The homeopathic remedy Crotalus Horridus is for lightheadedness, fever, vomiting. Modalities:: WORSE morning on waking or wake the patient up in the night; lying on right side; falling asleep; jarring; open air; evening and morning in spring; coming on of warm weather. Cold air aggravates the throat and respiratory symptoms. Dry air aggravates cough. BETTER from rest and motion; light; head and stomach symptoms better open air. Source: Robin Murphy Lotus Materia Medica
You can find Crotalus Horridus Pills at Remedy Source.