Composure Pro is a clinical strength formula to promote calm behavior in cats and dogs. It's shown to work within 30 minutes and last up to 4 hours. It features a combination of four effective ingredients including, Colostrum Calming Complex, L-Theanine (Suntheanine Brand), Thiamine (Vitamin B1) and L-tryptophan. By providing cognitive and brain function support, Composure Pro helps pets maintain calm behavior without causing drowsiness or unwanted personality changes. This liquid formula offers simple administration with an easy-fill syringe that's perfect for pets that won't take a chew. It can be given on a daily or as-needed basis and it's suitable to increase your pet's dose during times of heightened stress.