Saffron does not have kidney tonic effect on men. Saffron is called Crocus sativus, saffron, is the flower stigma of saffron in the iris family, is a kind of herb more commonly used in clinical practice, has the effect of activating blood circulation and removing blood stasis (promoting blood circulation and eliminating blood stasis in the body), cooling blood and removing toxins (referring to the treatment of blood-heat and toxins in the body), and relieving depression and tranquillizing the mind. It can be used to treat diseases such as menstrual obstruction, postpartum stagnation, warm poisonous spots (warm and hot poisonous evils invade the body and cause spots and plaques on the skin), melancholy and congestion, palpitation and frenzy, etc. It does not have the effect of tonifying the kidneys for men. Saffron can be directly brewed with boiled water to drink, can also be used with other herbs into the medicine decoction, pregnant women should not use the drug. If you need to take this medicine, please take it under the guidance of a professional physician, not self-medication.