[coldtea]

>Sola dosis facit venenum

Pedantically we might say that, but it's not really true.

Sure, what makes something poisonous/dangerous is the dosage, but the dosage itself depends on more basic characteristics.

It's not like we arbitrarily try high dosages of stuff. We don't go out eating small amounts of cyanide for a reason.

Nice taste facits venenum -- by making us increase the dosage. Think sugar, salt, red meat, etc.

Uplifting side effects facit venenum. Think heroin, alcohol, etc.

Adverse withdrawal effects also facit venenum. Else we could easily quite alcohol, drugs, cigarettes with a little self restraint.