Purslane is a leafy plant eaten as a vegetable in many countries and known as one of the richest leafy sources of the plant omega-3 alpha-linolenic acid. Seeds and extracts have been studied for blood sugar and blood fats.
Also known as: Portulaca oleracea, purslane extract, pigweed, verdolaga.
A fatty liver trial used 300 mg a day of extract for 12 weeks (Darvish Damavandi 2021). In the 2019 meta-analysis, effects were larger in studies using more than 1.5 g a day (Hadi 2019). These are study protocols, not a recommendation.
The NIH Dietary Supplement Label Database lists purslane products such as Purslane Extract Powder from BulkSupplements.com as a dietary supplement. Under the 1994 dietary supplement law (DSHEA), FDA does not approve dietary supplements before they are marketed, and the maker, not FDA, is responsible for safety and labeling.
What studies show: a 2019 meta-analysis of 6 trials in 352 people found purslane lowered fasting blood sugar by about 4.5 mg/dL and triglycerides by about 19 mg/dL; total, LDL and HDL cholesterol did not change significantly (Hadi 2019). In a 12-week placebo-controlled trial in 74 people with fatty liver disease, 300 mg a day of extract did not change liver enzymes, blood fats or blood sugar compared with placebo, though several improved within the purslane group (Darvish Damavandi 2021). The trials are small and most come from Iran.
Safety: the abstracts do not report safety problems. The sources here do not describe drug interactions.
We could not find a single published half-life or time to peak for purslane that applies to a supplement dose, so we do not list one. Plant extracts are mixtures of many compounds, so no single figure would describe them.
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