Most vitamins are unlikely to increase blood sugar levels. If you take vitamins daily, you may wonder if vitamins raise blood sugar, especially if you have diabetes. Vitamin B3 or niacin, taken to lower bad cholesterol, increases insulin resistance and raises blood sugar levels. Irregularities in blood sugar are often associated with low levels of magnesium in the blood.
Magnesium supplements have been shown to lower fasting blood sugar levels. Each increase in the dose of magnesium by 50 mg produces an increasingly better result on blood sugar. Magnesium is responsible for the secretion and activity of insulin in body tissues. This normally takes the form of a blood test, such as a blood test with a vitamin panel that identifies deficiencies in any of the 13 essential vitamins that the human body needs.
Summary ALA may help to gradually lower fasting blood sugar and A1C, with greater effects at daily doses of up to 1200 mg. The review also noted that berberine supplements taken together with diabetes medications helped lower blood sugar more than medications alone (1). In one study, people with type 2 diabetes who took 400 mg of gymnema leaf extract daily for 18 to 20 months experienced a 29% drop in blood sugar (fasting). After two months of taking a daily supplement of 4,500 IU of vitamin D, both fasting blood sugar and A1C improved.
American ginseng, in particular, is an effective blood sugar regulator in healthy people and people with type 2 diabetes. Caffeine, taken in liquid form or in pill form found in many energy and weight-loss supplements, can cause blood sugar levels to rise. Summary Capsules or juices made with aloe leaves may help lower fasting blood sugar and A1C in people with prediabetes or type 2 diabetes. Many supplements, such as cinnamon, ginseng, other herbs, vitamin D, magnesium, probiotics and plant compounds such as berberine, can help lower blood sugar.
Summary Chromium may improve the action of insulin in the body and lower blood sugar in people with type 2 diabetes and possibly in people with type 1 diabetes, but it does not cure the disease. Work with your doctor to find the right dose if you have just been prescribed a medication known to cause problems with your blood sugar. Knowing which supplements help lower blood sugar may give patients a better chance of preventing diabetes. Corticosteroids, or steroids for short, are known to cause high blood sugar levels in people with diabetes.
Additional research suggests that this herb may help lower fasting blood sugar and A1C in type 1 diabetes (insulin-dependent) and may reduce cravings for sweets by suppressing the sensation of a sweet taste in the mouth (25, 2).