Tribulus (Gokshura in Ayurveda, also known as Cat’s Head or Caltrop) is another herb you can rotate with Ashwagandha. It’s a fruit that is safe at lower dose and improves erectile strength, ejaculation and increases testosterone and desire in young and older adults. It also helps improve fertility. It is also effective and safe for female sexual dysfunction with statisticallt significant increase in desire, arousal, orgasm, satisfaction and lubrication.