ANSWERS: 1
  • The different colors on a birth control wheel signify the different amounts of hormones in each pill. Each pill in the pack must be taken in a specific order, usually a different color for each separate week. The last week of pills is usually a different color from the rest and that signifies a pill containing an inactive ingredient, which causes a woman to have her menstrual period.

    Source:

    The Tartan: How Things Work: Birth Control Pills

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