While not dangerous, they indicate significant vascular reactivity and suggest the nitric oxide system is responding robustly to the peptide
The good news is that the injections are safe, virtually painless, and have a very minimal possibility of causing side effects
[5] [6] The bioavailability of levothyroxine ranges from 4080% and can be reduced by numerous factors including food (particularly high-fibre foods, soya products, and coffee), medications (especially those affecting gastric pH), and supplements containing calcium, iron, or magnesium
Brandhorst S, Longo VD (2016) Fasting and caloric restriction in cancer prevention and treatment
Cells 13:1001 Bryliski , Kostelecka K, Woliski F et al (2025) Effects of trace elements on endocrine function and pathogenesis of thyroid diseasesa literature review