Precautions and Warnings

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Herbs and teas may cause side effects, allergic reactions, or interactions with medications, supplements, medical conditions, anesthesia, and laboratory testing. The cautions provided below highlight important known concerns but do not include every possible warning or interaction.

Consult your physician and pharmacist before use, especially if you take medication, have a medical condition, are pregnant or breastfeeding, are preparing for surgery, or are purchasing for a child. Do not discontinue or replace prescribed treatment with an herbal product. Stop use and seek medical care if you experience a serious or unexpected reaction.

Ashwagandha Root
Avoid during pregnancy and breastfeeding. Not recommended with thyroid or autoimmune disorders or before surgery. May cause drowsiness, stomach upset, or, rarely, liver injury. May interact with thyroid, diabetes, blood-pressure, sedative, anticonvulsant, and immunosuppressant medications.

Burdock Root
Avoid with ragweed, daisy, or other Asteraceae-family allergies. Use caution with diabetes medications and diuretics. Safety during pregnancy and breastfeeding has not been established.

Calendula Flower
Avoid with ragweed, daisy, marigold, chrysanthemum, or other Asteraceae-family allergies. Allergic skin reactions are possible. Safety of medicinal oral use during pregnancy and breastfeeding has not been established.

Chamomile Flower
May cause serious allergic reactions, particularly in people allergic to ragweed, daisies, chrysanthemums, or marigolds. May interact with blood thinners, sedatives, medicines processed by the liver, and possibly hormonal birth control. Pregnancy and breastfeeding safety is uncertain.

Ceylon Cinnamon Powder
May affect blood glucose and increase the effects of diabetes medications. Medicinal amounts may interact with blood thinners or increase bleeding risk. Use caution with liver disease, during pregnancy or breastfeeding, and before surgery. Stop use if mouth irritation or an allergic reaction occurs.

Comfrey — TOPICAL USE ONLY
Do not consume or prepare as tea. Comfrey contains pyrrolizidine alkaloids associated with serious liver injury. For external use, avoid broken or damaged skin, prolonged use, pregnancy, breastfeeding, children, and liver disease unless specifically approved by a qualified clinician.

Dandelion Leaf
Avoid with ragweed or other Asteraceae-family allergies. Consult a clinician before use with gallstones, bile-duct obstruction, ulcers, kidney disease, diuretics, lithium, diabetes medications, or blood thinners. Pregnancy and breastfeeding safety has not been established.

Dandelion Root
Avoid with ragweed or other Asteraceae-family allergies. Do not use with gallstones, bile-duct obstruction, or an active ulcer without medical guidance. May interact with diuretics, lithium, diabetes medications, and blood thinners. Pregnancy and breastfeeding safety has not been established.

Echinacea purpurea
May cause serious allergy, especially in people allergic to ragweed or other daisy-family plants. Use caution with autoimmune conditions, liver conditions, immunosuppressants, and medicines processed by the liver. Children may develop a rash. Consult a clinician during pregnancy or breastfeeding.

Elderberries
Use only ripe, correctly identified berries with all stems, leaves, and unripe berries removed. Raw or improperly prepared elderberries and other plant parts may contain cyanogenic compounds and cause nausea, vomiting, or diarrhea. Cook as directed. Consult a clinician before use during pregnancy, breastfeeding, or in children.

Eucalyptus Leaf
Keep away from infants and young children. Avoid with a seizure disorder unless medically approved. Safety during pregnancy and breastfeeding has not been established. Eucalyptus essential oil is highly concentrated and must never be substituted for eucalyptus leaf tea or swallowed.

Ginger Root
May cause heartburn, diarrhea, abdominal discomfort, or mouth and throat irritation. Consult a clinician before use with blood thinners, antiplatelet drugs, diabetes medications, or before surgery. Seek guidance before using medicinal amounts during pregnancy.

Hibiscus Flowers and Petals
May lower blood pressure or blood glucose and could increase the effects of related medications. Pregnancy and breastfeeding safety has not been established. Stop use if an allergic reaction or significant stomach upset occurs.

Lavender Flower
May cause drowsiness or an allergic reaction. Use caution with alcohol, sedatives, driving, and before surgery. Safety of medicinal amounts during pregnancy and breastfeeding has not been established.

Lemon Balm Leaf
May cause drowsiness. Use caution with alcohol, sedatives, driving, anesthesia, thyroid conditions, and thyroid medications. Pregnancy and breastfeeding safety has not been established.

Lemongrass
May cause an allergic reaction or stomach upset and may affect blood glucose or blood pressure. Avoid medicinal use during pregnancy unless approved by a clinician. Breastfeeding safety has not been established.

Marshmallow Root
May delay the absorption of oral medications. Take at least two hours apart from medications unless a pharmacist advises otherwise. Use caution with diabetes medications. Pregnancy and breastfeeding safety has not been established.

Moringa Leaf
May lower blood glucose or blood pressure and interact with related medications. Medicinal use during pregnancy or breastfeeding should be approved by a clinician. Do not substitute moringa root or bark, which have different safety concerns.

Mullein Leaf
Strain tea through a very fine filter to remove the plant’s tiny hairs, which may irritate the mouth and throat. Reliable safety and interaction information is limited. Avoid medicinal use during pregnancy, breastfeeding, or in young children unless approved by a clinician.

Nettle Leaf
May have diuretic effects and may lower blood pressure or blood glucose. Use caution with diuretics, diabetes medications, blood-pressure medications, kidney or heart disease, and medically required fluid restrictions. Pregnancy and breastfeeding safety has not been established.

Passionflower
May cause drowsiness, dizziness, or confusion. Do not combine with alcohol, sedatives, or other products that cause drowsiness, and do not drive after use. Avoid during pregnancy because it may stimulate uterine contractions. Discuss use before surgery or while breastfeeding with a clinician.

Peppermint Leaf
May worsen acid reflux or heartburn and may cause stomach discomfort or allergy. Keep concentrated menthol products away from an infant’s face. Seek guidance before medicinal use during pregnancy or breastfeeding.

Plantain Leaf — Plantago Species
This product is Plantago leaf and is not related to the banana-like food called plantain. Allergic reactions are possible. It may affect blood glucose, so use caution with diabetes medications. Pregnancy, breastfeeding, and pediatric safety information is limited.

Rose Hips
May cause stomach upset. Consult a clinician before use with a history of kidney stones, iron-overload disorders, blood thinners, or other medications. Safety of medicinal amounts during pregnancy and breastfeeding has not been established.

Rosemary Leaf
Culinary amounts are commonly used as food, but concentrated or medicinal amounts require caution during pregnancy, with seizure disorders, bleeding disorders, diuretics, lithium, and before surgery. Rosemary essential oil is not interchangeable with the leaf and must not be swallowed.

St. John’s Wort — CRITICAL INTERACTION WARNING
Do not use with prescription or over-the-counter medication unless both a physician and pharmacist approve. St. John’s wort can interact dangerously with antidepressants and reduce the effectiveness of birth control, blood thinners, transplant medications, seizure medications, HIV treatments, cancer treatments, heart medications, and many other drugs. It may cause serotonin toxicity and increased sensitivity to sunlight. Avoid during pregnancy and breastfeeding.

Thyme Leaf
Avoid with thyme, mint-family, or related plant allergies. Use caution with blood thinners and before surgery. Safety of medicinal use during pregnancy, breastfeeding, and early childhood has not been established. Thyme essential oil is not interchangeable with thyme leaf tea.

Valerian Root
Causes drowsiness. Do not combine with alcohol, sedatives, sleep medications, or other products that cause drowsiness, and do not drive after use. Do not abruptly discontinue after prolonged regular use without guidance. Rare liver injury has been reported. Avoid during pregnancy and breastfeeding.

Yarrow Flower
Avoid with ragweed, daisy, chrysanthemum, or other Asteraceae-family allergies. Avoid medicinal use during pregnancy. Breastfeeding safety has not been established. May increase bleeding or sensitivity to sunlight; use caution with blood thinners and before surgery.

Calming Rest Tea
May cause drowsiness. Do not combine with alcohol, sedatives, or sleep medications, and do not drive after use. Avoid during pregnancy unless medically approved. Use caution before surgery and with ragweed or daisy-family allergies. Contains decaffeinated green tea, which may retain a small amount of caffeine.

Chai Tea
Contains caffeine. Consider total caffeine intake during pregnancy or breastfeeding and use caution with caffeine sensitivity, heart conditions, or blood-pressure concerns. Ginger and spices may interact with blood thinners or diabetes medications.

Earl Grey Tea
Contains caffeine. Consider total caffeine intake during pregnancy or breastfeeding and use caution with caffeine sensitivity, heart conditions, and blood-pressure concerns. Contains bergamot oil, which may interact with certain medications.

English Breakfast Tea
Contains caffeine. Consider total caffeine intake during pregnancy or breastfeeding. Use caution with caffeine sensitivity, heart conditions, blood-pressure concerns, and medications affected by caffeine.

Gunpowder Green Tea
Contains caffeine. Consider total caffeine intake during pregnancy or breastfeeding and avoid if caffeine-sensitive. Green tea may interact with nadolol, atorvastatin, raloxifene, blood thinners, stimulants, and other medications.

Mad Hatter Tea
Contains licorice root and yellow dock. Avoid excessive or prolonged use during pregnancy or with high blood pressure, heart or kidney disease, low potassium, or liver concerns. May interact with diuretics, corticosteroids, digoxin, blood-pressure medications, and other medicines.

Relaxing Tea
May cause drowsiness. Do not combine with alcohol, sedatives, sleep medications, or other products that cause drowsiness, and do not drive after use. Avoid during pregnancy unless medically approved. Use caution before surgery and with ragweed or daisy-family allergies.

Rooibos Tea
Naturally caffeine-free. Allergic reactions are possible, and rare liver reactions have been reported. Stop use and seek medical advice for yellowing of the skin or eyes, dark urine, or other serious symptoms. Pregnancy, breastfeeding, and medication-interaction information is limited.

Serendipitea Tea
Contains licorice root. Avoid excessive or prolonged use during pregnancy or with high blood pressure, heart or kidney disease, or low potassium. May interact with diuretics, corticosteroids, digoxin, blood-pressure medications, and other medicines.

Stay Well Tea
Contains goldenseal and echinacea. Avoid during pregnancy and breastfeeding, and do not give to infants. Echinacea may cause serious allergy in people sensitive to ragweed or daisy-family plants and may interact with immunosuppressants. Goldenseal may interact with numerous medications; consult a physician and pharmacist before use.

Tulsi Tea
May lower blood glucose and affect blood clotting. Use caution with diabetes medications, blood thinners, antiplatelet medications, fertility concerns, and before surgery. Avoid medicinal use during pregnancy unless approved by a clinician. Breastfeeding safety information is limited.

Winter’s Remedy Tea
Contains licorice root. Avoid excessive or prolonged use during pregnancy or with high blood pressure, heart or kidney disease, or low potassium. May interact with diuretics, corticosteroids, digoxin, blood-pressure medications, and other medicines. Consult a clinician before giving to a child.