As is the case with most prescription medications, you may expect to experience certain side effects. Calcium channel blockers are no exception. If your doctor diagnoses you with a condition, such as high blood pressure, he may provide you with a prescription for a calcium channel blocker. At that time, he will likely discuss with you potential side effects of the medication, one of which is the possibility of hair loss.
Function
According to MayoClinic.com, calcium channel blockers "prevent calcium from entering cells of the heart and blood vessel walls." It is by this mechanism of action that calcium channel blockers help lower your blood pressure. In addition, these medications can cause your blood vessels to relax and widen, or dilate. This provides an additive effect on the lowering of your blood pressure.
Types
There are two types of calcium channel blockers--short-acting and long-acting. Long-acting formulations are marketed to release the medication slowly and steadily over a long period of time. Short-acting formulations may require repeat dosing depending on your doctor's recommendations. There are also several pharmaceutical companies that manufacture both brand and generic calcium channel blockers. Your doctor will prescribe one that is best for you.
General Side Effects
MayoClinic.com suggests several side effects commonly associated with calcium channel blockers. These include nausea, drowsiness, headache, constipation, rapid heart rate and rash. Your doctor will advise you regarding what side effects to expect, as well as side effects that might warrant intervention. If, after beginning the medication, you notice any of these side effects becoming intolerable, you should notify your doctor.
Potential for Hair Loss
Telogen effluvium is a type of hair loss that can occur as a result of several things, including a stressful event. But there are also certain medications that can cause this type of hair loss, as well. Calcium channel blockers are one such medication. If the hair loss you are experiencing is diffuse and begins a couple weeks to a couple months after beginning a calcium channel blocker, the medication is likely the culprit. However, it is best to have the hair loss evaluated by a professional, as there are many potential causes for the condition. Telogen effluvium is temporary and usually begins to slow down approximately six to eight months after discontinuing exposure to its cause. If the amount of hair you are losing is more profuse and is causing you anxiety, ask your doctor if there are alternatives to your treatment.
Warnings
In addition to side effects that include potential hair loss, there is research that correlates a higher than average incidence of certain medical conditions associated with taking calcium channel blockers. The American Academy of Family Physicians suggests that health events like heart attacks and gastrointestinal bleeding may occur more often in those taking this type of medication. The incidence of cancer may also occur more frequently. Discuss your potential risk for developing these conditions with your doctor to decide if the risks of taking a calcium channel blocker--outside the realm of side effects like hair loss--outweigh the benefits.
