Ammonium Lactate

Ammonium Lactate Brand Names

AL-12 | Amlactin | Amlactin Ultra | Amlactin XL | LAC-cream | Lac-Hydrin | Lac-Hydrin Five | LAC-lotion | Moist Skin

What is Ammonium Lactate

Lac-Hydrin® 12% is a prescription formulation of 12% lactic acid neutralized with ammonium hydroxide (i.e., ammonium lactate); both a cream and a lotion are available as prescription products for the treatment of ichthyosis vulgaris (hyperkeratotic disorder) and mild to severe xerosis (dry skin).

Lac-Hydrin® 12% cream and lotion also contain mineral oil, propylene glycol, glycerin, cetyl alcohol, and other ingredients.

Lac-Hydrin® 5% is a non-prescription, fragrance-free lotion used to relieve dry skin. It contains ammonium lactate, glycerin, petrolatum, cetyl alcohol, urea, and other ingredients.

The lotion formulation of Lac-Hydrin® 12% was approved by the FDA in April 1985; Lac-Hydrin® 12% cream was later approved in August 1996. Generic versions of 12% ammonium lactate cream and lotion are available.

However, Amlactin® is classified as a cosmetic and has not been shown to be bioequivalent or therapeutically equivalent to Lac-Hydrin®.

Therefore, Amlactin® is not an FDA-approved generic substitute for Lac-Hydrin® 12%.


  • ichthyosis
  • xerosis

Side Effects

  1. erythema
  2. exfoliative dermatitis
  3. petechiae
  4. pruritus
  5. skin hyperpigmentation
  6. skin irritation
  7. xerosis

Monitoring Parameters

  • laboratory monitoring not necessary


  • breast-feeding
  • children
  • infants
  • neonates
  • pregnancy
  • skin abrasion
  • sunlight (UV) exposure


There are no drug interactions associated with Ammonium Lactate products.


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