Other. Temperate deciduous forests are most notable because they go through four seasons. Leaves change color in autumn, fall off in the winter, and grow back in the spring; this adaptation allows plants to survive cold winters.
1 Although vision problems and loss of sight while taking hydroxychloroquine (Plaquenil) for the treatment of lupus or arthritis are very rare, notify your doctor if you notice any changes in your vision. 2  Your doctor also may suggest regular eye exams while taking this medication.
To prevent malaria in adults traveling to an area of high risk, the recommended dose of Plaquenil is 400 mg once a week (on the exact same day each week), starting two weeks before the anticipated exposure.sually, 5 mg per kg of body weight (about 2.3 mg per pound) once weekly is recommended, not to exceed the normal adult dosage.