There is no standardized microdosing schedule, but some individuals report starting at doses as low as 0.05 mg once weekly and gradually increasing in smaller increments over several weeks
K.SongY.TrebnickA.et al (2019)
Certain supplements, for example, can amplify the metabolic effects of GLP-1 medications or worsen their gastrointestinal side effects, potentially leading to dizziness, low blood sugar, nausea, bloating, or digestive discomfort
In addition to those three, Healthline also asked Trent Carter, FNP-BC, CARN-AP, a Nurse Practitioner at Curednation about psyllium husks and berberine, which are being touted online as nonprescription alternatives to GLP-1 weight loss drugs