What Is Calendula and How Does It Work?
Calendula suggested uses include as an antispasmodic, for cancers, conjunctivitis, menstrual cramps (dysmenorrhea), fever, hemorrhoids, inflammation (oral), leg ulcers, peptic ulcers, and wounds.
Calendula is effective for burn healing. Calendula is possibly effective in wound healing.
Calendula is available under the following different brand and other names: bride of the sun, Calendula officinalis, garden marigold, gold bloom, golden flower of Mary, holligold, marigold, marybud, and pot marigold.
Dosages of Calendula
Suggested Dosing
Tea
- 1 cup orally three times daily; 1-2 g dried flowers/150 ml water
Liquid extract
- 0.5-1 ml orally three times daily; 1:1 in 40% alcohol
Tincture
- 0.3-1.2 ml orally three times daily; 1:5 in 90% alcohol
Ointment
- Apply topically as needed
Dosage Considerations – Should be Given as Follows:
- See "Suggested Dosing"
What Are Side Effects Associated with Using Calendula?
Side effects of calendula are uncommon and may include:
- Allergic reactions
This document does not contain all possible side effects and others may occur. Check with your physician for additional information about side effects.
What Other Drugs Interact with Calendula?
If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor, health care provider or pharmacist first.
- Calendula has no known severe, serious, moderate, or mild interactions with other drugs.
This information does not contain all possible interactions or adverse effects. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share this information with your doctor and pharmacist. Check with your health care professional or doctor for additional medical advice, or if you have health questions, concerns or for more information about this medicine.
What Are Warnings and Precautions for Calendula?
Warnings
This medication contains calendula. Do not take bride of the sun, Calendula officinalis, garden marigold, gold bloom, golden flower of Mary, holligold, marigold, marybud, or pot marigold if you are allergic to calendula or any ingredients contained in this drug.
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center immediately.
Contraindications
- Hypersensitivity to Asteraceae plants (ragweed, etc.), chrysanthemums, daisies, marigolds
Effects of Drug Abuse
- None
Short-Term Effects
- See "What Are Side Effects Associated with Using Calendula?"
Long-Term Effects
- See "What Are Side Effects Associated with Using Calendula?"
Cautions
- Concurrent sedative agents.
- WARNING: use flower extract, not whole herb
Pregnancy and Lactation
- There is no information available about use of calendula during pregnancy or while breastfeeding. Consult your doctor.
From 
Drugs and Treatment Resources
https://reference.medscape.com/drug/monocor-zebeta-bisoprolol-342367