Prunelax Ciruelax is an effective laxative made of natural Senna leaves that relieves occasional constipation and helps maintain bowel regularity. Its formula it's perfectly combined to offer a gentle, predictable and effective solution that works in just 8 to 12 hours, providing overnight relief from constipation. Adults and children 15 years of age and over take 1 to 3 Tablets before bedtime; follow with a glass of water or juice.