The Voice Modulation Pill is a consumable item designed to temporarily alter the user’s voice to resemble that of the opposite biological sex. Each dose consists of two separate pills: one to initiate the voice change, and another to revert it. When the first pill is taken, it triggers a shift in the user’s vocal profile—a male voice becomes feminine, and a female voice becomes masculine. This transformation is purely auditory and has no effect on physical anatomy, emotional state, or cognitive functions. The altered voice remains stable and consistent until actively reversed. To return to the original voice, the user must take the second pill. Importantly, these pills are not linked or serialized in any way. This means that if the second pill is lost, stolen, or destroyed, the user may safely acquire a replacement from any other set and it will function exactly as intended. The system is designed with flexibility in mind, ensuring that the voice alteration can always be reversed without dependence on a specific, matching pair. Taking multiple “first” pills does not stack or extend the effect—it simply sustains the altered voice. Likewise, consuming the “exit” pill without having first taken the “entry” pill produces no result. This makes the system resilient to accidental or out-of-order use. The Voice Modulation Pill offers a seamless and reversible way to change one’s voice, with full compatibility across doses and no degradation of effect over time.