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What is Sodium Deficiency?

Sodium deficiency, also known as hyponatraemia, indicates reduced levels of sodium in the blood compared to the normal. It occurs when the sodium levels are lower than 135-145 milliequivalents/litre. Sodium is one of the major and essential electrolytes of the extracellular fluid and helps in the maintenance of the fluid-electrolyte balance.

What are the main signs and symptoms?

Symptoms become less evident when sodium deficiency is mild. As the severity of the condition increases, the following are noted

What are the main causes?

It is found that large amounts of water in the body decrease sodium levels. Low levels of sodium may be attributed to the loss of either sodium alone or with water from the body.

Some other reasons include

  • Inadequate functioning of the kidneys
  • Fluid build-up in the body
  • Use of medications that cause sodium loss
  • Depression or pain medications that increase urine output
  • Excessive vomiting and loose stools
  • Increased thirst

How is it diagnosed and treated?

Your physician may order certain tests to observe the levels of sodium in body fluids. Physical examination will be carried out as an initial assessment. Symptoms may be questioned to rule out other conditions. Body fluids, such as blood and urine, will be analysed for the levels of sodium. The tests given below may be performed

  • Serum sodium
  • Osmolality test
  • Sodium in urine
  • Urine osmolality

Usually, treatment is given as per the cause and severity of the condition. The main treatment approaches include

  • Intravenous fluids
  • Medicines for symptomatic relief
  • Reduction in water consumption

There are some drugs that increase sodium levels, but caution must be taken while using them. Other methods involve drinking electrolytes to correct sodium and salt levels. If there is kidney failure, dialysis may be beneficial to remove excess water.

Sodium deficiency may be corrected and is not a chronic condition, provided your vital organs are not compromised.


  1. Medicines for Sodium deficiency
  2. Doctors for Sodium deficiency
Dr. Tanmay Bharani

Dr. Tanmay Bharani

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Dr. Sunil Kumar Mishra

Dr. Sunil Kumar Mishra

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Dr. Parjeet Kaur

Dr. Parjeet Kaur

एंडोक्राइन ग्रंथियों और होर्मोनेस सम्बन्धी विज्ञान

Medicines for Sodium deficiency

Medicines listed below are available for Sodium deficiency. Please note that you should not take any medicines without doctor consultation. Taking any medicine without doctor's consultation can cause serious problems.

Medicine NamePack SizePrice (Rs.)
RenolenRenolen Eye Drop53
HyprosolHyprosol 0.490 W/V/2 W/V Prefilled Syringe88
HysolHysol Eye Drop36
D.N.SDns Infusion38
Dns (Baxter)Dns 5 G/0.45 G Infusion24
Dns (Parenteral Drug)Dns 5%W/V/0.9%W/V Infusion20
Dns (Denis)Dns Infusion36
GrelyteGrelyte Solution25
Sodium Chloride (Albert)Sodium Chloride Solution23
TnaTna Peri Infusion1469
Leclyte G PlLeclyte G Pl Solution35
CatlonCatlon Drop54
SterofundinSterofundin Iso Infusion180
N.S (Parenteral)N.S Infusion18
RallidexRallidex Infusion337
Dextrose With Normal SalineDextrose With Normal Saline 5% Infusion17
Dns (Venus)Dns Solution36
Dns Water (Albert)Dns Water 0.9% W/V Infusion23

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  1. MedlinePlus Medical Encyclopedia: US National Library of Medicine; Low sodium level
  2. Michael M. Braun et al. Diagnosis and Management of Sodium Disorders: Hyponatremia and Hypernatremia. Am Fam Physician. 2015 Mar 1;91(5):299-307. American Academy of Family Physicians.
  3. Oregon State University. [Internet] Corvallis, Oregon; Sodium (Chloride)
  4. National Kidney Foundation [Internet] New York; Hyponatremia
  5. Harvard School of Public Health. The Nutrition Source. The President and Fellows of Harvard College [Internet]
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