No herb has the power to heal anything nor anyone. If an herb tastes good to one and agrees with one, then one can eat it. If an herb does not taste good to one nor if it does not agree with one, then one should avoid it. Eating herbs that one does not like, will be toxic for one. Applying herb applications to one's skin, is not therapeutic but will be toxic for one.
Herbs are to eaten by one's mouth, if the herbs are palatable.
One eats with one's mouth not with one's skin. No food either is therapeutic for any living being. Only one's living body has the vitality to act and react. Schulze's recommendation to eat garlic for therapeutic effect is incorrect. No living being should eat garlic.