Jeg vil gå ud fra at det er fordi stoffet interagerer med forskellige andre medikamenter. Prazosin bruges oftes i sammenhæng med andre præperater, for at opnå den bedste effekt. Her kan det være utrolig vigtigt at disse tages hænsigtsmæssigt i forhold til hinanden, for at minimere eventuelle bivirkninger.
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To avoid falling, take the first dose at bedtime. Prazosin may cause dizziness. It is a good idea to take every dose at bedtime, if possible.
Use caution when you stand or sit up from a lying position, especially if you wake up during the night. Dizziness may occur when changing positions.
Do not stop taking this drug suddenly even if you feel better. Stopping suddenly could cause your blood pressure to increase.
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What happens if I miss a dose?
Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the dose you missed and take only the next regularly scheduled dose. Do not take a double dose of this medication. A double dose could cause your blood pressure to become severely low.
If you miss doses for several days in a row, call your doctor before taking any additional doses. You may need to restart treatment with a lower dose.
http://www.drugs.com/MTM/prazosin.html