| Opcon-A, Naphcon-A, Visine-A (U.S.N.L.M.) | ||
|---|---|---|
| Dosing | 1 or 2 drops up to qid. | |
| Chem Specs | typically: naphazoline 0.025%, pheniramine 0.3% | |
| Quantities | 0.5 fl. oz. | |
| Cost | 7.00 | |
| Class | Antihistamine/Decongestant | |
| Action | Vasoconstriction via adrenergic agonist (naphazoline ) Histamine antagonist with anitcholinergic properties (pheniramine). |
|
| Usage | Temporary relief of itching and redness caused by ragweed, pollen, grass, animal dander and hair. |
|
| Chronic use can result in conjunctival inflammation, dry eye, and rebound hyperemia when stopped. |
||
| Contraindications | Narrow angle glaucoma. Hypersensitivity to any of the ingredients. Safety concern with cardiovascular disease, hyperthyroidism, and diabetes. |
|
| Pediatric use | 6 years of age and older | |
| Pregnancy | Category C. No adequate well controlled proof of harm in pregnancy. | |
| Seldom recommended due to the above noted drawbacks. | ||
| BAK preserved | ||