Another traveller also wrote of the smaller third store:
I just returned from Lima Peru and man- aged to buy 3 bottles of pentobarbital
sodium, 50ml/6.5gm produced by a company called Montana.
I bought it in Lima, as mentioned in the book near the Estadio Nacional, although not in the Zoofarma because they turned me down, saying they needed a prescrip- tion. But if you stand in front of the Zoofarma, facing it and walk to the left side, around 300 mtrs,you will find a very small veterinario which sold me happily 3 bot- tles exactly the same bottle as showed on page 275 in the book, total cost 105 soles plus 30 soles for the taxi.
I tried several big veterinarios, but they all turned me down, because they wanted a prescription for N, so probably only the small back street shops will sell it in Lima. Hope this is a useful update for the book.
A fourth Agro Veterinaria on the same block that is possibly worth a visit?