What special precautions should I follow?  

Before taking acitretin,

• tell your doctor and pharmacist if you are allergic to acitretin, other retinoids such as adapalene (Differen), alitretinoin (Panretin), etretinate (Tegison), isotretinoin (Accutane), tazarotene (Tazorac), tretinoin (Renova, Retin-A, Vesanoid), Vitamin A, or any other medications.
• do not take methotrexate (Rheumatrex, Trexall) or tetracycline antibiotics such as demeclocycline (Declomycin), doxycycline (Doryx, Vibramycin), minocycline (Dynacin, Minocin), and tetracycline (Sumycin) while taking acitretin.
• tell your doctor and pharmacist what other prescription and nonprescription medications, vitamins, nutritional supplements, and herbal products you are taking. Be sure to mention the medications and herbs listed in the IMPORTANT WARNING section and any of the following: glyburide (Diabeta, Glynase, Micronase), other oral retinoids such as isotretinoin (Accutane) and tretinoin (Vesanoid), phenytoin (Dilantin, Phenytek), and vitamin A. Also tell your doctor if you have ever taken etretinate (Tegison). Your doctor may need to change the doses of your medications or monitor you carefully for side effects.
• tell your doctor if you have or have ever had the conditions mentioned in the IMPORTANT WARNING section; if you drink large amounts of alcohol; if you have a family history of high cholesterol or diabetes; if you have or have ever had diabetes, high cholesterol or triglycerides, spinal problems, depression, or stroke or mini-stroke; or if you have or have ever had joint, bone, kidney, or heart disease.
• do not breastfeed while taking acitretin or if you have recently stopped taking acitretin.
• you should know that acitretin may limit your ability to see at night. This problem may begin suddenly at any time during your treatment. Be very careful when driving at night.
• plan to avoid unnecessary or prolonged exposure to sunlight and to wear protective clothing, sunglasses, and sunscreen. Do not use sunlamps while taking acitretin. Acitretin may make your skin sensitive to sunlight.
• if you need to have phototherapy, tell your doctor that you are taking acitretin.
• you should know that acitretin may dry your eyes and make wearing contact lenses uncomfortable during or after treatment. Remove your contact lenses and call your doctor if this happens.

What special dietary instructions should I follow?  

Unless your doctor tells you otherwise, continue your normal diet.

What should I do if I forget a dose?