If you are experiencing a medical emergency please dial 911 immediately
Pronunciation: meth OX a len
Brand: 8-Mop, Oxsoralen-Ultra
You should not use this medication if you are allergic to methoxsalen, if you have a condition that makes you more sensitive to light (lupus, porphyria, albinism, and others), or if you have a history of skin cancer or damage to the lenses of your eyes due to surgery, injury, or genetic condition.
Before taking methoxsalen, tell your doctor if you have heart disease, kidney or liver disease, a history of cataracts, a skin pigment disorder, if you are extremely sensitive to sunlight, if you have ever received radiation or x-ray therapy, or if you have recently gained or lost weight.
After taking methoxsalen and receiving UVA treatment, you must protect your eyes and skin from natural sunlight (even sun shining through a window). You may develop cataracts if you do not properly protect your eyes after you are treated with methoxsalen and UVA treatment.
Call your doctor at once if you have severe skin redness within 24 hours after UVA treatment, or if you have any severe effects on your skin such as swelling, itching, discomfort, blisters, or severe rash.
There are many other drugs that can interact with methoxsalen, including drugs applied to the skin. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Methoxsalen is a naturally occurring substance that is reactive to light. It works by enhancing the body's sensitivity to ultraviolet light A (UVA).
Methoxsalen is used in combination with UVA light therapy to treat severe psoriasis.
Methoxsalen is usually given after other psoriasis medications have been tried without successful treatment of symptoms.
Methoxsalen may also be used for purposes not listed in this medication guide.
You should not use this medication if you are allergic to methoxsalen, or if you have:
Before your UVA treatment: Do not expose your skin to sunlight for at least 24 hours before you take methoxsalen. Avoid applying sunscreen to areas of psoriasis that will be treated with UVA therapy.
You may need to have your eyes examined before you start taking methoxsalen.
To make sure you can safely take methoxsalen, tell your doctor if you have any of these other conditions:
FDA pregnancy category C. It is not known whether methoxsalen will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
It is not known whether methoxsalen passes into breast milk or if it could harm a nursing baby. You should not breast-feed while you are using methoxsalen.
Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label. Taking too much methoxsalen can cause your skin to be overly sensitive to light, and severe sunburn may result.
Take this medication with low-fat food or milk if it upsets your stomach.
The methoxsalen soft gelatin capsule is more easily absorbed in the body than the hard gelatin capsule. For this reason, you may be sensitive to UVA treatment more quickly after taking the soft gelatin capsule.
Methoxsalen is usually taken 90 minutes to 2 hours before you are scheduled to receive UVA treatment. The timing of your medication may depend on whether you are taking the soft gelatin capsule or the hard gelatin capsule. You may need to keep taking methoxsalen once every other day after your UVA treatment.
Methoxsalen will make your skin more sensitive to sunlight and sunburn may result, which could interfere with your psoriasis treatment.
For at least 8 hours after you take methoxsalen:
For 24 to 48 hours after you receive UVA treatment:
You may develop cataracts if you do not properly protect your eyes after you are treated with methoxsalen and UVA treatment.
Follow your doctor's instructions about applying topical psoriasis medications or any moisturizing lotions after your methoxsalen and UVA treatment.
While taking methoxsalen, check your skin regularly for signs of skin cancer, such as a small growth or nodule, a scaly or crusted lesion, a brownish spot or speckles, or a change in the size, color, or feel of a mole. After receiving UVA treatments, you may need to check your skin for signs of cancer throughout the rest of your life.
Store at room temperature away from moisture and heat.
Call your doctor for instructions if you miss your methoxsalen dose or forget to take the medicine within 90 minutes to 2 hours before your scheduled UVA treatment.
The timing of when you take methoxsalen is very important in relation to UVA treatment. Therefore, you may need to reschedule your light therapy appointment if you have not taken methoxsalen at the proper time beforehand.
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. You will be extremely sensitive to light after an overdose.
Avoid exposure to sunlight or artificial UV rays other than your scheduled light therapy treatments.
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Methoxsalen is expected to produce skin redness that may not occur until several hours after your UVA treatment. This redness may last for 2 or 3 days. You may also have slight swelling. These are normal effects of the medication and UVA treatment.
Call your doctor at once if you have a serious side effect such as:
Less serious side effects may include:
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Tell your doctor about all medications you use now or have used in the past (including those applied to the skin), especially:
This list is not complete and other drugs may interact with methoxsalen. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
Your doctor or pharmacist can provide more information about methoxsalen.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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