Tuinal was the brand name of a discontinued combination drug composed of two barbiturate salts (secobarbital sodium and amobarbital sodium) in equal proportions. Tuinal was introduced as a sedative-hypnotic (sleeping pill) medication in the late 1940s by Eli Lilly. It was also used in obstetrics for childbirth. It was produced in brightly colored half-reddish orange and half-turquoise blue gelatin capsule form (bullet-shaped Pulvules) for oral administration. Individual capsules contained 50 mg, 100 mg, or 200 mg of barbiturate salts. The combination of a short-acting barbiturate, Secobarbital, with an intermediate-acting barbiturate, Amobarbital, aimed to provide "a rapid yet prolonged hypnotic action".