Homeopathic Remedy
Silicea is derived from flint or quartz hence its grounding properties which strengthen the body and the mind. (Article/video on grounding)
Silicea is also used to treat seasonal conditions such as runny nose alternating with nasal dryness associated with allergies.
Those who benefit most from silicea as a homeopathic medicine are those who often lack stamina, complain of being cold, and often feel lethargic.
Generally, this remedy is helpful for long-term rather than acute complaints.