Quick Summary

Apigenin is a naturally occurring flavonoid belonging to the class of antioxidants and polyphenols. It is sourced from various fruits, vegetables, and herbs and has been studied primarily for its potential antioxidant and anti-inflammatory properties. While preclinical studies provide some insights into possible mechanisms, clinical evidence from human trials remains limited and inconclusive. Research into its potential benefits and safety is ongoing.

What is it?

Apigenin is a plant-derived flavonoid found in a variety of fruits, vegetables, and herbs such as parsley, celery, and chamomile. Chemically, it is classified as a polyphenol and is recognized for its antioxidant effects. In botanical terms, flavonoids like apigenin are secondary metabolites thought to contribute to the plant’s natural defense mechanisms.

How It May Work in the Body

Apigenin is proposed to function primarily through antioxidant and anti-inflammatory pathways. Its proposed mechanisms include:

  • Scavenging free radicals to reduce oxidative stress
  • Modulating inflammatory signaling pathways
  • Potentially regulating cellular redox balance

These activities may support cellular health and reduce factors associated with oxidative damage. However, it is important to note that most mechanistic evidence comes from in vitro experiments or animal models. Human evidence to conclusively demonstrate these mechanisms in clinical settings is currently insufficient.

Common Supplement Forms

Apigenin supplements are commonly available as:

  • Capsules
  • Tablets
  • Extracts standardized to apigenin content

These forms vary primarily by concentration and formulation but specific advantages of one form over another have not been well established in the scientific literature.

Typical Dosage and How It Is Used

There is no officially established recommended daily intake (RDI) or adequate intake (AI) for apigenin supplements. Dosages reported in clinical studies vary widely, and a standard dosage has yet to be determined.

Cautious use is advised due to limited clinical data on safety and efficacy. Consumers should consult healthcare professionals before starting supplementation, especially if they have underlying health conditions or are taking other medications.

Natural Sources

Apigenin occurs naturally in various dietary sources, including:

  • Parsley
  • Celery
  • Chamomile
  • Other fruits and vegetables containing flavonoids

Including these foods in a balanced diet provides natural amounts of apigenin and other flavonoids.

Absorption and Bioavailability

Current information on the absorption and bioavailability of apigenin in humans is limited. Factors affecting its uptake and metabolism have not been comprehensively studied. Different supplement formulations might influence bioavailability, but specific data comparing forms or identifying absorption enhancers or inhibitors are not available at this time.

Potential Benefits: What Does the Evidence Say?

Research into apigenin’s potential benefits focuses mainly on its antioxidant and anti-inflammatory support:

  • Antioxidant and Anti-inflammatory Support: Preliminary human clinical research suggests apigenin may exhibit antioxidant and anti-inflammatory activities. However, evidence from well-controlled human studies is limited and results have been mixed. Many findings originate from laboratory or animal studies rather than clinical trials involving humans.

To date, there is insufficient clinical evidence to confirm consistent health benefits in humans.

Side Effects and Safety

No common side effects, contraindications, or specific safety concerns have been well documented for apigenin supplements in humans. However, due to the limited amount of safety data, especially from long-term use studies, caution is warranted.

Safety during pregnancy and breastfeeding has not been established owing to insufficient human data. Individuals who are pregnant, breastfeeding, have medical conditions, or are taking medications should consult a healthcare provider before use.

Drug and Supplement Interactions

There are currently no well-documented interactions between apigenin supplements and drugs or other supplements reported in the available evidence. Nonetheless, given the limited research, potential interactions cannot be ruled out.

Who Should Be Careful?

Caution is advised for the following groups:

  • Pregnant or breastfeeding individuals
  • People with existing medical conditions
  • Those taking prescription or over-the-counter medications
  • Individuals planning surgery

Consultation with a healthcare professional is recommended before beginning apigenin supplementation, particularly within these populations.

Pregnancy, Breastfeeding and Special Populations

Apigenin’s safety profile during pregnancy and lactation has not been well studied. There is insufficient human data to support the safety of apigenin supplements in these special populations. Therefore, use should only occur under the guidance of a qualified healthcare provider.

Quality, Standardization and What to Look For

When choosing apigenin supplements, consider the following quality factors:

  • Standardization to apigenin content, which ensures consistent active ingredient levels
  • Reputable manufacturers with third-party testing and quality certifications
  • Clear labeling of contents and dosage instructions

Due to the lack of regulatory standards specific to apigenin supplements, consumers should prioritize products with transparent quality controls.

Frequently Asked Questions

Is apigenin effective as an antioxidant?
Laboratory and animal studies suggest antioxidant effects, but human clinical evidence is limited and inconclusive.
Can apigenin supplements reduce inflammation?
Some preliminary research indicates potential anti-inflammatory properties, but more rigorous human trials are needed to confirm this.
Are there any side effects of taking apigenin?
No common side effects have been reported, yet limited safety data means caution is advised.
How much apigenin should I take daily?
There is no official recommended daily intake or standardized dosage; consult a healthcare professional before use.
Can I get enough apigenin from food?
Yes, apigenin is naturally present in foods such as parsley, celery, and chamomile, but amounts vary depending on diet.

Evidence Limitations

  • Lack of multiple large, high-quality randomized controlled trials in humans
  • Predominance of in vitro and animal studies limiting clinical relevance
  • Inconsistent dosing and supplement formulations in available studies
  • Insufficient data on long-term safety and potential interactions

References

Disclaimer: This page provides information based on current evidence and is not intended to offer medical advice. People who are pregnant, breastfeeding, have medical conditions, use medication, or are planning surgery should consult a qualified healthcare professional before using apigenin supplements or any dietary supplement.

Last reviewed: June 2024