Magnesium is an essential mineral that plays a role in many bodily functions. Herbs are a great way to get magnesium into your diet. Some of the best herbs for providing magnesium include: Chamomile: This herb has been used for centuries to aid with relaxation and sleep, but it is also high in magnesium. Just one teaspoon of chamomile contains 8% of your recommended daily intake of magnesium. Sage: Sage is known for its ability to improve brain function, but it also contains a good amount of magnesium. One teaspoon provides 5% of your daily intake. Parsley: Parsley is often used as a garnish on dishes, but it's also packed with nutrients including magnesium. One teaspoon contains 4% of your daily intake.