Below are links to additional sources of information on premature ejaculation (PE).

On-demand use of tramadol, sildenafil, paroxetine and local anesthetics for the management of premature ejaculation: A randomized placebo-controlled clinical trial: (https://pubmed.ncbi.nlm.nih.gov/26558110/)

Pharmacotherapy of premature ejaculation: a systematic review and network meta-analysis: (https://pubmed.ncbi.nlm.nih.gov/30225547)

Phosphodiesterase Type 5 Inhibitors for Premature Ejaculation: A Systematic Review and meta-analysis: (https://pubmed.ncbi.nlm.nih.gov/28720356)

Efficacy and safety of phosphodiesterase type 5 inhibitors on primary premature ejaculation in men: (https://pubmed.ncbi.nlm.nih.gov/26791333/)