Side Effects and Cautions

• Astragalus is considered safe for most adults. Its possible side effects are not well known because astragalus is generally used in combination with other herbs.
• Astragalus may interact with medications that suppress the immune system, such as the drug cyclophosphamide (Cytoxan, Neosar) taken by cancer patients and similar drugs taken by organ transplant recipients.
• People should avoid using astragalus species such as "locoweed" that grow in the United States, as these other species may have different effects and side effects.
• Tell your health care providers about any complementary and alternative practices you use. Give them a full picture of what you do to manage your health. This will help ensure coordinated and safe care.