Some additional mind and memory boosting supplements are:
Acetyl-l-Carnitine 300 mg is quite popular since many people notice an effect within a few hours.
CDP-Choline may also have some sexual enhancing properties.
DMAE in high doses can cause tenseness of the neck muscles
Sam-e is a potent mood lifter and should be treated with respect. Use no more than 100 or 200 mg.

Phosphatidylcholine and Homocysteine
A report in the July 2005 issue of the American Journal of Clinical Nutrition, indicates that a high daily dose of choline, supplemented as phosphatidylcholine, lowers fasting as well as postmethionine-loading plasma homocysteine concentrations in healthy men with mildly elevated homocysteine concentrations. If high homocysteine concentrations indeed cause cardiovascular disease, choline intake may reduce cardiovascular disease risk in humans.

Phosphatidylcholine Summary
Research findings regarding the role of phosphatidylcholine in cognition have not been consistent. My professional and personal experience with phosphatidylcholine does not indicate that this supplement has any dramatic effects on mental abilities. Based on the available evidence, it appears that the cognitive benefits of taking lecithin are likely to be minor. As a rule, individuals who consume a wide variety of foods are not likely to suffer from phosphatidylcholine deficiency. Whether lecithin supplements benefit a subgroup of seniors with age related memory decline has not yet been adequately determined. It is certainly possible that there are those who may have a biochemical difficulty in making adequate amounts of phosphatidylcholine and would benefit from additional supplementation. If you are planning to take phosphatidylcholine , keep your dosages low, such as three grams a day or less. At this point there does not seem to be a need to supplement with phosphatidylcholine for cognitive purposes unless someone has an unusual diet and is not ingesting enough of this nutrient.
     However, phosphatidylcholine could be of help to those with high homocysteine levels.

Dr. Sahelian's Experience with Phosphatidylcholine
I have interviewed many individuals who have taken lecithin in order to improve cognition. The reports have not been impressive. The majority of users do not notice any obvious benefits from lecithin. Lecithin does not provide me with cognitive effects. I have taken fifteen capsules a day of lecithin for a week without a noticeable effect on alertness, vision, or mood. Each capsule contained 1,200 mg of phosphatidylcholine. However, it is possible that long term use of smaller amounts my have benefits for certain individuals.

Phosphatidylcholine Research Update
Therapeutic applications of citicoline for stroke and cognitive dysfunction in the elderly: a review of the literature.
Conant R, Schauss AG. American Institute for Biosocial and Medical Research, Puyallup, WA
Altern Med Rev. 2004 Mar;9(1):17-31.
Citicoline (CDP-choline; cytidine 5'-diphosphocholine), a form of the essential nutrient choline, shows promise of clinical efficacy in elderly patients with cognitive deficits, inefficient memory, and early-stage Alzheimer's disease. CDP-choline has also been investigated as a therapy in stroke patients, although the results of trials to date are inconclusive. Produced endogenously, CDP-choline serves as a choline donor in the metabolic pathways for biosynthesis of acetylcholine and neuronal membrane phospholipids, chiefly phosphatidylcholine. The principal components of CDP-choline, choline and cytidine, are readily absorbed in the GI tract and easily cross the blood-brain barrier. Exogenous CDP-choline, as the sodium salt, has been researched in animal experiments and human clinical trials that provide evidence of its cholinergic and neuroprotective actions. As a dietary supplement, CDP-choline appears useful for improving both the structural integrity and functionality of the neuronal membrane that may assist in membrane repair. This review, while not intended to be exhaustive, highlights the published, peer-reviewed research on CDP-choline with brief discussions on toxicology and safety, mechanisms of action, and pharmacokinetics.

"Brain-specific" nutrients: a memory cure?
McDaniel MA, Maier SF, Einstein GO. Department of Psychology, University of New Mexico,
Nutrition. 2003 Nov-Dec;19(11-12):957-75.
We review the experimental evaluations of several widely marketed nonprescription compounds claimed to be memory enhancers and treatments for age-related memory decline. We generally limit our review to double-blind placebo-controlled studies. The compounds examined are phosphatidylcholine, citicoline (CDP-choline), vinpocetine, and acetyl-L-carnitine. The choline compounds phosphatidylcholine and CDP-choline are thought to promote synthesis and transmission of neurotransmitters important to memory. Phosphatidylcholine has not proven effective for improving memory in patients with probable Alzheimer's disease. The issue remains open for older adults without serious degenerative neural disease. Research on citicoline is practically nonexistent, but one study reported a robust improvement in story recall for a small sample of normally aging older adults who scored lower than their peers in baseline testing. Vinpocetine increases blood circulation and metabolism in the brain. Animal studies have shown that vinpocetine can reduce the loss of neurons due to decreased blood flow. In three studies of older adults with memory problems associated with poor brain circulation or dementia-related disease, vinpocetine produced significantly more improvement than a placebo in performance on global cognitive tests reflecting attention, concentration, and memory. Effects on episodic memory per se have been tested minimally, if at all. Acetyl-L-carnitine participates in cellular energy production, a process especially important in neurons, and in removal of toxic accumulation of fatty acids. Animal studies show that acetyl-L-carnitine reverses the age-related decline in the number of neuron membrane receptors. Studies of patients with probable Alzheimer's disease have reported nominal advantages over a range of memory tests for acetyl-L-carnitine-treated patients relative to placebo groups. Significant differences have been reported rarely, however. Whether acetyl-L-carnitine would have mnemonic benefits for aging adults without brain disease is untested as far as we know. CONCLUSIONS: In sum, for most of the "brain-specific" nutrients we review, some mildly suggestive effects have been found in preliminary controlled studies using standard psychometric memory assessments or more general tests designed to reveal cognitive impairment.

Lecithin for dementia and cognitive impairment.
Cochrane Database Syst Rev. 2003;(3):CD001015.
Alzheimer's disease sufferers have been found to have a lack of the enzyme responsible for converting choline into acetylcholine within the brain. Lecithin is a major dietary source of choline, so extra consumption may reduce the progression of dementia. To determine the efficacy of lecithin in the treatment of dementia or cognitive impairment, the Cochrane Dementia and Cognitive Improvement Group's Specialized Register was searched on 15 May 2002 using the terms lecithin and phosphatidylcholine. MAIN RESULTS: Twelve randomized trials have been identified involving patients with Alzheimer's disease (265 patients), Parkinsonian dementia (21 patients) and subjective memory problems (90 patients). No trials reported any clear clinical benefit of lecithin for Alzheimer's disease or Parkinsonian dementia. Few trials contributed data to meta-analyses. The only statistically significant result was in favur of placebo for adverse events, based on one trial, which appears likely to be a spurious result. A dramatic result in favour of lecithin was obtained in a trial of subjects with subjective memory problems. REVIEWER'S CONCLUSIONS: Evidence from randomized trials does not support the use of lecithin - phosphatidylcholine -  in the treatment of patients with dementia. A moderate effect cannot be ruled out, but results from the small trials to date do not indicate priority for a large randomized trial.

Phosphatidylcholine questions
Q. Is alpha gpc similar to phosphatidylcholine?
   A. See the link above for more information.

Q.  I have been told that I am deficient in acetylcholine. After conducting some research, I have found that Phosphatidylcholine requires Vitamin B5 to assist in the synthesizing process that eventually boost Acetylcholine. Additionally, I would like to know if this is true, would it be better to take a Vitamin B complex? What kind of dosage would you suggest.
   A.  Each person has a different diet and different nutritional requirement, therefore no blanket statements can be made regarding how much or whether to supplement with B5. As a rule, though, one or two times the RDA for the B vitamins is fine for most people.