Natrium sulphuricum | Intolerance to Humidity

Natrium sulphuricum | Intolerance to Humidity

“To understand this remedy, we must go back to the moment of birth. At that time, some level of head injury occurs, with cerebral edema (an excess of water, or “humor,” in the brain). Next to develop is our humor, cheerful during nursing, depressed when the breast or the bottle is empty, which gives rise to this relationship between our humor and the degree of extracellular humidity.

Natrum sulphuricum regulates all of these phenomena; when we understand this, we understand its action in problems following head injuries and in troubles brought on by excess humidity.”

Dr. Didier Grandgeorge, The Spirit of Homeopathic Medicines

Latin: Natrium sulphuricum Common: Glauber salt, Sodium sulphate, Sal Mirabile

Affinity: Liver and Gastro-intestinal tract (pancreas and descending colon). Joints. Cerebral meninges. Mucous membranes. Skin.

This article is focused on the ill effects of humidity on certain chronic diseases, and the potential of Natrium sulphuricum for bringing successful cure to these cases.

Natrium sulphuricum is a sycotic polychrest of great value in cases of suppressed gonorrhea, sluggish liver, humid asthma, injuries of head and spine when there are mental symptoms developed post factum, and not only that. However, there might be some difficulties before one understands the central idea of this remedy, because of its wide area of action in the body. The key characteristic to remember is the wet, damp environment. As H. Farrington writes in his ‘Homoeopathy and Homoeopathic Prescription’, if the susceptibility to dampness is absent, then Natrium sulphuricum is not indicated.

Increased humidity plays as a causative factor, or invokes most of the chronic complaints of these individuals back to stage. They feel poor in wet weather, when the air is foggy and there is much water in it; when it rains; in warm wet weather; when a thunderstorm approaches; when the weather changes from dry to wet and from cold to warm. Warm weather also aggravates and that is why the spring is the worst season for Nat-s, because it is damp and it is changing from cold to warm. Another thing is that Nat-s is not tolerating the seaside weather – because it is warm – even hot – and it is damp.

Apart from the weather conditions, the types of living and working conditions invoke pathology of Natrium sulphuricum. Damp houses, ground floor apartments, basements; caves tours, underground and underwater work may provoke manifestation of a disease.

Natrium sulphuricum recovers slowly from every sickness.

After Fall Effects

The remedy affects the head mostly after injuries of brain – falls, accidents or sport trauma – and not only injuries of head bust also of spine. With time people develop post-injury ‘mental effects’. The modern medicine can’t trace depression back to the head injury. But people become ill-humored and are inclined to weep. They acquire laconic, monosyllabic mode of conversation, aversion to answering, gloomy and quarrelsome speaking. The music makes them sad. Suicidal thoughts appear, and satiety of life.

But sometimes the mental symptoms are accompanied and even predominated by a real physical aggravation, as it was in the following case:

I was called to a patient last winter on New Year’s Eve. A 65 year old lady musician had suffered fracture of her first lumbar vertebrae, after taking a bad fall in her home from a chair on a hard floor surface. She suffered really hard time, because of the violent pains in practically every position of the body. The adequate homeopathic treatment made her spine heal, and she was back to work in two months after the trauma.

I had no news from her, and then she contacted me again in May. When the spring came she developed very nasty headaches, and an increase of her eye pressure (she had been diagnosed with glaucoma for about 9 years and was constantly on medications). Her ophthalmologist changed her medications twice to no avail. Eye pressure grew higher, and reading became difficult. The headache and the impaired vision impeded her to work.

Natrium sulphuricum 30C removed the headache completely for a week; and both the lady  and her ophthalmologist were pleasantly surprised by the substantial decrease of the eye pressure from 22 to 16.

Respiratory Disorders

Natrium sulphuricum cures asthma which is developed or maintained by living at the seaside or in damp living environment. The attacks come in the morning, about 5 o’clock. The remedy is strongly indicated in children cases.

In chronic nasal catarrh with dropping in posterior nares; where the mucus is yellowish green and thick and occasionally forms green scaps; again worse in damp weather and in the morning.

Chronic bronchitis and cases of pneumonia, with loose, painful cough and sore pain in chest so the patient must hold his chest with both hands – like Bryonia; but Bryonia cough is dry and patients get aggravated in clear dry weather, the opposite modality compared to Natrium sulphuricum.

Liver and Gastrointestinal Disorders

The liver affection is manifested by stitching pains bellow the right ribs, tension in the region of the liver which becomes worse when patients lie on their left side. They feel dragging in liver and heaviness. The liver is enlarged. There is constant hunger and bilious vomiting. The abdomen is distended and there is audible rolling and rumbling of gas, accompanied by stitching pains in the bowels and sharp colic pains.

Patients are constipated sometimes but more frequently have diarrhea with colic pains and rumbling of gas, yellow or brown discharge which goes out with gushing. The diarrhea appears after rising and moving about in the morning (Bryonia, Sulphur).


Natrium sulphuricum cures chronic arthritis with stiffness and cracking of joints on motion, and aggravation in damp environment and in weather changes from dry to wet. Pains are alleviated by slight motion and change of position – like Rhus toxicodendron. Left side is more affected.

*Bibliography: T.F. Allen, Encyclopedia of Materia Medica; J.H. Clarke, Dictionary of Practical Materia Medica; H. Farrington, Homoeopathy and Homoeopathic Prescription