III. Characteristics
- Conditions associated with High Progestin Activity
- Increased Appetite
- Major Depression
- Conditions associated with Low Progestin Activity
- Mid-cycle spotting (days 10-21)
- Heavy Menses
- Dysmenorrhea
IV. Preparations: Progestins with most potent Progestational Activity
- Progestin Activity based on Norethindrone mg/day
- Gestodene (12.6)
- Desogestrel (9.0)
- Levonorgestrel (5.3)
- dl-Norgestrel (2.6)
- Norethindrone (1.0) - Low reference
V. Preparations: Oral Contraceptive Progestin Activity (low to high)
- Progestin Activity based on Norethindrone mg/day
- Ortho-Cyclen (Norgestimate): 0.3
- Ortho Tri-Cyclen (Norgestimate): 0.3
- Alesse (Levonorgestrel): 0.5
- Triphasil (Levonorgestrel): 0.5
- Modicon (Norethindrone): 0.5
- Nordette (Levonorgestrel): 0.8
- Lo-Ovral (Norgestrel): 0.8
- Ortho-Novum 777 (Norethindrone): 0.8
- Ortho-Novum 1/35 (Norethindrone): 1.0
- Ortho-Cept or Desogen (Desogestrel): 1.0
- Estrostep (Norethindrone Acetate): 1.2
- Loestrin 1/20 (Norethindrone Acetate): 1.4
- Demulen 1/35 (Ethynodiol Diacetate): 1.4
- Loestrin 1.5/30 (Norethindrone Acetate): 1.7
VI. References
- Cerel-Suhl (1999) Am Fam Physician 60(7):2073 [PubMed]
- Speroff (1993) Obstet Gynecol 81:1034-47 [PubMed]
- Dickey (1998) Managing Contraceptive Pill Patients