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Description
Effects of l-Theanine on Cognitive Function in Middle-Aged and Older Subjects: A Randomized Placebo-Controlled Study

This is one reason why many peptide protocols do not necessarily require injections directly into painful or damaged tissues
Occasional mild injection-site reactions (redness, itching) may occur with subcutaneous administration
Although supplementation may affect hunger in certain situations, increased appetite is typically due to another cause