When your body is in a constant state of attack from parasites, it raises your blood pressure and your heart rate. The dizziness is normal when cleansing.
Try this to cleanse your blood:
In 8 ozs of water put 1 tablespoon lemon juice (fresh organic if possible), 1 tsp. apple cider vinegar (again, organic if possible), 1 tablespoon blackstrap molasses (if you can't find blackstrap, regular organic unsulphured molasses is fine) and 1/8 tsp of cayenne pepper. Drink this three times a day with meals. It will affect your colon, so don't drink it unless you have access to a bathroom. This helps me remove a lot of the toxins that are released by the dying parasites, and helps with the dizziness and fatigue.
Plus, virgin coconut oil helps raise your blood rate a little. You can add a tsp. to the above drink. It will give you some energy. Try to work up to 3 tablespoons a day. You can use it to cook or just add it to food or just eat it. It has to be virgin, though. The processed brand you find with the cooking oils has had all its beneficial components removed.
These two additions to my cleansing have helped a lot. I hope they help you. You're welcome to visit my blog to keep up with what I'm doing.