“Vitamin D and vitamin A can support your libido by raising your testosterone levels. Healthy fats rich in omega 3s can help increase your blood flow, which can help increase libido and feelings of arousal,” says Adams. It’s important to note that these benefits of vitamin D supplements have only been observed in people who are not getting enough vitamin D, though many people don't get enough vitamin D through their diets. Because of this, we generally encourage supplementing with vitamin D whether or not you're looking to raise your libido. We recommend getting your vitamin A from your diet before turning to supplements. But, if you're not getting enough, taking a multivitamin that includes beta carotene, the precursor to vitamin A, may be beneficial. If you don't eat fatty fish a few times a week, you may choose to add a fish oil supplement to increase your omega-3 intake. Here are our recommendations for the best fish oil supplements.