No, calcium channel blockers work at the level of muscle cells.
Calcium Channel blocker have a long half life in the body. They can stay in your system up to 12 days after you stop taking them.
Anyone who has had a previous unusual reaction to any calcium channel blocker should let his or her physician know before taking the drugs again.
This medicine should not be discontinued without checking with the prescribing physician. Some conditions may worsen when patients stop taking calcium channel blockers abruptly.
The effects of taking calcium channel blockers during pregnancy have not been studied in humans.
Patients taking certain calcium channel blockers may need to check their pulse regularly, as the drugs may slow the pulse too much.
Digitalis heart medicines: Taking these medicines with calcium channel blockers may increase the action of the heart medication.
The patient taking calcium channel blockers should keep taking the medicine, to give it time to work. Once it begins to work and symptoms improve, it should continue to be taken as prescribed.
Anti-seizure medications such as carbamazepine (Tegretol). Calcium channel drugs may increase the effects of these medicines.
Some calcium channel blockers pass into breast milk, but there have been no reports of problems in nursing babies whose mothers were taking this type of medication.
Taking calcium channel blockers with certain other drugs may affect the way the drugs work or may increase the chance of side effects.
Anyone taking calcium channel blockers should therefore consult with the prescribing physician concerning how much exercise and activity may be considered safe.
Cyclosporine (Sandimmune), a medicine that suppresses the immune system. Effects may increase if this drug is taken with calcium channel blockers.