This is my current natural daily stack I'm using to raise test levels. Only just added the Vit D and Quercetin caps so will get bloods done in 4-6 weeks.
3 Tablespoons Extra Virgin Olive Oil
1.2g NAC with 1g Vit C and Selenium
1000U Vitamin D
3.2g Quercetin (replace with onion juice if your a real man)
Common theme is antioxidants help produce more test and healthy fats of course help convert cholesterol into test (olive oil).
Articles below on each