Buffered Vitamin C Powder by Thorne

Buffered vitamin C powder is for people who want high-dose vitamin C without stomach burn. It fits athletes in heavy training, smokers or those exposed to pollution (both tend to run lower vitamin C), and anyone with low fruit-and-vegetable intake. It’s also useful when you’re taking oral iron and want better absorption, or during periods of wound healing under clinician guidance. If you’re truly deficient, that needs medical care first; this is a high-maintenance dose, not scurvy treatment.

Ascorbate (vitamin C) donates electrons to neutralize free radicals and helps regenerate vitamin E in cell membranes. It’s a required cofactor for enzymes that stabilize collagen, the protein scaffolding in skin, vessels, and tendons, and it’s involved in making carnitine (the molecule that shuttles fats into mitochondria for energy). Vitamin C also reduces non‑heme iron to a form the gut absorbs more easily, which is why pairing it with iron often raises Ferritin (iron stores) more efficiently.

Mix one scoop in water or juice once daily. This delivers 2,350 mg vitamin C with calcium, magnesium, and potassium ascorbates that buffer acidity, so most people tolerate it better than plain ascorbic acid. Take with food if you’re sensitive, or split the scoop morning and afternoon to reduce loose stools. For iron repletion, take vitamin C with your iron and away from calcium‑rich meals that compete for absorption.

If you’ve had calcium oxalate kidney stones or have chronic kidney disease, avoid megadoses and talk to your clinician; very high vitamin C can raise urine oxalate. If your Ferritin is high or you have hemochromatosis (tend to overload iron), large doses that enhance iron absorption are the wrong move. Certain glucose monitors, especially some flash sensors, read falsely high with high-dose vitamin C—check your device’s guidance. Vitamin C can also cause false negatives on fecal occult blood tests.

People ask if vitamin C prevents colds; taken daily, it slightly shortens cold duration, but it doesn’t reliably prevent infections. Buffered forms like Thorne’s are gentler on the stomach because the acid is paired with minerals, not because the vitamin works differently. Expect gut tolerance to be your limiter—if stools loosen, reduce or split the dose.