A late period can be a symptom of pregnancy, but it can also be caused by several other things, including stress, sickness, the use of specific drugs, lifestyle changes, and several health issues
If a licensed Nexa provider determines you're not eligible for GLP-1 therapy, you receive a full refund before anything ships
But according to a representative for both brands, TFC8 is designed to renew skin and combat existing signs of aging, and TFC5 is a proactive option for younger skin (its described on the DUA site as being tailored for skin with minimal to moderate damage)
36:012058 (2016) Tomitori H, Nakamura M, Sakamoto A, Terui Y, Yoshida M, Igarashi K, Kashiwagi K