Unifiram is a newer compound very similar in structure to Sunifiram, but the synthesizing process is much more difficult and costly. Differences include a slightly smaller necessary dosage, and in-vitro studies have shown it to increase the amplitude of fEPSP(field excitatory postsynaptic potential) in the hippocampus of mice, meaning it essentially increases the overall power output in the brains neural field, strengthening the signals and increasing their firing speed farther than Suni's LTP-tuning effects.
An essential nutrient, Choline is the precursor to a neurotransmitter heavily involved in memory and nerve communication(Acetylcholine). It can be found naturally in fattier proteins such as poultry, eggs, milk and almonds. It has an especially synergistic reaction with racetams, fueling their effects.
Choline supplements are often taken as a form of 'smart drug' or nootropic due to the role the neurotransmitter acetylcholine plays in various cognition systems within the brain. Choline is a chemical precursor or "building block" needed to produce acetylcholine, and research suggests that memory, intelligence, and mood are mediated at least in part by acetylcholine metabolism in the brain.