Phenylmercuric nitrate is an organomercury compound with powerful antiseptic and antifungal effects. It was once commonly used as a topical solution for disinfecting wounds, but as with all organomercury compounds it is highly toxic, especially to the kidneys, and is no longer used in this application.

Phenylmercuric nitrate is classified as an antimicrobial preservative. It is bactericidal against many Gram-positive and Gram-negative species.

1. It is used as antimicrobial preservative mainly in ophthalmic preparations. Patients who used eye drops containing the preservative, phenylmercuric nitrate for from 3 to 15 years, developed a brownish pigmentation of the anterior capsule of the pupillary area. 

2. Phenylmercuric nitrate is also an effective spermicide, although its use in vaginal contraceptives is no longer recommended.

3. Phenyl Mercuric Nitrate is used for the treatment, control, prevention, & improvement of the following diseases, conditions and symptoms:

4. Antiseptic

5. Antibacterial

6. Fungicidal

7. Disinfectant

.

• Before using Phenyl Mercuric Nitrate, inform your doctor about your current list of medications, over the counter products (e.g. vitamins, herbal supplements, etc.), allergies, pre-existing diseases, and current health conditions (e.g. pregnancy, upcoming surgery, etc.).

• Some health conditions may make you more susceptible to the side-effects of the drug. Take as directed by your doctor or follow the direction printed on the product insert.

• Important counseling points are:

• Breastfeeding

• Pregnant