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Generic name: Ammonium lactate topical solution [a-MORE-nium LAK-tate]
Brand names: Amlactin, AmLactin Cerapeutic, AmLactin Foot Cream Therapy, Amlactin Ultra, Geri-Hydrolac,… show all 9 brands
Classification of drugs: Emollients for topical use

What is Geri-Hydrolac?

Ammonium lactate is made up of ammonium hydroxide and lactic acid. Ammonium lactate is a moisturizing agent. Ammonium lactate is used for dry, scaly, and itchy skin. This medication guide does not list all possible uses for ammonium lactate.

Side effects of Geri-Hydrolac

If you experience symptoms indicative of an allergic reaction, such as hives, difficulty breathing or swelling of lips, face, tongue or throat - seek medical assistance immediately!

Geri-Hydrolac can cause serious side effects. If you experience:

  • The application of the medication may cause severe redness and stinging.

Geri-Hydrolac side effects may include:

  • After use, mild skin irritation or dryness may occur.
  • Discoloration or bruising on treated skin.

There may be other side effects.Need medical advice about adverse side effects? For an appointment to speak to someone directly. For advice regarding potential symptoms, reach out directly.The FDA can be contacted at 1-800-FDA-1088 to report side effects.


Please read all instructions provided on your medication label or package carefully, and inform your healthcare provider of all medical conditions, allergies and medicines that affect you.

Before you take this drug

This medication should not be used if you have an allergy to ammonium, mineral oil, or glycerin. People with fair or sensitive skin are more susceptible to skin irritation caused by ammonium lactate. FDA pregnancy class C There is no information on whether Geri-Hydrolac can harm an unborn child. You should tell your doctor if you plan to become pregnant while taking this medication. Ammonium lactate topical does not pass into breast milk. It is also unknown if the product could harm a baby who is nursing. You should tell your doctor if you're breastfeeding a child. Do not administer geri-hydrolac without consulting a doctor.

How to take Geri-Hydrolac?

Ammonium lactate is typically applied twice daily. Use the product exactly as instructed on the label or by your doctor. Use the recommended dose and do not exceed it. Before using the lotion, shake it well. You should wash your hands both before and after using this medication unless it is to treat an infection of the hand. You should not use ammonium lactate on your face without your doctor's permission. If your symptoms don't improve or worsen while taking Geri-Hydrolac, call your doctor. Store away from heat and moisture at room temperature.

What happens if I miss the dose?

As soon as you realize that you have missed a dose, apply it as soon as possible. Wait until your next dose to take the medication, and do not use the missed dose. You should not take extra medicine to compensate for a missed dose.

What happens if I overdose?

Geri-Hydrolac is unlikely to cause an overdose.

What should be avoided?

Do not swallow. Geri-hydrolac should only be used on the skin. Geri-Hydrolac should not be used on wounds, sunburned skin, windburned skin, chapped skin, or dry skin. Rinse thoroughly if any medication enters your eyes, nose or mouth.

Interaction with other drug

Ammonium lactate applied topically is unlikely to be affected by other drugs taken orally or injected. Many drugs interact with each other. Inform all healthcare providers of all medicines you take, including prescription, over-the-counter drugs, vitamins, and herbal remedies.