MegaIgG2000 Powder by Microbiome Labs

If loose stools or urgency linger after a gut infection or antibiotics, this bovine immunoglobulin can help calm things down. It’s useful in IBS with diarrhea, traveler’s diarrhea recovery, and for people whose stool tests show gut irritation (for example, elevated stool calprotectin) even when routine labs like hs-CRP (a blood marker of inflammation) are normal. Because it’s dairy‑free and only 2 grams of protein per scoop, it also suits kids and adults who avoid milk proteins. If symptoms are severe, most patients need higher total daily grams than a single scoop.

IgG (immunoglobulin G) in this formula binds bacterial components like LPS (lipopolysaccharide, a toxin from gram‑negative bacteria) and other antigens in the intestinal lumen. By neutralizing those triggers before they interact with the gut lining, it reduces the “antigen load” on the immune system and can ease bloating and stool frequency. These proteins act locally rather than being absorbed. In clinical use, responders often notice firmer stools and less urgency within 2 to 4 weeks.

Start with 1 scoop daily in 16 ounces of cold water or any cool beverage; hot liquids can denature proteins and reduce activity. Take with or without food. If you’re still symptomatic after a week, many clinicians step up gradually to 2–4 scoops per day in divided doses until stools stabilize, then taper to the lowest effective maintenance. It pairs well with probiotics and fiber, which work on different parts of gut function.

Avoid if you have a confirmed beef allergy, since it’s derived from bovine serum. It’s dairy‑free (no lactose or casein), so milk intolerance alone isn’t a reason to avoid. For oral vaccines, separate by at least several days on either side, since IgG could bind vaccine antigens in the gut. In pregnancy or with complex autoimmune disease, use only with clinician guidance.