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Do you absorb sodium through your gums, mouth and throat when gargling and rinsing salt water? Considering the fact that sublingual medication is a very effective way for introducing substances straight into your bloodstream very quickly. 

Below's a link to a study on Pubmed about this issue, but I don't have access. Does anyone here have access?  https://www.ncbi.nlm.nih.gov/m/pubmed/3474267/

  • I gargle with salt water several time every day and a recent blood test showed nothing out-side the normal ranges. – blacksmith37 Nov 1 at 15:14
  • @blacksmith37 did you take the blood test after gargling? – larry909 Nov 1 at 19:28
  • Increasing salt intake doesn't generally raise sodium levels because salt causes increased water retention, which dilutes the sodium and keeps the serum levels unchanged. The best way to raise serum sodium levels is by reducing water intake, not by raising salt intake. – Carey Gregory Nov 1 at 20:43
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    @CareyGregory my mistake. I meant: Would gargling salt water every day increase sodium intake levels? (question edited now). – larry909 Nov 1 at 20:46
  • Better question now. – Carey Gregory Nov 1 at 20:52
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Yes, there is increase in sodium absorption levels after rinsing mouth with salt water. This absorption is through oral mucosal lining. Increase in sodium is very little as compared to the daily requirement of sodium.

In the clinical study (link mentioned in question), 5% saline solution (which contains 855 mEq of sodium) was used. Sodium absorbed by various participants was between 2 to 11 mEq, and the minimum requirement of daily sodium dosage is 44 mEq. So, this will pose little risk on metabolic process. And it is possible that on increasing saline concentration of mouth rinse, sodium absorption may also increase. So, 5% Saline solution is recommended for mouth rinsing.

Via: Image of the research article mentioned in question (unable to upload PDF) enter image description here Earlier in 1950's various researchers have reported the use of sodium salts of various drugs for sublingual absorption.

https://onlinelibrary.wiley.com/doi/pdf/10.1002/jps.3030440710

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