You can get Caprilac (powder especially for goats, I have found it dissolves well and doesn't leave the smeary residue that Lamlac tends to), but it is a bit more pricey than Lamlac. If using lamb milk replacer make it up a bit more dilute than t says for lambs, can be too rich for goat kids otherwise. I have nver used it for kids, just for lambs.
Where in the country are you - goatkeepers nearby with a surplus to sell maybe?