Study design:

Eligible subjects underwent 1 week of screening, 2 weeks of exclusive oral PED, and 2 weeks of follow-up after returning to their regular diet (Supplemental Figure 1). The primary endpoint was the change in stool microbiome after PED and regular food reintroduction. Secondary endpoints included tolerance, LBT normalization rate, stool form changes, symptomatic response, and adverse events. The PED (mBiota Elemental, Good LFE, Santa Monica, USA) was provided in 300-calorie packets, adjusted eucalorically to each participant’s caloric needs (Supplemental Figure 2).

Additional packets were provided for hunger, with daily consumption documented. Water intake was unrestricted, but other foods were prohibited during the diet phase. After completing the diet, participants transitioned to bland foods (e.g., rice, potatoes, eggs, chicken, beef) for 2–3 days before resuming their regular diet.

The only novel part about this branded one is that it’s palatable. That’s actually a big advantage because a plain elemental diet tastes so bad that it’s hard to tolerate.

You can search for DIY elemental diet recipes and there are several sources for the amino acid blends they use. People report some success, if they can tolerate the taste.

Pretty sure carnivore or some other no-fiber low carb would be a bit cheaper :)