RxSideEffect.org: The effects of drugs vary depending upon the drug taken

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Like most prescription medicines, migraine drugs can cause side effects. These unwanted effects are often mild, but sometimes they are more serious and can have a major impact on health or quality of life. Most of modern migraine medications are very well tolerated and only rarely cause serious side effects. The effects of drugs can vary depending upon the kind of drug taken, how much is taken, how often it is used, how quickly it gets to the brain, and what other drugs, food, or substances are taken at the same time. Effects can also vary based on the differences in body size, shape, and chemistry. Migraine drugs differ in how commonly they cause particular side effects. Medications are prescribed for a specific purpose, and anything else the drug does is a side effect. Some side effects are mild, like a slight headache. Others, like liver damage, can be severe and, in rare cases, fatal. Some go on for just a few days or weeks, but others might continue as long as you take a medication, or even after you stop. Some occur within days or weeks of starting a drug. Others may only show up after months or years of therapy.

Migraine is an episodic, unpredictable headache disorder that presents with disabling attacks. These migraine attacks can be successfully treated with acute medications. Some of these medications are available over the counter and are prescription medications. In general, if you are experiencing two or more severe migraine attacks a month, you could be a candidate for preventive therapy. You can determine the success of your medication by treating as few as two or three headaches and monitoring your improvement, or lack thereof. Delay in treating your migraine can make it more difficult for your headache to respond to the medication.

Sufferers tend to feel throbbing, stabbing pain on one side of the head, with pain and pressure behind the eyes and around the temples. Migraine headaches can cause vomiting, sensitivity to light and sound, even temporary loss of vision. It may take 2 to 3 months before you notice a decrease in the frequency or severity of attacks even after reaching the beneficial dose. Some side-effects may be serious while others may only be a mild inconvenience.