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A local glutamate-glutamine cycle sustains synaptic excitatory transmitter release

So what actually changed

The TRIUMPH-4 Phase 3 trial in obesity with knee osteoarthritis (Bays et al., NEJM 2025) reported 28.7% mean weight loss at 68 weeks at the 12 mg dose, plus a 75.8% reduction in WOMAC knee pain scores

Stress management Chronic stress impairs cognitive function through elevated cortisol and altered prefrontal cortex activity

Approved peptide drugs play a key role in medicine insulin and Ozempic are some of the best known but there is now a growing online market for experimental peptides, which proponents claim can help with everything from muscle repair to slowing the ageing process

Drug confirmation by mass spectrometry: Identification criteria and complicating factors