Anyone else? Those who enjoy drinks

J

So I often (2x per week)d rink soda with juice and bitters.

For example, citrus bitters and La Croix because it helps with my leg cramps. Sometimes I add vodka or whatever to make it a cocktail but when I do, I swear it makes the alcohol stronger. So, I would get tipsy after 2 drinks instead of 3-4 without bitters .

Anyone experienced this? Do bitters have a synergistic effect with alcohol???