What the four ingredients actually do, set honestly against the "memory support" marketing.
Cognizil is marketed for memory and focus. To judge whether that holds up, it helps to look at what each named ingredient is actually studied for.
A polyamine studied for autophagy (cellular "clean-up") and, in some research, cognition and healthy ageing. This is the one ingredient with a plausible memory rationale.
Soluble/prebiotic fibres, studied for digestion, satiety and blood sugar. Useful nutrition — but not classic memory ingredients.
A plant sugar studied mainly for blunting sugar absorption. Again, a metabolic angle rather than a cognitive one.
Put together, Cognizil leans fibre-and-metabolic. A general wellness benefit is plausible; a strong, specific "memory" effect is not well supported by these four — especially at doses that aren't disclosed. Treat any cognitive benefit as unproven and keep expectations modest.