How the hell is a 'street cap' a standard unit of measurement, stuff on the street could be a 10% saturated solution or a %100 saturated solution.
No but check out the wikipedia page-
Pedraza et al. (2009) found that repeated administration of GHB to rats for 15 days drastically reduced the number of neurons and non-neuronal cells in the CA1 region of the hippocampus and in the prefrontal cortex. With doses of 10 mg/kg of GHB, they were decreased by 61% in the CA1 region and 32% in the prefrontal cortex, and with 100 mg/kg, they were decreased by 38% and 9%, respectively. It is interesting to note that GHB has biphasic effects on neuronal loss, with lower doses (10 mg/kg) producing the most neurotoxicity, and higher doses (100 mg/kg) producing less.
I think it is absurd to claim ANYTHING is non-neurotoxic, it is just how much neurotoxicity or if those effects are counterbalanced by stronger neuroprotective effects, nmda antagonists can improve working memory and neuron survival rates in hypoxic conditions, but they can also cause olney's lesions.
Everything said so far in support of GHB is heresay.