Avoid a diet high in salt. Too much salt will cause your body to retain water and will
decrease the effects of chlorothiazide.
Avoid prolonged exposure to sunlight. Chlorothiazide may increase the sensitivity of
your skin to sunlight. Use a sunscreen and wear protective clothing when exposure to the sun is
unavoidable.
Avoid becoming overheated in hot weather. It is easy to become dangerously dehydrated
while taking chlorothiazide and methyldopa.
Avoid alcohol while taking chlorothiazide and methyldopa. Alcohol, which will
further lower your blood pressure, will increase the drowsiness caused by chlorothiazide and
methyldopa and may also increase dizziness. Use caution even with small amounts of alcohol.
Avoid other drugs such as sleeping pills, prescription pain relievers, antihistamines, and
antidepressants. These products will also increase the drowsiness you experience. Talk to your
doctor or pharmacist about any other prescription or over-the-counter medications you are taking.
Use caution when driving, operating machinery, or performing other hazardous
activities. Chlorothiazide and methyldopa may cause dizziness. If you experience dizziness,
avoid these activities.
Do not take chlorothiazide and methyldopa if you are taking a monoamine oxidase
inhibitor (MAOI), or if you have taken one in the last 14 days. MAOIs, used to treat depression,
include isocarboxazid (Marplan), phenelzine (Nardil), and tranylcypromine (Parnate).
Before taking this medication, tell your doctor if you are taking any of the following
medicines:
-
barbiturates such as phenobarbital (Luminal, Solfoton),
amobarbital (Amytal), or secobarbital (Seconal), which may cause extreme sleepiness or
dizziness if taken with chlorothiazide and methyldopa;
-
narcotic pain relievers such as codeine (Tylenol #3, Tylenol
#4, others), propoxyphene (Darvon, Darvocet, Wygesic), oxycodone (Percodan, Percocet,
Tylox), meperidine (Demerol), morphine (MS Contin, Duramorph, others), and others also may
cause extreme sleepiness or dizziness if taken with chlorothiazide and methyldopa;
-
steroid medications such as hydrocortisone (Hydrocortone,
Cortef), prednisone (Deltasone, Orasone), prednisolone (Delta Cortef, Prelone),
methylprednisolone (Medrol), betamethasone (Celestone), dexamethasone (Decadron,
Hexadrol), and others, which may increase the side effects of chlorothiazide;
-
prescription and over-the-counter cough, cold, allergy, diet,
and sleeping pills, which may affect your condition or your treatment with chlorothiazide and
methyldopa;
-
the cholesterol-lowering drugs cholestyramine (Questran)
and colestipol (Colestid), which may decrease the effects of chlorothiazide;
-
nonsteroidal anti-inflammatory drugs (NSAIDs) such
as ibuprofen (Motrin, Advil), ketoprofen (Orudis, Orudis KT, Oruvail), and naproxen (Naprosyn,
Anaprox, Aleve), which may decrease the effects of chlorothiazide and also may increase the risk
of damage to your kidneys;
-
other commonly used NSAIDs, including diclofenac
(Cataflam, Voltaren), etodolac (Lodine), fenoprofen (Nalfon), flurbiprofen (Ansaid),
indomethacin (Indocin), ketorolac (Toradol), mefenamic acid (Ponstel), nabumetone (Relafen),
oxaprozin (Daypro), piroxicam (Feldene), sulindac (Clinoril), and tolmetin (Tolectin);
-
oral antidiabetic drugs such as glipizide (Glucotrol),
glyburide (Micronase, Glynase, Diabeta), chlorpropamide (Diabinese), tolazamide (Tolinase),
and tolbutamide (Orinase), which may not lower your blood sugar as well during therapy with
chlorothiazide and methyldopa (your diabetes therapy may have to be adjusted);
-
lithium (Lithobid, Eskalith, others), which should not be
taken with chlorothiazide because serious side effects may result; or
-
other drugs that also lower blood pressure, including
acebutolol (Sectral), atenolol (Tenormin), bisoprolol (Zebeta), carteolol (Cartrol), labetolol
(Trandate, Normodyne), propranolol (Inderal), pindolol (Visken), timolol (Blocadren),
benazepril (Lotensin), enalapril (Vasotec), captopril (Capoten), fosinopril (Monopril), lisinopril
(Prinivil, Zestril), moexipril (Univasc), quinapril (Accupril), ramipril (Altace), amlodipine
(Norvasc), bepridil (Vascor), diltiazem (Cardizem, Dilacor), felodipine (Plendil), isradipine
(Dynacirc), nicardipine (Cardene), nifedipine (Adalat, Procardia), nimodipine (Nimotop), and
verapamil (Calan, Veralan, Isoptin).
Drugs other than those listed here may also interact with
chlorothiazide and methyldopa or affect your condition. Talk to your doctor and pharmacist
before taking any prescription or over-the-counter medicines.