There are plants that can improve circulation in the small blood vessels, such as ginkgo biloba. This can be used as a dry extract of 60mg, twice a day, combined with selenium, which is an antioxidant.
In addition, to thin the blood, citron essential oil can be used, or lemon tree essential oil. White willow herbal tea, which is full of salicylates and was widely used by the Arabs before they knew of aspirin, is a good anti-inflammatory.
It should be consumed twice a day with meals. It is also recommended to use ointments based on red vine, especially if the condition affects the fingertips.
In addition, exposure to cold should be avoided, and the limbs should always be kept warm; for this, the Arabs use the hammam or the sauna.
What the science says: circulation and heavy legs
What published research says about the remedies mentioned above, for context — the studies address material causes, healing belongs to Allah.
Circulation and heavy legs
Horse chestnut extract relieves chronic venous insufficiency according to a Cochrane review (Glob Adv Health Med, 2012); red vine, witch hazel, cypress, and fiber (for hemorrhoids) are the classic remedies, along with walking, elevating the legs, and cool water. Precaution: a leg that suddenly becomes swollen, warm, and painful may indicate phlebitis — an emergency; hemorrhoids that bleed regularly deserve an examination.