Emergency medical assistance should be sought if you experience any of these signs of an allergic reaction after you order Albenza online: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your local physician straight away if you have any of these serious side effects: easy bruising or bleeding, unusual weakness; fever, sore throat, and headache with a severe blistering, peeling, and red skin rash; or fever with chills, body aches, or flu-like symptoms. Less serious side effects may include: stomach pain; nausea, vomiting; headache, dizziness; or temporary hair loss. This is not a full list of side effects and others may happen.