How much berberine do you need per day?
For blood sugar regulation in type 2 diabetes, 500 mg three times daily (1500 mg per day) for at least 8 to 12 weeks is the best-supported schedule; for cholesterol, 500 mg twice daily is the starting point. If you have a condition or use medication, always discuss this with your doctor.
For blood sugar regulation in type 2 diabetes, berberine has been studied most thoroughly. In research, people with type 2 diabetes received 500 mg three times daily (1500 mg per day) for at least 8 to 12 weeks. A meta-analysis of 28 studies shows that berberine lowers fasting blood sugar by an average of 0.54 mmol/L and post-meal blood sugar by 0.94 mmol/L. Above 2 grams per day, the effect actually decreases. If you have type 2 diabetes, always discuss the use of berberine with your doctor, as it can affect the action of blood sugar medications.
For LDL cholesterol and triglycerides, take 500 mg twice daily (1000 mg per day) for at least 8 to 12 weeks. On the label, look for 'berberine (as berberine HCl)', typically 500 mg per capsule or tablet. A combination product with silymarin showed the greatest effect. Whether you are young or old, and exactly how long you use it, makes no demonstrable difference to the cholesterol effect.
If you want to try berberine for weight management, 1000 mg per day (500 mg twice daily) is the most commonly used schedule, for at least 8 to 12 weeks. The effects on weight and waist circumference are small. A large study in 337 people with obesity and fatty liver found no effect on abdominal fat or liver fat after six months: for that goal, it is probably not worth your money.
Ordinary berberine is poorly absorbed. A small pilot study with five participants showed that 100 mg of dihydroberberine, which consists of small modified berberine particles, produced higher blood levels than 500 mg of ordinary berberine. Whether that also leads to better effects on blood sugar or cholesterol was not demonstrated in that study. An expensive 'optimised absorption' label therefore need not convince you.
Mild gastrointestinal complaints are a known side effect. If you use multiple medications, tell your doctor or pharmacist: berberine can affect the breakdown of certain medicines.
Evidence comes from a meta-analysis, two randomised studies, a placebo-controlled study, and a small pilot study (n=5). The pilot study on absorption is too small to draw firm conclusions. The study combining berberine with cinnamon cannot distinguish which component is effective.
Is berberine safe to use if you are taking medication?
Berberine can influence the blood levels of certain medications, although the clinical significance is unclear in most cases. If you are taking medication, discuss this with your doctor or pharmacist before using berberine.
How much curcumin should you take per day?
There is no fixed 'correct dose' of curcumin: for joint pain, less than 1000 mg per day works just as well as more, but for other uses this varies. Always combine curcumin with piperine or another formulation with better absorption, otherwise barely anything is demonstrably present in your blood.
How much ashwagandha do you need per day?
Research points to 300-600 mg per day as the effective range for stress, anxiety and athletic performance, but the quality of evidence is still limited and the optimal dose varies by goal and by extract.
What do we know about berberine patches?
Berberine patches show interesting results in laboratory and animal research for wounds, eczema, psoriasis and joint complaints, but no studies in humans have yet been conducted, so no clinical conclusions can currently be drawn from them.
Does berberine help with weight loss?
Berberine leads to modest weight loss in some studies, but a large, well-designed study found no effect on visceral abdominal fat. It is not a powerful slimming agent, but may offer additional benefits for people with elevated cholesterol.
Does berberine help against high blood sugar (the natural metformin)?
Approach this with caution. Berberine measurably lowers blood sugar, but EFSA was unable to establish a safe intake level due to indications of DNA damage and liver injury, an EU procedure is underway that could lead to restrictions, and it has strong interactions with medications. Do not use it on your own, especially not alongside diabetes medication or during pregnancy.