Some of you may remember from earlier posts that my latest official bout of NA hit in the end of 2006. By the early part of 2007, I was having the start of eye pressure increases. After a few tests, I was given a prescription for Timolol. In the period after this, I noticed that I had tremor and fatigue that seemed to go beyond anything seen discussed for people who are recovereing from an attack of NA.
When I went to a Neurologist to see what the tremor was caused by, I told him that I was taking Timolol to control the high eye pressure. He prescribed Propranolol for the tremor. I asked him if it was a problem if I was already taking Timolol, since I knew they were both beta blockers. I knew to ask- He told me there was no problem.
Info on Timolol interactions from http://www.medicinenet.com/timolol_ophthalmic_solution/article.htm
“DRUG INTERACTIONS: Combined use of oral beta- adrenergic blocking agents, for example, propranolol (Inderal), atenolol (Tenormin), metoprolol (Lopressor) or carvedilol(Coreg) with ophthalmic timolol can result in additive effects. Thus, patients may experience excessively low blood pressure or reductions in heart rate.”
“SIDE EFFECTS: Ophthalmic timolol can cause irritation to the eye which may manifest as pain or dryness in some people. Rarely, timolol eye drops can result in side effects that are seen with other oral beta adrenergic blockers. For example, persons can experience fatigue, insomnia, nausea, slow heart rate, low blood pressure, cold extremities, and shortness of breath or wheezing.”
From another site http://www.drugs.com/sfx/timolol-side-effects.html
“All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Timolol Gel Eye Drops:
Blurred vision; dizziness; dry eyes; feeling that something is in your eye; headache; increased tear production; minor burning, itching, or stinging of the eye; nausea.
Seek medical attention right away if any of these SEVERE side effects occur when using Timolol Gel Eye Drops:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); chest pain or discomfort; confusion; eye irritation, swelling, pain, or discharge; eyelid pain, redness, scaling, drooping, or swelling; fainting; pain, numbness, weakness, or tingling of an arm or leg; severe or persistent headache or dizziness; shortness of breath; slow or irregular heartbeat; swelling of the hands, ankles, or feet; vision changes.”
It goes on to add among others, vertigo and tinnitus, both of which I have had since this all started. I have also had quite a few of the others at various times, always blaming NA for the ones not directly related to eyes. My new Eye Doctor asked me if I had any tremor, and when I said yes, he asked about exercise intolerance and depression. Here I thought all of my troubles were either from NA or that maybe other doctors had missed something obvious, and a lot of this could be due to my eye medication. It is no doubt a good thing that I stopped the Propranolol on my own. It may be my tremor was caused by its cousin Timolol.
Needless to say, he took me off of Timolol. If I truly need eye medication in the future, there are others without the mess of side effects.
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