Please choose the correct ending to complete the given sentence: Health: [header] How to take iodine [title] Choose an iodine supplement of 0.5 milligrams or less. [step] If you think you aren't getting enough iodine and you don't want to visit the doctor, take a low dose of iodine. You shouldn't take more than 0.5 milligrams a day, as too much iodine can wreak havoc on your thyroid gland.

Ending1: [substeps] Note that iodine supplements may decrease stomach acid by 100 to 1500 milligrams a day. [title] Choose a blend of iodine supplements at most prescription and over-the-counter. Ending2: [title] Consume 50 milligrams of iodine daily. [step] Only add iodine to your daily beverage if the dosages are 100 milligrams or less. Ending3: [substeps] Before starting iodine supplements, talk to your doctor about getting a blood test. This is the only way to confirm that your iodine levels are low. Ending4: [substeps] Gently mix iodine supplements with one to two cups of water. Mix them with a few drops of water.

Answer format: ending1/ending2/ending3/ending4