Y42 "Hormones and their synthetic substitutes and antagonists, not elsewhere classified" ( Search )
- Y420 Glucocorticoids and synthetic analogues ( Search )
- Y421 Thyroid hormones and substitutes ( Search )
- Y422 Antithyroid drugs ( Search )
- Y423 Insulin and oral hypoglycaemic [antidiabetic] drugs ( Search )
- Y424 Oral contraceptives ( Search )
- Y425 Other estrogens and progestogens ( Search )
- Y426 "Antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified" ( Search )
- Y427 Androgens and anabolic congeners ( Search )
- Y428 Other and unspecified hormones and their synthetic substitutes ( Search )
- Y429 Other and unspecified hormone antagonists ( Search )
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