Continuous use year-round at maintenance doses (0.5mg twice weekly) has been reported in research contexts for up to 24 months without tolerance development or cumulative adverse events beyond those seen in short-term protocols
Jedelsk T, Sedlov M, Lochman J, inalov L, Luhov L, Petivalsk M (2021) Protein S-nitrosation differentially modulates tomato responses to infection by hemi-biotrophic oomycetes of Phytophthora spp
Bhowmik S, Bhowmick S, Maiti K, Chakra A, Shahi P, Jain D, et al
The critical factor is the source
Lastly, get enough protein, especially from tyrosine rich foods, to maintain energy levels and support muscle function
Phentermine, the stimulant component of Qsymia, can increase heart rate and is generally avoided in patients with significant cardiovascular disease