Comparison

L-Glutamine + FOS Powder and Muscle Fiber Unflavored Powder

L-Glutamine + FOS Powder (Douglas Laboratories) lists 3 distinct ingredients and Muscle Fiber Unflavored Powder (FINAFLEX) 5 (rows of one ingredient counted once); 3 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.68.

Amount per serving (and % of the Daily Value)
IngredientL-Glutamine + FOS PowderMuscle Fiber Unflavored Powder
Carbohydrate1.5 g3 g
Glutamine2.5 g5 g
Fructo-Oligosaccharides1,500 mg3,000 mg
Vitamin D12.5 mcg (63%)
Fiber3 g

Amounts are per serving as DSLD gives them: L-Glutamine + FOS Powder, 1 tsp; Muscle Fiber Unflavored Powder, 7.5 g. Current labels entered February 2014 and August 2018. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.

Each product on its own