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Abstract

Apparatus for drug administration is provided, including an ingestible capsule, which includes a drug, stored by the capsule, and an environmentally-sensitive mechanism, adapted to change a state thereof responsively to a disposition of the capsule within a gastrointestinal (GI) tract of a subject. The capsule further includes first and second electrodes, and a control component, adapted to facilitate passage of the drug, in response to a change of state of the environmentally-sensitive mechanism, through an epithelial layer of the GI tract by driving the first and second electrodes to apply a series of pulses at a current of less than about 5 mA, at a frequency of between about 12 Hz and about 24 Hz, and with a pulse duration of between about 0.5 milliseconds and about 3 milliseconds.

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First Claim