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MONTHLY NEWSLETTER March 2009 FAQ. Don't take preparatoin if you take nitrates, often prescribed for chest pain, as this may cause a sudden, unsafe drop in blood pressure. Did somebody forward this message to you? Then SIGN UP HERE To no longer receive these messages, please click Unsubscribe OR Send a postal mail to: Ottho Heldringstraat 0, 47255 AZ Amsterdam, The Netherlands