare provider about all of your medical conditions, including if you:

…

  • are pregnant or plan to become pregnant. It is not known if IMITREX can harm your unborn baby.
  • are breastfeeding or plan to breastfeed. IMITREX passes into your breast milk. It is not known if this can harm your baby. Talk with your healthcare provider about the best way to feed your baby if you take IMITREX.

…