Sustained-release formulation composition

A pharmaceutical composition, comprising the following components:

• a. a liquid oil
• b. a pharmaceutically acceptable gelator, selected from one or more of fatty acid glycerides of formula I:
• wherein R′ and R″ may be identical or different and are each independently selected from H or RaCO, and R′″ is selected from RaCO;
• each Ra is independently selected from saturated or unsaturated aliphatic hydrocarbyl;
• c. a pharmaceutically acceptable stabilizer, selected from one or more of compounds of formula II or formula III:
• the compound of formula II being
• wherein Rs is selected from H,
• R1 and R2 are identical or different and are each independently selected from saturated or unsaturated aliphatic hydrocarbyl;
• R3, R4 and R5 are identical or different and are each independently selected from H or alkyl;
• L is selected from alkylene;
• the compound of formula III being
• wherein R is selected from alkyl;
• and
• d. at least one pharmaceutically active ingredient.