Parasites can cause dizziness, when they throw off a lot of toxins. Deficiencies can be the cause too. The best thing that I've done is to increase my water intake. If you increase your protein it will help greatly.
As for vertigo, you could try a lymphatic tincture or have someone give you a lymphatic drainage massage. Parasites can invade the lymphatic system, along with the ear canal and cause problems. Not to bore you with my vertigo incident but it cleared up almost immediately with a lymphatic tincture. I also have done ear candeling.
They can also cause headaches, which can be due to liver congestion too. If you do a bit more research, you'll find links to head problems and parasites. A note on this, a good friend of mine told me that her grandmother was the town's medicine woman, who was from Nordic Europe. Whenever she or her cousins complained of headaches, her grandmother started the children on a parasite cleanse. According to my friend, this always seemed to work.