 The efficacy of lanreotide has not been extensively studied, and results differ greatly between trials and formulations.Lanreotide is used in the treatment of acromegaly, due to both pituitary and non-pituitary growth hormone-secreting tumors, and the management of symptoms caused by neuroendocrine tumors, particularly carcinoid tumors and VIPomas.In the United States and Canada, lanreotide is only indicated for the treatment of acromegaly.