Try Vitamin C: "High-dose ascorbic acid increases intercourse frequency and improves mood: a randomized controlled clinical trial" https://pubmed.ncbi.nlm.nih

Try Vitamin C: "High-dose ascorbic acid increases intercourse frequency and improves mood: a randomized controlled clinical trial" https://pubmed.ncbi.nlm.nih.gov/12208645/ https://pubmed.ncbi.nlm.nih.gov/12208645/