Guidelines for ATC classification and DDD assignment - WHOCC

G03AD Emergency contraceptives
148
Levonorgestrel products (packages) indicated only for emergency
contraception are classified in G03AD01 .
G03B ANDROGENS
Anabolic steroids, see A14A. Norethandrolone, which has both
anabolic and androgenic effects, is classified in A14A since the anabolic
effect is considered to be the most important effect.
This group comprises male sex hormones. Combined preparations are
included in this group, except combinations with female sex hormones,
which are classified in G03E - Androgens and female sex hormones in
combination.
The group is subdivided according to chemical structure.
The DDDs are based on use in substitution therapy in male hypogonadism.
The DDDs for patches (e.g. testosterone) are given in
amount delivered.
G03BA 3-oxoandrosten (4) derivatives
The DDD for parenteral and oral testosterone is expressed as
declared amount of ester e.g. undecanoate. The DDD for TD and
SL route of administration is expressed as declared amount of
testosterone.
G03BB 5-androstanon (3) derivatives
G03C ESTROGENS
This group comprises estrogens and combinations, except combinations
with
- androgens, see G03E
- progestogens, see G03F
- antiandrogens, see G03HB