SugarMD - This Vitamin Can Be Potentially Deadly For Diabetics!

Short Summary

Main recommendation: People taking high-dose vitamin C, especially people with diabetes or using glucose monitors, should be aware that vitamin C can make glucose readings falsely high and should keep intake under 500 milligrams a day. The speaker explains that this interference can lead to dangerous insulin dosing based on incorrect numbers.

Key Points

• High doses of vitamin C can cause most finger-stick glucose meters to show readings that are falsely higher than actual blood sugar, such as showing 90 mg/dL when the true level is 40 mg/dL (the speaker's example).
• The meter error happens because enzymes on the test strips oxidize ascorbic acid (vitamin C), producing an electrical current the meter reads as glucose.
• Acting on a falsely high reading could lead to unnecessary insulin, which may cause hypoglycemia and symptoms such as dizziness, nausea, shakiness, and sweating that are then misread.
• Continuous glucose monitors such as Libre and Dexcom can also be affected when vitamin C intake is high.
• Vitamin C is widely used for wound healing, collagen production, antioxidant support, and as a complement in some cancer care, and Dr. Ergin cites studies suggesting severe sepsis patients may benefit from early vitamin C supplementation to reduce morbidity and mortality.

Details Worth Noting

• Concrete instructions: Keep vitamin C intake below 500 milligrams per day, since the speaker says amounts above this can cause the meter and sensor problems, and people using sensors should avoid excessive amounts. Check whether multivitamins or cold products such as Airborne contain high vitamin C before use. Dr. Ergin notes that spectrophotometric glucose meters avoid this interference, but says they are rare and expensive and mainly used in ICU settings.
• Most laboratory blood glucose tests use the hexokinase method, which is specific to glucose and is not affected by ascorbic acid; the interference mainly affects finger-stick meters.
• Doctors and patients should be aware of this interaction, especially in ICU patients receiving intravenous vitamin C.
• The speaker frames the risk as a warning to be careful rather than advice to stop taking vitamin C, and the video is informational, not individualized medical advice.

Bottom Line

High-dose vitamin C can distort glucose meter and sensor readings, so anyone checking blood sugar while taking vitamin C should account for that before making treatment decisions.