Consistency is the most important factor in seeing any supplement results
If you started at the higher end and experienced problems, reduce to 0.5mg to 1mg daily
PLoS ONE 10(6):e0128605 Young KM, Merson TD, Sotthibundhu A, Coulson EJ, Bartlett PF (2007) p75 Neurotrophin receptor expression defines a population of BDNF-responsive neurogenic precursor cells
Approximately 15% of couples worldwide experience infertility, and 2.5%12% of men of reproductive age are estimated to be infertile, with marked regional variations (Levine et al., 2023)
I particularly like CosRxs new Alpha-Arbutin 2 Discoloration Care Serum, which is packed with derm-approved brighteners
A note on brand pen cartridges: Clear pens let you inspect the cartridge directly