Calimvet’s active ingredient is acepromazine, a powerful sedative and it has got side effects like sedation, wobbly walking, sleeping, droopy red eyelids etc. Seriously, don’t worry, she will be fine once the drug wears off ( may in 6–10 hours). It is best to place her in a safe place, where she can’t fall and injure herself. I too would recommend not giving dogs tranquilizers. Meanwhile you can consult your vet for details.