This work is an attempt to study the general features of Natrum group of remedies only with the help of repertories. [Kent, Murphy, Synthesis] Repertory is not only useful for repatriation and finding out the similimum but also helpful in the study of materia medica either singly or group wise. 
This study of Natrum group is done by noting down the rubrics, which cover at least three medicines of that group. These rubrics thus collected can be considered as the general feature of this group.

NATRUM GROUP OF MEDICINES

Natrum aceticum.
Natrum aethylosulphuricum.
Natrum arsenicosum.
Natrum benzoicum.
Natrum biboracicum. (Borax)
Natrum bisulphurosum
Natrum bichromicum.
Natrum bicarbonicum.
Natrum boricum.
Natrum bromatum.
Natrum carbonicum.
Natrum cacodylicum.
Natrum causticum.
Natrum chromicum.
Natrum choleinicum.
Natrum citricum.
Natrum cyanatum.
Natrum fluoratum.
Natrum formicum.
Natrum glycocholicum.
Natrum genisatum.
Natrum gluconicum.
Natrum glycerophosphoricum.
Natrum hexamataphosphorium.
Natrum hydroxydum.
Natrum hypochlorosum.
Natrum hypophosphorosum.
Natrum hyposulphurosum.
Natrum iodatum.
Natrum lacticum.
Natrum marinum.
Natrum methylarsenicum.
Natrum methylate.
Natrum metallicum.
Natrum molybdicum.
Natrum metavanadium.
Natrum muriaticum.
Natrum natrosum.
Natrum niccotinicum.
Natrum nitricum.
Natrum nitrosum.
Natrum oleicum.
Natrum oxalaceticum.
Natrum oxydatum.
Natrum permanganicum.
Natrum phosphoricum.
Natrum propionicum.
Natrum salicylicum.
Natrum selenicum.
Natrum silicatum.
Natrum silicofluoricum.
Natrum silicicum.
Natrum stannicum.
Natrum succinicum.
Natrum sulphocarbolicum. (Sulphophenolicum)
Natrum sulphuricum. (Glauber’s salt)
Natrum sulphuratum.
Natrum sulphurosum.
Natrum tartaricum.
Natrum taurocholicum.
Natrum teluricum.
Natrum thiocinaminum cynatum.
Natrum valerianinum.
Natrum vanadicum.    

Sodium found in all body fluids. The adult human body contains about 100 gm of sodium ion. Sodium occurs in many foods, and is also added to food during cooking in the form of sodium chloride.   Sodium is lost from the body through urine and sweat; that which is passed out in urine is regulated by the kidney but that which is lost by sweating is not controlled.
Depletion of sodium chloride causes muscular cramps. The requirement of the sodium chloride depends up on climate, occupation and physical activity. The adult requirement is about 10 to 15gm. People engaged in hard work would need more.

General Features
MENTAL FEATURES: 
1.Dullness, sluggishness, difficult in thinking and comprehending.
Nat. ars. Nat phos
Nat. carb      Nat. sulph.
Nat mur
 Ø   Memory weakness of
Nat ars Nat sal
Nat carb Nat sil                      
Nat mur Nat phos
 Ø Prostration of mind
Nat carb Nat mur
Nat ars Nat phos
 Ø   Imbecility
Nat carb Nat ars
Nat mur Nat iodatum
Nat phos Nat sil
 Ø   Concentration difficult
Nat ars Nat carb
Nat phos Nat mur

2. Sensitive, over sensitive
Nat mur Nat ars
Nat carb, Nat phos
Nat sulph
 Ø  Music to
Nat carb Nat sulph
Nat phos Nat mur  
Ø  Noise to
Nat carb Nat ars
Nat mur Nat phos
Nat sulph Nat si 
3. Starting, Startled
Nat ars Nat carb
Nat mur Nat phos  
Ø Starting -- Easily
Nat carb
Nat mur
Nat phos
Ø Fright from
Nat carb Nat ars
Nat mur Nat phos
Nat sulph Nat sil 
Ø Noise from
Nat carb,  Nat ars
Nat mur Nat sil
Nat phos Nat sulph 
Natrum group remedies has startle ness from noise. It may be due to acuteness of hearing.
 Ø Hearing acute
Nat carb Nat ars
Nat mur   Nat phos
Noise to
Nat ars
Nat carb
Nat phos
Nat sulph
4. Fear, phobias, general
Nat carb Nat ars
Nat sulph       Nat mur
Nat phos 
Ø  Crowd in a
Nat mur Nat ars
Nat carb Nat sulph
Ø  Disease of impending
Nat ars Nat carb
Nat mur Nat phos
Ø  Evil of
Nat carb Nat ars
Nat mur Nat sulph
>  Happen something will
 Nat mur Nat ars
Nat phos
Ø Misfortune of Nat carb Nat mur
Nat phos Nat sulph 
Ø People of
Nat carb Nat ars
Nat sulph Nat mur  
Ø Robbers of
Nat mur Nat carb                 
Ø Thunder storm of  
Nat carb
Nat mur
 5. Weeping, tearful mood Crying, weeping.
 Nat mur Nat phos
Nat ars Nat sulph
Nat carb Nat sil
 Ø Sadness and mental depression
Nat ars               Nat phos Nat brom
Nat carb Nat fluor Nat sulph Nat h hchls
Nat nit Nat sal
6. Hysteria
Nat mur Nat carb Nat ars
Nat hchls Nat phos Nat sil
Nat sulph
 7. Anxiety -- general
(Anxiety more towards evening & night)
Nat ars Nat phos Nat carb  
Nat mur Nat sulph
Ø Anxiety fear with
Nat mur Nat ars
Nat carb Nat phos
Ø Future about
 Nat carb Nat ac
Nat mur Nat ars
Nat phos Nat sulph
 Ø Hypochondriacal anxiety
Nat mur Nat carb
 Ø Menses during
Nat mur Nat carb
 Ø Waking on
Nat sulph Nat ars
Nat carb Nat mur .Nat phos
8. Indolence and aversion to work
 (Laziness, indolence) 
Nat mur Nat ars
Nat carb Nat h
Nat nit Nat phos
Nat sulph .  Nat sil
9. Loathing of life
Nat mur Nat sulph Nat ars
Nat carb Nat sil
Ø Death desires
Nat mur Nat carb
Nat sulph
10.Talk- indisposed to (desire to be silent)
Taciturn
Nat mur Nat ars
Nat sul Nat carb
Nat phos Nat sil
11.Indifference
Nat carb Nat ars
Nat mur Nat phos 
Ø Pleasure to 
Nat mur           Nat ars
Nat carb 
Ø Every thing 
Nat mur Nat carb
Nat phos 
12. Timidity
Nat carb Nat ars Nat phos
Nat mur 
13. Company- general aversion to
Nat mur Nat carb
Nat phos Nat sulp
 Ø  When alone
Nat carb
Nat mur
Ø Aversion to husband
Nat carb      Nat. mur 
Ø Aversion to members of family 
Nat carb Nat mur 
14.Easily angered, irritable and quarrelsome 
Ø Anger general 
Nat mur Nat carb
Nat ars Nat sulph
Nat phos 
Ø  Irritability
Nat carb Nat sulph
Nat ars Nat mur
Nat phos 
Ø  Quarrelsome
Nat carb Nat sulph
Nat mur Nat sulph 
15. Discontented
Nat mur Nat carb
Nat ars Nat phos
16. Hurried feeling 
Nat mur Nat ars
Nat carb Nat phos
@ Impatience  
Nat mur Nat ars
Nat carb
Nat phos
17. Confusion mental 
Nat mur Nat carb Natars
Nat phos      Nat sulph 
* Eating after
Nat mur.   Nat phos
Nat carb
Nat sil  
* Injury to head after
Nat sulph
* Stupefaction
Nat h            Nat carb
Nat mur Nat phos
Nat sulph  
18. Restlessness (especially during night)
Nat mur Nat sulph
   Nat ars Nat fluor
Nat carb Nat phos
* Anxious  
Nat ars Nat mur Nat phos
Nat carb                                         Nat sil
* Restlessness - anxious, night  
Nat ars Nat carb Nat mur
Nat sulph          Nat phos Nat sil
19. Ailments after anger
Nat mur Nat ars                                                          
Nat carb Nat phos
Nat sulph
* With silent grief
Nat mur Nat carb  
20. Exertion mental aggravation
Nat carb Nat ars
Nat mur Nat sulph
Nat sil
21. Excitement, easily excitable
Nat mur Nat carb Nat ars
Nat phos Nat sulph Nat sil  
22. Discouraged feeling  
Nat ars Nat carb Nat mur
Nat phos Nat sulph Nat sil  
23. Estranged, feels, from her family
Nat carb Nat sulph
Nat mur
24. Dreams
· Amorous / sexual  
Nat carb Nat mur Nat ars
Nat phos
· Anxious  
Nat carb Nat ars Nat phos
Nat mur Nat sulph  
. Fire 
Nat mur Nat carb
Nat phos Nat sulph
· Pleasant  
Nat carb Nat mur          Nat ars
Nat phos Nat sulph
· Frightful 
Nat mur Nat ars
Nat carb Nat phos
Nat sulph  

PHYSICAL FEATURES
 1. Weak, anaemic and emaciated constitution 
· Anaemia  
Nat mur Nat sulph Nat ars
Nat carb Nat nit Nat phos  
Ø Haemorrhage anaemia after
Nat mur Nat brom
Ø Heamolytic chlorosis  
Nat mur Nat carb Nat hchls
Nat phos                   
Ø Weakness
Nat mur Nat carb Nat ars
Nat h Nat n      Nat phos
Nat sulph  
Ø Emaciation general
Nat h Nat ars
Nat mur Nat carb
Nat phos Nat sulph  
2. Cold tendency to take
Nat ars Nat carb Nat phos
Nat mur
3. Exertion physical aggravation
Nat ars Nat phos
Nat carb Nat mur
4. Milk aggravation
Nat carb Nat ars
Nat mur Nat phos
Nat sulph
Ø  Stomach disordered milk after
Nat carb    Nat ars
Nat phos
5. Sleep -- insomnia esp after midnight            
 > Insomnia  
Nat carb              Nat ars Nat mur
Nat phos            Nat sulph
Ø Night - midnight after  
Nat ars Nat mur Nat carb
Nat phos     
Ø Restless sleep
Nat ars Nat phos Nat carb
Nat mur        Nat sulph   
6. Miasm -- predominantly sycotic and tubercular  
Ø Sycotic
Nat sulph Nat phos  
Ø Tubercular
Nat sulph Nat mur 
Ø Scrofulous (tubercular tendency)
Nat carb Nat phos
Nat mur  
7. Many of the drugs of Natrum are anti leukaemic. 
Ø Leukaemia
 Nat ars Nat mur
Nat sulph Nat phos
Ø Acute leukaemia
Nat mur 
Ø Lymphoid   
Nat ars Nat mur
Ø Spleen involvement
Nat mur Nat sulph       8. Natrum pains are stitching in nature
Ø Generalities pain stitching externally
Nat carb Nat ars
Nat h Nat mur
Nat phos     Nat sulph  
Ø Internally
Nat carb Nat ars
Nat mur Nat sulph
Ø Pain ear stitching  
Nat ars Nat carb
Nat mur Nat phos 
> Extremities pain stitching
Nat h Nat phos
Nat sulph
Ø Throat stitching
Nat carb Nat ars
Nat mur Nat phos
9. Bread aversion
Nat mur Nat phos
Nat sulph  
10. Meat aversion
Nat mur Nat ars
Nat carb Nat phos
Nat sulph 
 11. Milk aversion
Nat carb Nat mur
Nat phos Nat sulph  
12. Desires beer 
Nat carb Nat ars
Nat mur Nat phos
Nat sulph 
13. Desires sweets
Nat carb Nat ars
Nat mur 
14. Sexual passion increased in both sexes 
Ø Male sexual desire increased
Nat carb Nat h
Nat mur Nat phos
Nat sulph 
Ø Female sexual desire increased 
Nat ars Nat mur
Nat carb Nat phos
Nat sil 
15. All types of menstrual irregularities 
Ø Frequent, too early, too soon
Nat mur Nat carb Nat phos
Nat h Nat sil Nat ars 
Ø Late 
Nat mur Nat phos Nat carb
Nat sulph 
Ø Protracted 
 Nat mur Nat ars Nat carb
 Nat phos Nat sulp 
Ø Scanty 
Nat mur Nat ars Nat sulph
Nat carb Nat sil 
Ø Metrorrhagia 
Nat h Nat mur Nat carb
Nat ars
16. Sterility
Nat carb Nat phos Nat mur
17..Dryness both internally and externally 
Ø Dryness mouth
Nat ars Nat phos
Nat carb  Nat sulph
Nat mur
Ø Dryness throat 
Nat ars Nat carb
Nat mur Nat phos
Nat sulph
Ø Dryness eyes 
  Nat mur Nat sulph Nat ars
Nat carb         Nat mur  Nat phos 
Ø Dryness rectum 
Nat mur 
Ø Dryness tongue
Nat ars Nat carb Nat mur 
Ø Dryness oesophagus 
Nat mur 
Ø Dryness skin
Nat mur Nat ars Nat phos
Nat carb 
Ø Skin dry perspire inability to 
Nat mur Nat carb 
Ø Cough dry 
Nat ars Nat carb Nat phos
Nat mur Nat sulph 
18. Constipation alternate with diarrhoea
Nat mur Nat ars Nat sulph Nat carb Nat phos 
19.Heat flushes 
Nat sulph Nat ars Nat carb
Nat mur Nat phos 
20. Natrum group of medicines have got special affinity for Skin affection, that too, more on the face.

Ø Eruption face 
Nat mur Nat carb Nat phos
Nat ars 
Ø Chin  
Nat mur Nat carb Nat phos
Nat sulph
Ø Forehead 
Nat mur Nat ars Nat carb
Nat phos 
Ø Lips 
Nat mur Nat carb Nat ars
Nat phos Nat sulph 
Ø Mouth around  
Nat ars Nat phos Nat carb
Nat sulph Nat mur 
Ø Nose 
Nat carb        Nat ars        Nat phos
Nat mur 
21. Vertigo with tendency to fall  
Nat mur Nat ars Nat carb
Nat h    Nat phos Nat sulph 
Ø Forward 
Nat mur 
Ø Right 
Nat sulph 
Ø Left 
Nat carb and Nat mur. 
Ø Mental exertion after 
Nat carb Nat phos Nat mur 
22. Coition after aggravation 
Nat carb Nat mur Nat phos 

23.This group of medicines has marked action in eye affection
> Inflammation 
Nat mur Nat sulph Nat carb
Nat phos 
Ø Conjuctiva 
Nat ars Nat phos
Nat phos
Lids
Ø Itching 
Ø Paralysis of muscles of eye ball
Nat mur 
v Internal recti  
Nat mur 
v Ciliary muscles  
Nat mur
> Paralysis of optic nerve 
Nat mur Nat ars
Nat carb Nat phos 
Ø Photophobia  
Nat mur Nat ars Nat phos
Nat sulph        Nat carb  
Ø Strabismus 
Nat mur Nat ars Nat phos  
Ø Swollen lids
Nat ars Nat mur Nat phos
Nat carb               Nat sulph  
Ø Ulceration
Nat carb Nat ars
Nat mur 
24.. Weakness of ankles
Nat ars Nat carb Nat mur
Nat phos Nat sulph 
25. Warts
Ø Skin warts                            
Nat carb Nat mur Nat phos
Nat sulph 
Ø Extremities warts hands  
Nat carb Nat mur Nat sulph