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These are only useful in cases of true deficiency, and theres little evidence that they reverse greying in the general population
Starting at 0.25mg weekly for the first four weeks, then increasing to 0.5mg for weeks 5-8, then to 1mg for weeks 9-12, and continuing to step up through 1.7mg and 2.4mg at four-week intervals
Sanyal AJ, Bedossa P, Fraessdorf M, et al
On the contrary, postsynaptic action of NO increases the number of AMPARs, which results in LTP (Malinow and Malenka 2002)
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