This invention provides a medicament having a sufficient structural strength to penetrate a patient's skin for administration of a medicament parenterally to the patient without the use of a needle. The medicament may be one having a diameter of from about 0.20 to about 0.80 mm and a length of from about 1 mm to about 5 cm. The medicament may contain at least about 10% active ingredient and may have a chosen strength of 8 or more lbs./mm2 in the longitudinal direction.