Other documented side effects include injection site reactions (redness, itching, or swelling), fatigue, dizziness, headache, and increased heart rate
Singh D, Gupta S, Verma I, Morsy MA, Nair AB, Ahmed AF
Some manufacturers are jumping on the trend
Peptide nasal sprays offer rapid systemic availability, improved bioavailability, and protection from enzymatic degradation
Anatomically, the human nasal cavity is in the space between the base of the skull and the roof of the mouth, below the cribriform plate of the ethmoid bone, which supports it and separates the nasal and cranial cavities [16,19]
Certifications: Look for GMP, ISO, or third-party lab certifications