Depends what you make it from. If you distill eight litres of wine into about a litre brandy without removing methanol, it has the same amount of methanol than eight litres of wine did. Given the average of 150mg/l of methanol in red wine, this puts it to about 1g of methanol in that amount. That is not healthy, but you need to keep in mind ingestion of alcohol slows down the metabolism of methanol through competition and the methanol will be excreted by your kidneys instead of being metabolized.

So, just like you won't go blind from a bottle of brandy, you won't go blind from distilled wine. However, you're likely to have a serious headache the morning after.

The eastern part of Czechia (Moravia) plus Slovakia will distill anything that grows, too, and methanol poisonings are almost non-existent here. Don't underestimate centuries of tradition and know-how.

The only exception was a methanol affair 15 years ago, but that had nothing to do with home distillation. In that particular case, two bozos inspired by a badly understood Wikipedia article bought and mixed enormous amounts of industrial methanol with ethanol and sold the resulting mixture on the black market, killing dozens of people and triggering a temporary prohibition as the authorities scrambled to find all the poisoned booze.

They are now both serving life.

Not great, but I'm not blind.

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