Drotaverine Hydrochloride affects stones by relieving smooth muscle spasms, which relaxes smooth muscles and relieves pain by relieving bile duct spasms caused by stones, among other things. Drotaverine hydrochloride is commonly available in tablets and injections. The effect on stones is that it can relax the smooth muscle spasm caused by stones, such as biliary colic, ureteral spasm, renal colic caused by biliary stones, ureteral stones, renal stones, etc. It can relax the smooth muscle to relieve the symptoms of pain and discomfort. It can also be used in the treatment of dysmenorrhea, uterine rigidity, uterine spasm, and preeclampsia. Adverse reactions to Drotaverine Hydrochloride are rare, such as nausea, headache, palpitations (rapid heartbeat, often accompanied by panic), insomnia. It is contraindicated for those who are allergic to one of the components. Drotaverine hydrochloride should be used with special care in people with low blood pressure. If you have a need for Drotaverine hydrochloride, take it under the supervision of a physician, do not self-medicate, so as not to cause adverse consequences.