How does the symptomology of alcohol use change when caffeine is also taken at the same time. Please describe any variances that depend on dosage of each.
Combining alcohol and caffeine can lead to different symptomology compared to consuming alcohol alone. Caffeine can mask some of the sedative effects of alcohol, leading to increased alertness and a decreased perception of intoxication, which can result in drinking more than intended.

At lower doses, the combination may result in increased energy, alertness, and talkativeness, while at higher doses, it may lead to anxiety, tremors, and heart palpitations.

However, it is important to note that combining alcohol and caffeine can also be dangerous, as it can increase the risk of alcohol poisoning, impaired judgment, and other negative consequences. Therefore, it is generally recommended to avoid combining alcohol and caffeine.
What are popular beverages that contain both alcohol and caffeine?
Here are some popular cocktails and mixed drinks that traditionally contain both alcohol and caffeine, such as:

Irish coffee: a cocktail made with hot coffee, Irish whiskey, sugar, and whipped cream.

Espresso martini: a cocktail made with vodka, coffee liqueur, and espresso.

Red Bull and vodka: a popular mixed drink that combines vodka and the energy drink Red Bull.

It's important to remember that consuming these types of drinks can be risky and should be done in moderation. It's generally recommended to consume alcohol and caffeine separately to avoid potential health risks.