The invention relates to a pharmaceutical composition and oral dosage forms comprisinga bisphosphonate in combination with an enhancer to enhance intestinal deliveryof the bisphosphonate to the underlying circulation. Preferably, the enhanceris a medium chain fatty acid or a medium chain fatty acid derivative having a carbonchain length of from 6 to 20 carbon atoms, and the solid oral dosage form is a controlledrelease dosage form such as a delayed release dosage form.