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Common name: Salai guggal
Botanical name: Boswellia serrata
© Steven Foster
Boswellia is a moderate to large branching tree found in the dry hilly areas of India. When the tree trunk is tapped, a gummy oleoresin is exuded. A purified extract of this resin is used in modern herbal preparations.
Boswellia has been used in connection with the following conditions (refer to the individual health concern for complete information):
| Science Ratings | Health Concerns |
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| Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support and/or minimal health benefit. | |
In the ancient Ayurvedic medical texts of India, the gummy exudate from boswellia is grouped with other gum resins and referred to collectively as guggals. Historically, the guggals were recommended by Ayurvedic physicians for a variety of conditions, including osteoarthritis, rheumatoid arthritis, diarrhea, dysentery, pulmonary disease, and ringworm.
The gum oleoresin consists of essential oils, gum, and terpenoids. The terpenoid portion contains the boswellic acids that have been shown to be the active constituents in boswellia.1 Today, extracts are typically standardized to contain 37.5–65% boswellic acids.
Studies have shown that boswellic acids have an anti-inflammatory action2 —much like the conventional nonsteroidal anti-inflammatory drugs (NSAIDs) used for inflammatory conditions. Boswellia inhibits pro-inflammatory mediators in the body, such as leukotrienes.3 As opposed to NSAIDs, long-term use of boswellia does not appear to cause irritation or ulceration of the stomach. One small, controlled, double-blind trial has shown that boswellia extract may be helpful for ulcerative colitis.4
The standardized extract of the gum oleoresin of boswellia is recommended by many doctors. For rheumatoid arthritis or osteoarthritis, 150 mg of boswellic acids are taken three times per day.5 As an example, if an extract contains 37.5% boswellic acids, 400 mg of the extract would be taken three times daily. Treatment with boswellia generally lasts eight to twelve weeks. In the one clinical trial to date, people with ulcerative colitis used 550 mg of boswellia extract three times per day.
Boswellia is generally safe when used as directed. Rare side effects can include diarrhea, skin rash, and nausea. Any inflammatory joint condition should be closely monitored by a physician.
At the time of writing, there were no well-known drug interactions with boswellia.
1. Safayhi H, Sailer ER, Amnon HPT. 5-lipoxygenase inhibition by acetyl-11-keto-b-boswellic acid. Phytomed 1996;3:71–2.
2. Safayhi H, Mack T, Saieraj J, et al. Boswellic acids: Novel, specific, nonredox inhibitors of 5-lipoxygenase. J Pharmacol Exp Ther 1992;261:1143–6.
3. Singh GB, Atal CK. Pharmacology of an extract of salai guggal ex-Boswellia serrata, a new non-steroidal anti-inflammatory agent. Agents Actions 1986;18:407–12.
4. Gupta I, Parihar A, Malhotra P, et al. Effects of Boswellia serrata gum resin in patients with ulcerative colitis. Eur J Med Res 1997;2:37–43.
5. Etzel R. Special extract of Boswellia serrata (H15) in the treatment of rheumatoid arthritis. Phytomed 1996;3:91–4.
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires February 2010.
