Expert Guide: What Time of Day Should I Take Phenylalanine?
                                
                                
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                                    6 min read                                
                            
                                Individuals with the metabolic disorder PKU must strictly control their intake of phenylalanine, as concentrations can become toxic. For most others, knowing *what time of day should I take phenylalanine* is key to optimizing its potential benefits for mood, mental alertness, and pain relief.