Natrum Carbonicum – The Homeopathic Remedy for Weak Digestion & Sun Sensitivity

• Common Name: Carbonate of Sodium
• Family: Mineral (Sodium salt)
• Source: Trona or naturally occurring soda ash

Sphere of Action

Acts primarily on the nervous system, digestive system, skin, and head.
Especially suited to individuals weakened by mental exertion, heat, grief, or chronic illness.

Constitutional Indications

• Suited to mild, gentle, sad, mentally and physically weak persons
• Children who are mentally dull, slow learners
• Bad effects of grief, overstudy, sun exposure, summer heat, or debility

Mind

• Sadness with inclination to weep silently
• Cannot bear contradiction; easily offended
• Forgetful, confused, sensitive to noise or music
• Depression from exhaustion or sun exposure
• Oversensitive to mental and emotional impressions

Head

• Headaches from sun, reading, mental strain
• Worse from slightest mental effort
• Headache with weakness, buzzing in ears, and heaviness
• Heat stroke or sunstroke headaches
• Vertigo when rising from bed or chair

Mouth & Tongue

• Dry mouth, especially at night
• Blisters on tongue; sore, sensitive mucous membranes
• Taste sour or metallic; aphthae in mouth
• Tongue red, inflamed or cracked

Stomach & Digestion

• Cannot digest milk; causes flatulence and diarrhea
• Sour eructations and heartburn
• Weak digestion; everything turns to gas
• Diarrhea after milk or fruit
• Aversion to starchy food, but desires bread and potatoes

Stool

• Soft stool passed with difficulty
• Diarrhea from milk or exposure to sun
• Constipation with dullness and fatigue

Modalities

Worse From	Better From
Sun, heat, mental exertion, milk	Rest, cold air, open air
Music, noise, emotional stress	Gentle motion, quiet

Sleep

• Sleep disturbed by dreams or noises

• Wakes unrefreshed, feels tired in the morning

• Tendency to sleepwalking (somnambulism)

Skin

• Itching, vesicular eruptions
• Blisters and urticaria from sun or heat
• Skin extremely sensitive to sunlight
• Cracks in skin, especially in winter

Ears

• Noise aggravates all symptoms
• Sensitive to music, bells, or loud talking
• Ears feel stopped or buzzing inside

Heart & Circulation

• Palpitation from the least excitement or emotion
• Worse from heat or exertion
• General physical weakness after sun exposure

Potency & Dosage

• Common potencies: 6C, 30C, 200C
• Chronic cases often require long-term repetition in moderate potency

Keynotes

• Oversensitivity to sun, noise, music, emotional stimuli
• Sun headaches, weak digestion, cannot tolerate milk
• Mental dullness from overwork or heat
• Suited to people physically and emotionally exhausted
• Diarrhea after milk or fruit; aversion to milk

Relationships

Complementary	Similar To	Follows Well After
Natrum mur, Sepia	Silicea, Phosphorus	Sulphur, Nux vomica

One-Line Summary

Natrum Carbonicum is the remedy for mental and physical exhaustion, especially from sun exposure, mental strain, and weak digestion—marked by sensitivity to external impressions.