Patent ID: 7651974

Claim:
An adsorbent for oral administration, comprising a spherical activated carbon, wherein a diameter is 0.01 to 1 mm, a specific surface area determined by Langmuir's adsorption equation is 1000 m 2 /g or more, and a diffraction intensity ratio, an R value, determined by an equation (1): R =( I 15 −I 35 )/( I 24 −I 35 ) (1) wherein I 15 is a diffraction intensity when a diffraction angle (2θ) of an X-ray diffractometry is 15°, I 35 is a diffraction intensity when a diffraction angle (2θ) of an X-ray diffractometry is 35°, and I 24 is a diffraction intensity when a diffraction angle (2θ) of an X-ray diffractometry is 24°, is 1.4 or more.