Cissus quadrangularis is a perennial climbing plant native to tropical regions of Asia and Africa, used for centuries in traditional medicine and now sold widely as a dietary supplement. Its distinctive square-shaped stem gives it its name, and that stem is the part most commonly harvested for extracts. The plant has drawn modern research interest primarily for three things: bone healing, joint pain relief, and weight management.
What the Plant Contains
The stems and aerial parts of Cissus quadrangularis are rich in several classes of bioactive compounds. The most notable are ketosteroids, which are plant-based compounds with structural similarities to anabolic hormones. These are thought to be responsible for much of the plant’s bone-building activity. The plant also contains flavonoids like quercetin, and triterpenoids like friedelin. Commercial supplements are typically standardized to their ketosteroid content, though the testing methods used across the industry vary considerably, and reported concentrations can range from around 1.4% to nearly 13% depending on which method a manufacturer uses.
Bone Health and Fracture Healing
The strongest traditional use of Cissus quadrangularis is for bone repair, and this is where the most interesting lab research exists. In cell studies, extracts of the plant stimulated the growth and activity of osteoblasts, the cells responsible for building new bone. Treated bone cells showed increased production of the early proteins needed for bone formation, along with significantly more mineral deposition over a three-week period compared to untreated cells. The plant’s ketosteroids appear to drive cell proliferation, while its flavonoids (particularly quercetin and resveratrol) activate signaling pathways that push immature bone cells toward maturity. The extract also appears to upregulate the body’s insulin-like growth factor system, which plays a key role in tissue repair.
In human terms, some clinical reports suggest the plant can reduce typical fracture healing time from 14 to 16 weeks down to 8 to 10 weeks, though it’s worth noting that human trial data remains limited and most of these observations come from small pilot studies rather than large controlled trials.
Joint Pain Relief
A pilot study in 29 exercise-trained men with chronic joint pain found that taking 3,200 mg of Cissus quadrangularis daily for eight weeks reduced their total joint symptom scores by roughly 31%. The men reported improvements across multiple dimensions of joint function, including pain during activity, stiffness, and difficulty performing physical tasks. This is a small, uncontrolled study, so the results are preliminary, but the size of the improvement was statistically significant and large enough to be practically meaningful for participants.
Weight and Metabolic Health
A randomized, double-blind, placebo-controlled trial of 123 overweight and obese adults tested a Cissus quadrangularis formulation over eight weeks. The results were striking across nearly every metric measured. Obese participants taking the supplement without any dietary changes lost an average of 6.9% of their body weight, compared to just 2.4% in the placebo group. Those who combined the supplement with a calorie-controlled diet lost 8.5%.
Body fat percentage dropped by 6% to 8% in the treatment groups versus under 2% with placebo. BMI reductions followed a similar pattern.
The blood work changes were equally notable. Total cholesterol dropped by about 27% in the supplement groups compared to 3% with placebo. LDL (“bad”) cholesterol fell by 18% to 32%, triglycerides dropped by 29% to 37%, and HDL (“good”) cholesterol rose by 43% to 51%. Fasting blood sugar also improved, declining 13% to 16% versus about 5% with placebo. These are large effect sizes for a single supplement, and while the trial was well-designed, it involved only 123 people and has not been replicated at scale.
Safety Profile
Based on the clinical research conducted so far, Cissus quadrangularis extracts appear to be well tolerated and largely free of adverse effects at commonly used doses. No serious side effects have been reported in published trials. That said, the total body of human safety data is still relatively small, and long-term studies spanning more than a few months are lacking. Most supplement formulations deliver between 500 mg and 1,600 mg twice daily, with the joint pain study using a total of 3,200 mg per day.
What to Keep in Mind
Cissus quadrangularis is one of the more promising traditional medicinal plants to enter the supplement market, with early clinical data supporting real effects on joint comfort, body composition, and metabolic markers. The bone healing evidence, while biologically compelling, still relies heavily on lab studies and small human trials. The weight loss data is genuinely impressive on paper but comes from a single study that needs independent replication before drawing firm conclusions. Standardization across supplement brands also remains inconsistent, meaning the potency of what you’re buying can vary widely depending on the manufacturer and their testing methods.