House dust mite allergen extract Sublingual and Provayblue injection

• Generic Name: house dust mite allergen extract
• Dosage Forms: n.a.
• Other Brand Names: Odactra, JointFlex, Original Ointment

Odactra™ is an allergen extract that is used to treat symptoms of allergic rhinitis, with or without conjunctivitis, caused by house dust mites. House dust mite allergen extract contains house dust mite allergen extract from Dermatophagoides farinae and Dermatophagoides pteronyssinus. It works by exposing the patient's immune system to house dust mite allergens to reduce the symptoms of hay fever.

House dust mite allergen extract is available only with your doctor's prescription.

• Generic Name: methylene blue
• Dosage Forms: injection
• Other Brand Names: ProvayBlue, Urolene Blue

Methemoglobin is a form of hemoglobin (HEEM o glo bin). Hemoglobin is a substance in blood that carries oxygen and distributes it to your tissues and organs. However, methemoglobin is not a type of hemoglobin that is useful in carrying oxygen.

Methemoglobin normally exists in small amounts in the blood. However, when methemoglobin levels increase, the blood is less efficient in circulating oxygen. The resulting lack of oxygen throughout the body can cause symptoms such as pale or blue-colored skin.

Methemoglobinemia is a condition in which methemoglobin is present in high levels in the blood. Methemoglobinemia can occur when a person is exposed to certain drugs or chemicals such as nitrites.

Provayblue is used to treat methemoglobinemia. Provayblue works by converting methemoglobin to a more efficient type of hemoglobin to better carry oxygen throughout the body.

Provayblue may also be used for purposes not listed in this medication guide.