Overview of LSD LSD is a powerful hallucinogenic substance that primarily affects serotonin receptors in the brain, leading to alterations in perception, mood, and thought. It's known for its capacity to induce profound changes in consciousness, often described as "tripping." Phases of the LSD Experience Onset Phase (30-60 minutes after ingestion): Physical Sensations: Users may feel slight physiological changes such as dilation of the pupils, increased heart rate, and a sense of energy or restlessness. Initial Visual and Sensory Changes: Colors may become more vivid, patterns may appear in the visual field, and there can be a heightened sensitivity to light and sound. Peak Phase (2-4 hours after ingestion): Intense Visual Distortions: The hallmark of the peak experience includes seeing vivid colors, intricate patterns, and moving geometric shapes. Objects may appear to breathe or undulate, and boundaries between objects can blur. Ego Dissolution: This can range from a mild sense of detachment to a profound loss of the sense of self, where individuals feel a merging with their surroundings or a sense of unity with the universe. Time Distortion: Time may seem to slow down or speed up, leading to a feeling that minutes stretch into hours or that events are happening simultaneously. Synesthesia: A crossing of sensory modalities where sounds might be seen, or colors might be heard. Emotional Amplification: Emotions are often intensified, and users might experience euphoria, awe, or deep introspection. Conversely, negative emotions can also become overwhelming, leading to anxiety or fear.