Be very careful. Usually low T has no discernible cause but sometimes it is caused by a (treatable but potentially very serious) cancer of the pituitary called

Be very careful. Usually low T has no discernible cause but sometimes it is caused by a (treatable but potentially very serious) cancer of the pituitary called a prolactinoma. Testosterone treatment can mask the symptoms until is too late. See an endocrinologist before embarking on these "over the counter" treatments.