[6] First-line pharmacological treatments include phosphodiesterase type 5 (PDE5) inhibitors, which are licensed, well-studied medications: Sildenafil (Viagra): Typically effective within 30-60 minutes, lasting 4-6 hours [7] Tadalafil (Cialis): Longer duration of action (up to 36 hours), also available as daily low-dose formulation [8] Vardenafil (Levitra): Similar efficacy to sildenafil with slightly different pharmacokinetics Avanafil (Spedra): Take approximately 30 minutes before sexual activity
Notably, GLP-1RAs benefit pain management through their neuroprotective and metabolic regulatory properties, such as inhibiting inflammation responses and oxidative stress, promoting -endorphin release and modulating several other crucial biological pathways
However, when applied to the eye's surface, N-acetylcarnosine (NAC) penetrates the cornea into the front chamber of the eye (near where the cataract is), where it is metabolized into L-carnosine
More than 60 FDA-approved peptide medications are currently available, including insulin, which has been in use since the 1920s