(1)Raw bovine testicles
(2)Crushed honey bees (Apis mellifica)
(3)Belladona (deadly nightshade)
(4)Cadmium
(5)Sulphur
(7)Arsenic
(8)Poison nut (Nux vomica)
(9)Spanish fly (Cantharis)
(10)Venom of bushmaster snake
(11)Nosodes made of diseased or pathological products such as faeces, urinary and respiratory discharges ,blood and tissues of patients
(12) Aconite
(13) Dog milk (Lac canidum)
.............and many more such substances. Of course, it is futile to search for any scientific basis behind drug preparation in homeopathy.