Use this medicine only under the direct supervision of your doctor.

After UVA exposure, wash the treated area of skin with soap and water. Then use a sunscreen or wear protective clothing to protect the area.

Dosing

Follow your doctor's directions in using this medicine. The following information includes only the average doses of methoxsalen. If your dose is different, do not change it unless your doctor tells you to do so.

• For topical solution dosage form:
  • For vitiligo:
    • Adults and children 12 years of age and over Apply to the affected area of the skin and allow to dry for one to two minutes, then apply again within two to two and one-half hours before UVA exposure.
    • Children under 12 years of age Use and dose must be determined by your doctor.

Methoxsalen is a very strong medicine that increases the skin's sensitivity to sunlight. In addition to causing serious sunburns if not properly used, it has been reported to increase the chance of skin cancer. Also, like too much sunlight, PUVA can cause premature aging of the skin. Therefore, methoxsalen should be used only as directed and should not be used simply for suntanning. Before using this medicine, be sure that you have discussed its use with your doctor.

In deciding to use a medicine, the risks of using the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For topical methoxsalen, the following should be considered:

Allergies Tell your doctor if you have ever had any unusual or allergic reaction to methoxsalen. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.

Diet Eating certain foods while you are using methoxsalen may increase your skin's sensitivity to sunlight. To help prevent this, avoid eating limes, figs, parsley, parsnips, mustard, carrots, and celery while you are being treated with this medicine.

Pregnancy Studies on effects in pregnancy have not been done in either humans or animals.

Breast-feeding It is not known whether methoxsalen passes into breast milk. Although most medicines pass into breast milk in small amounts, many of them may be used safely while breast-feeding. Mothers who are taking this medicine and who wish to breast-feed should discuss this with their doctor.

Children Studies on this medicine have been done only in adult patients, and there is no specific information comparing use of methoxsalen in children up to 12 years of age with use in other age groups.

Older adults Many medicines have not been studied specifically in older people. Therefore, it may not be known whether they work exactly the same way they do in younger adults or if they cause different side effects or problems in older people. There is no specific information comparing use of topical methoxsalen in the elderly with use in other age groups.

Other medicines Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are using topical methoxsalen, it is especially important that your health care professional know if you are receiving the following:

• Recent treatment with x-rays or cancer medicines or plans to have x-rays in the near future Increases the chance of side effects from treatment with PUVA

• Allergy to sunlight (or family history of) or
• Infection or
• Lupus erythematosus or
• Porphyria or
• Skin cancer (history of) or
• Skin conditions (other) Use of PUVA may make the condition worse

• Heart or blood vessel disease (severe) The heat or prolonged standing associated with each light treatment may make the condition worse