Tea and Echinacea drug interactions - a phase IV clinical study of FDA data

Summary:

Drug interactions are reported among people who take Tea (black tea) and Echinacea (echinacea). Common drug interactions include diarrhoea among females and weight decreased among males.

The phase IV clinical study analyzes what interactions people have when they take Tea and Echinacea. It is created by eHealthMe based on reports of 12 people who take the same drugs from the FDA, and is updated regularly.

What is Tea?

Tea has active ingredients of black tea. eHealthMe is studying from 509 Tea users. Check the latest studies of Tea.

What is Echinacea?

Echinacea has active ingredients of echinacea. It is often used in immune response. eHealthMe is studying from 1,930 Echinacea users. Check the latest studies of Echinacea.

eHealthMe: drug outcomes in the real world

eHealthMe runs one of the largest post-marketing drug safety studies in the world. We study millions of patients and 5,000 more each day. Our data-driven phase IV clinical trials have been referenced on 800+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Tools to study our phase IV findings are available to the public, anonymous and free >>>.

On Aug, 24, 2026

12 people who take Tea and Echinacea together, and have interactions are studied.

What are the common drug interactions of Tea and Echinacea, by gender? *:

female:

Diarrhoea
Grip strength decreased
Neuropathy peripheral (surface nerve damage)
Oedema peripheral (superficial swelling)
Peripheral swelling
Pulmonary embolism (blockage of the main artery of the lung)
Sensory disturbance (sense disturbance)
Thrombosis (formation of a blood clot inside a blood vessel)
Ulcer haemorrhage (bleeding ulcer)
Upper respiratory tract infection

male:

Weight decreased
Balance disorder
Blood creatinine increased
Dyspnoea (difficult or laboured respiration)
Tremor (trembling or shaking movements in one or more parts of your body)

What are the common drug interactions of Tea and Echinacea, by age (0-1 to 60+)? *:

0-1:

n/a

2-9:

n/a

10-19:

n/a

20-29:

n/a

30-39:

n/a

40-49:

Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect)
Asthenia (weakness)
Grip strength decreased
Neuropathy peripheral (surface nerve damage)
Sensory disturbance (sense disturbance)

50-59:

Ulcer haemorrhage (bleeding ulcer)
Dysphonia (speech disorder attributable to a disorder of phonation)
Pulmonary embolism (blockage of the main artery of the lung)
Thrombosis (formation of a blood clot inside a blood vessel)

60+:

Weight decreased
Abdominal discomfort
Blood creatinine increased
Chills (felling of cold)
Diarrhoea
Dyspnoea (difficult or laboured respiration)
Tremor (trembling or shaking movements in one or more parts of your body)

What are the existing conditions these people have? *

Multiple Myeloma (cancer of the plasma cells): 4 people, 33.33%
High Blood Pressure: 2 people, 16.67%
Muscle Spasms (muscle contraction): 2 people, 16.67%
Multiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 2 people, 16.67%
High Blood Cholesterol: 2 people, 16.67%
Weight Loss: 1 person, 8.33%
Cardiac Disorder: 1 person, 8.33%
Chronic Lymphocytic Leukaemia (cancer in which the bone marrow makes too many lymphocytes (a type of white blood cell)): 1 person, 8.33%
Diabetes: 1 person, 8.33%
Eye Disorder: 1 person, 8.33%

* Approximation only. Some reports may have incomplete information.

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