Table 1.
List of widely dispensed hormonal contraceptives
| Formulation | Progestin | Progestin mg/day (days dosage) | Ethinyl Estradiol mg/day (days dosage) | Generationc |
|---|---|---|---|---|
| A | levonorgestrel | 0.100 (21) | 0.020 (21) | 2nd |
| B | norethindrone acetate | 1.000 (24) | 0.020 (24) | 2nd |
| C | desogestrel | 0.150 (21) | 0.020 (21) | 3rd |
| 0.010 (5) | ||||
| D | norgestimate | 0.250 (21) | 0.035 (21) | 2nd |
| Ea | norgestimate | 0.180 (7) | 0.025 (21) | 2nd |
| 0.215 (7) | ||||
| 0.250 (7) | ||||
| F | drospirenone | 3.000 (21) | 0.030 (21) | 4th |
| Ga | drospirenone | 3.000 (24) | 0.020 (24) | 4th |
| –b | norethindrone acetate | 1.5 (21) | 0.030 (21) | 2nd |
| –b | norethindrone acetate | 0.350 (continuous) | – | 2nd |
| –b | norgestimate | 0.180 (7) | 0.035 (21) | 2nd |
| 0.215 (7) | ||||
| 0.250 (7) | ||||
| –b | etonogestrel vaginal ring | 0.120 (continuous) | 0.015 (continuous) | |
| –b | desogestrel | 0.150 (21) | 0.030 (21) | 3rd |
a
Not included in UHS list of commonly prescribed contraceptives but included in analysis.
b
Not included in analysis due to lack of pharmacokinetic information in the package inserts.
c
Generation identified based on criteria in Golobof and Kiley [28].