What side effects can this medication cause?

Aminolevulinic acid may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
tingling, stinging, prickling, or burning of lesions during blue light treatment (should get better within 24 hours)
redness, swelling, and scaling of treated actinic keratoses and surrounding skin (should get better within 4 weeks)

• discoloration of the skin
• itching
• bleeding
• blistering
• pus under the skin
• hives

Aminolevulinic acid may cause other side effects. Call your doctor if you have any unusual problems while using this medication.

What should I do if I forget to take a dose? 

If you cannot return to the doctor for blue light treatment 14 to 18 hours after levulinic acid application, call your doctor. Continue to protect treated skin from sunlight or other strong light for at least 40 hours. 

What should I do in case of overdose? 

In case of overdose, call your local poison control center.  If the victim has collapsed or is not breathing, call local emergency services.  Protect skin from sunlight or other strong light for at least 40 hours. 

What other information should I know? 

Keep all appointments with your doctor. 

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.