Refractory period (sex) for treating sexual dysfunction. Sildenafil, used in the treatment of erectile dysfunction, was found in one scientific study to have caused "a decreased postejaculatory erectile refractory time (3.2 ± 0.7 vs. 6.4 ± 0.7 minutes)" in men diagnosed with premature ejaculation. It is additionally proposed that the gonadotropin inhibitory hormone (GnIH), which is considered to inhibit the hypothalamic-pituitary-gonadal axis and sexual functions causes refractoriness of the post-ejaculatory refractory period. This hypothesis also supports the increase of oxytocin and prolactin after orgasm in accordance with the previous studies. One alternative theory explains the male refractory period in terms of a peripheral
Milk substitute are often coconut milk or plant cream, due to the higher fat and lower water content preventing the formation of ice crystals. Breast milk substitutes are available for infants if breast feeding is not an option. Infant formulas based on cow’s milk, soy or rice can be a supplement to breast milk or a sole source of nutrition before solid food is introduced. Infant formula is usually fortified with dietary nutrients optimised for babies and toddlers, such as iron, to ensure survival, growth and health of the baby. Milk substitute A milk substitute (or, more precisely, an analogue of mammalian