Answer:

Holy basil, also called "tulsi" in Ayurvedic medicine, may help lower blood sugar levels in people with type 2 diabetes and reduce symptoms of stress and anxiety, according to several small preliminary studies using holy basil extracts. However, ConsumerLab's results of tests of popular holy basil supplements raise concerns about quality, as most products failed to contain even the minimum expected amounts of potentially beneficial holy basil compounds. One product was also contaminated with lead. For product-specific details, including our Top Pick for holy basil, and information about the clinical evidence for holy basil, its side effects and potential drug interactions, see our Holy Basil Supplements Review.

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2 Comments

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Crystal20164
June 11, 2020

Have any studies been done on dried Holy Basil leaves? I generally buy from Mountain Rose Herbs and ingest in a tea.

ConsumerLab.com
June 15, 2020

In traditional Indian medicine, tea made from holy basil leaves has been used for stomach and liver ailments (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5376420/) but we aren't aware of any studies using holy basil tea.

Steve 17728
April 7, 2019

I take holy basil in capsules form, at night, and have recommended it to friends and family. It seems to have some stress relieving effects, and helps me with sleep troubles. I hope that this article means that consumer labs will be testing holy basil supplements soon.

ConsumerLab.com
March 18, 2020

Hi Steve - We have now tested holy basil supplements. The results and our Top Pick among products, plus information about the clinical evidence for holy basil, safety and side effects are available in the Holy Basil Supplements Review https://www.consumerlab.com/reviews/holy-basil-supplements-reviewed/holy-basil/.

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