If attacked with vertigo, bend your head down so it is between the knees, to help the blood into it; do not keep this up if not promptly effective. Cold air, and sprinkling with cold water, often prevents fainting;
If one has fainted, take him into the fresh air and lay him on his back, with feet higher than head (unless the face is flushed or blue). Loosen the clothing. Spatter the face and chest with cold water. Rub limbs toward the heart. Apply ammonia to the nose. When consciousness has returned, give a stimulant, or put the patient to bed and apply heat.
Never raise a fainting person to a sitting posture.