An intravaginal formulation is provided, comprising a carboxylic acid in a n amount of 10-20% w/w of said formulation, an oleaginous base, having melting temperature between 30° C. and 38° C., GnRH or an analog thereof, in an amount equivalent to GnRH amount of between 10 μg and 600 μg. A method of inducing ovulation in a ruminant using the formulation is also provided.
