An AeroCapsule contains a lyophilised lattice of aerofoam-7 — a patented organo-silicate compound infused with botanical chlorophyll derivatives that, on contact with gastric acid, releases micro-vacuoles of vacuum-sealed helium equivalent. These vacuoles enter the bloodstream, bind reversibly to haemoglobin, and reduce your effective body density by approximately 0.84 kg/m³ per capsule.
That sounds small. It is not. The average adult becomes neutrally buoyant in sea-level air within ninety seconds of ingestion. You do not float up violently — you simply stop being held down. A breath in, and you rise. A slow exhale, and you settle. Flight, it turns out, was always a matter of breathing.
The effect is fully reversible. After forty-seven minutes the lattice metabolises into inert silica and is excreted harmlessly. No residue, no dependency, no lasting change. Only the memory of having been up there.