Various Iodine Solution Preparation (Aqueous Iodine Solution, Weak Iodine Solution, Strong Iodine Solution & Iodine tincture)-The Pharmapedia


Name of PreparationComposition: I2/KI (%w/v)Use
Weak Iodine Solution IP 1966/BP2% / 2.5 % in purified water (no alcohol)Antiseptic
Aqueous Iodine Solution IP 1966 Note: Also Known as Strong Iodine Solution USP/Lugol’s Solution5%/ 10 % in purified water (no alcohol)Source of Iodine
Strong Iodine Solution IP 196610 %/6% in purified water 10 % & Alcohol (90%) q.s. Antiseptic
Iodine tincture USP2 % / 2.4 % NaI (Use Sod. Iodide in Place of KI) Antiseptic
Various Iodine Solutions
  • Iodine: It is found in Sea-water (traces) & Seaweeds Laminaria digitata.
  • Any preparations which provide free Iodine are bactericidal, fungicidal, amoebicidal & virucidal.

1. Weak lodine Solution B.P./I.P. (1966)

It contains 2.0% w/v of Iodine and 2.5% w/v of Potassium Iodide in purified water. It does not contain any alcohol. Uses : Antiseptic.

2. Aqueous Iodine Solution IP 1966/BP:

 It is also known as (Strong Iodine U.S.P.)/ Lugol’s solution. It does not contain any alcohol. It contains 5.0% w/v of Iodine and 10.0% w/v of Potassium iodide in the purified water. Uses: Source of Iodine.

3. Strong Iodine Solution IP 1966

It contains 10.0% w/v of Iodine and 6% w/v of Potassium Iodide in purified water (10%) & Alcohol 90% in sufficient quantity to produce final solution. Use: Antiseptic

4. Iodine tincture USP

It contains 2.0% w/v of Iodine and 2.4% w/v of Sodium Iodide (NaI) in diluted alcoholic solution.


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