overall length of about 0 46 inch and overall height of about 0 16 inch and overall width of about 0 23 inch the rupturable layer 32 is made of foil and has a thickness of about 0 0015 inch the nonrupturable layer 30 is made of a laminate of foil paperboard and polyester with an overall thickness of about 0 004 inch referring to fig5 through 8 an alternative preferred dual chamber child resistant blister package 120 of the present invention is illustrated the blister 122 of this package 120 includes two semi spherical projections 138 which protrude inwardly into the blister 122 separating the storage chamber 134 from the discharge chamber 136 which operates as restraint means for preventing the medicament 124 from moving from the storage chamber 134 to the discharge chamber 136 until a predetermined force is applied to the blister package 120 as described below the distal end of the storage chamber 134 of the blister 122 includes a sloped wall 140 the discharge chamber 136 is elongated which helps improve child resistance as described below the rupturable means and the nonrupturable means of this embodiment are similar to those of the previous embodiment i e a rupturable layer 132 and a nonrupturable layer 130 the rupturable layer 132 is located immediately adjacent the blister layer 128 sealing the medicament 124 within the blister 122 and sealing the opening 144 of the nonrupturable layer 130 the nonrupturable layer 130 is located adjacent the storage chamber 134 preventing a medicament 124 located within the storage chamber 134 from being discharged from the storage chamber 134 through the nonrupturable layer 130 the nonrupturable layer 130 includes an opening 144 located adjacent the distal.