Parsley wine has been used to improve blood circulation since medieval times, and it's actually very simple to make. You will need:

10 large sprigs of parsley
1 quart of wine (preferably red, but you can use white)
2 tablespoons of white wine vinegar

Boil these ingredients for 10 minutes, then strain the mixture. Add honey to taste and mix well. Store the wine in dark bottles and take one tablespoon of the wine at least three times a day.