10 Possible Side Effects Of Rudbeckia Hirta (Black-Eyed Susan)

This article explains in details the 10 most common side effects of Rudbeckia hirta if used imporperly.

1. Aggravates respiratory issues

Rudbeckia hirta causes allergic reactions in some individuals.

This is due to the presence of sesquiterpene lactones, a class of compounds found in the plant's leaves and flowers. These compounds can stimulate an immune response, leading to symptoms such as skin irritation, itching, and rash when contact is made with the plant.

Additionally, inhaling pollen or other airborne particles from Rudbeckia hirta may also trigger allergic reactions in sensitive individuals.

2. Aggravates respiratory issues

Rudbeckia hirta triggers asthma attacks due to its high pollen count and volatile organic compounds (VOCs) released by its flowers.

These allergens can cause respiratory irritation, leading to wheezing, coughing, and shortness of breath in individuals with asthma.

As the plant blooms profusely during the summer months, exposure to its potent allergenic particles may exacerbate asthma symptoms, making it challenging for sufferers to breathe comfortably outdoors.

3. Aggravates respiratory issues

Rudbeckia hirta induces dizziness episodes due to its potential interactions with certain medications and the release of histamine in some individuals.

The plant's active compounds may combine with antidepressants, antihistamines, or sedatives, leading to a decrease in blood pressure and increased risk of dizziness.

Additionally, Rudbeckia hirta contains sesquiterpenes, which can cause histamine release, resulting in symptoms such as lightheadedness, fainting, and dizziness.

4. Aggravates respiratory issues

Rudbeckia hirta elicits skin rashes in some individuals due to its ability to cause phototoxicity.

The sap of the plant contains a chemical called sesquiterpene lactones, which can react with sunlight and cause skin irritation, leading to redness, itching, and blistering upon exposure to UV rays.

This reaction is more likely to occur in people with sensitive skin or those who spend extended periods outdoors while handling the plant.

5. Aggravates respiratory issues

6. Aggravates respiratory issues

Rudbeckia hirta increases blood pressure due to its ability to stimulate the nervous system and cause a release of stress hormones like adrenaline.

This increased activity in the body can lead to an elevation in blood pressure, particularly in individuals who are already prone to hypertension or have underlying cardiovascular conditions.

As a result, Rudbeckia hirta may not be suitable for everyone, especially those with pre-existing heart health concerns.

7. Aggravates respiratory issues

Rudbeckia hirta stimulates rapid heartbeat due to its containing ligands that bind to cardiac receptors, leading to increased heart rate and palpitations.

This is attributed to the plant's rich content of flavonoids, specifically apigenin and luteolin, which have been shown to affect the cardiovascular system by influencing sympathetic nervous activity.

As a result, individuals using Rudbeckia hirta may experience an elevated resting pulse rate or an irregular heartbeat.

8. Aggravates respiratory issues

Rudbeckia hirta enhances anxiety symptoms by triggering an increase in cortisol levels.

The plant contains a compound called sesquiterpene lactone, which can stimulate the body's stress response and amplify feelings of tension and apprehension.

Additionally, some people may experience an adverse reaction to the pollen or other allergenic compounds found in Rudbeckia hirta, leading to an exacerbation of anxiety symptoms.

9. Aggravates respiratory issues

Rudbeckia hirta reduces cognitive function.

This side effect is likely attributed to the plant's ability to interact with the body's nervous system, particularly the brain. The flavonoids and sesquiterpenes present in Rudbeckia hirta may bind to neurotransmitters, altering their activity and leading to impaired mental processing and concentration.

Additionally, the plant's saponins could contribute to this effect by influencing the transmission of signals between neurons.

10. Aggravates respiratory issues

Rudbeckia hirta impacts thyroid function due to its high content of compounds called sesquiterpenoids and triterpenoids.

These phytochemicals have been shown to influence the production and regulation of thyroid hormones, potentially disrupting normal thyroid function in some individuals.

This may lead to changes in metabolism, energy levels, or even affect the development of the thyroid gland.