The Compendium of Kāśyapa 8.3.50

8.3.50

vyādhau mande'nale tīkṣṇe bhaktayormadhya iṣyate
kṣīṇakṣīṇālpaśukrāṇāṃ vājīkaraṇamauṣadham

When the disease is mild and the digestive fire is sharp, [administration] between two meals is desired. / For those whose semen is wasted, depleted, or scanty, an aphrodisiac medicament;