The present specification discloses solid solution pharmaceutical compositions comprising therapeutic compound comprising a phytocannabinoid, an endocannabinoid, a synthetic cannabinoid, or a combination thereof, one or more pharmaceutically-acceptable hard fats in an amount of at least 30% by weight of the pharmaceutical composition, and one or more pharmaceutically-acceptable liquid lipids in an amount of less than 45% by weight of the pharmaceutical composition, methods of preparing such pharmaceutical compositions, and methods and uses of treating a chronic inflammation and/or an inflammatory disease in an individual using such pharmaceutical compositions.