Karisalai (Eclipta prostrata)

Karisalai (Eclipta prostrata) is a traditional Siddha herb containing wedelolactone and eclalbasaponins as primary bioactive compounds. It demonstrates hepatoprotective effects through antioxidant mechanisms that reduce liver damage and oxidative stress.

Origin & History

Karisalai (Eclipta prostrata) is a prostrate annual herb from the Asteraceae family native to tropical and subtropical regions worldwide, particularly India where it grows as a common weed in moist areas. The whole plant (leaves, stem, flower, root, fruits) is harvested and processed through solvent extraction using ethyl acetate or ethanol to isolate bioactive compounds including coumestans, flavonoids, and triterpenes.

Historical & Cultural Context

In Siddha and Ayurvedic medicine, Karisalai (known as Bhringraj in Sanskrit) has been used for over 1,000 years for liver disorders, hair growth, skin diseases, and as a general tonic. Traditional formulations include Karisalai Ennai (oil) for inflammation and dermatological issues, reflecting its role as a cholagogue, alterative, hepato-tonic, and diuretic in Indian traditional medicine.

Health Benefits

• Hepatoprotective effects demonstrated in controlled animal trials, showing protection against acetaminophen-induced liver damage through antioxidant mechanisms (preclinical evidence)
• Antioxidant activity shown in cell models, with concentration-dependent reduction in reactive oxygen species and Bax/Bcl-2 ratio (in vitro evidence)
• Traditional use for hair growth promotion and scalp health (traditional evidence only, no clinical trials found)
• Anti-inflammatory potential attributed to flavonoids and coumestans (traditional use, mechanism proposed but not clinically validated)
• Traditionally used as anthelmintic (intestinal worm expulsion) when juice mixed with castor oil (traditional evidence only)

How It Works

Karisalai's hepatoprotective effects operate through wedelolactone and eclalbasaponin compounds that enhance antioxidant enzyme activity including superoxide dismutase and catalase. These compounds reduce reactive oxygen species formation and protect cellular membranes from lipid peroxidation. The herb also modulates cytochrome P450 enzymes involved in liver detoxification pathways.

Scientific Research

Human clinical trials for Eclipta prostrata are notably absent in the available research, with no PubMed PMIDs for large-scale RCTs identified. The strongest evidence comes from preclinical studies including controlled animal trials showing hepatoprotective effects of Karisalai Karpam formulation and in vitro studies demonstrating antioxidant activity of ethyl acetate extracts against oxidative stress models.

Clinical Summary

Preclinical animal studies demonstrate Karisalai's ability to protect against acetaminophen-induced liver damage, with significant reduction in liver enzyme markers. Cell culture studies show concentration-dependent antioxidant activity and reduced reactive oxygen species formation. However, human clinical trials are limited, with most evidence coming from traditional use and laboratory studies. Current research focuses primarily on hepatoprotective and antioxidant properties rather than other traditional claims.

Nutritional Profile

{"macronutrients": {"protein": "Approximately 5.4 g per 100 g of dried leaves", "fiber": "Approximately 11.2 g per 100 g of dried leaves"}, "micronutrients": {"vitamins": {"vitamin_C": "Approximately 3.5 mg per 100 g of dried leaves", "vitamin_A": "Present in trace amounts, primarily as beta-carotene"}, "minerals": {"iron": "Approximately 1.8 mg per 100 g of dried leaves", "calcium": "Approximately 320 mg per 100 g of dried leaves", "phosphorus": "Approximately 110 mg per 100 g of dried leaves"}}, "bioactive_compounds": {"wedelolactone": "Approximately 0.5 mg per 100 g of dried leaves", "eclalbasaponin": "Present in trace amounts"}, "bioavailability_notes": "The bioavailability of minerals such as iron and calcium may be affected by the presence of oxalates and phytates in the plant, which can inhibit absorption. Cooking or processing methods may enhance the bioavailability of certain nutrients."}

Preparation & Dosage

No standardized clinical dosages have been established from human trials. Traditional use includes juice at 1/2 ounce mixed with castor oil for anthelmintic purposes, and Karisalai Karpam tablets (dose unspecified in studies). Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Milk Thistle, Turmeric, Schisandra, Artichoke, N-Acetylcysteine

Safety & Interactions

Karisalai is generally considered safe when used traditionally, but comprehensive safety data is limited. Potential interactions with liver-metabolized medications may occur due to its effects on cytochrome P450 enzymes. Pregnancy and breastfeeding safety has not been established through clinical studies. Individuals with liver conditions should consult healthcare providers before use, as it may affect liver enzyme levels.