Expect to feel tired if you are taking medicines that make you tired/sleepy on regular basis, but other types of medications can also cause fatigue. This is one of the most common side effects of prescription and over-the-counter medications.
When you get tired of drugs, it happens because of the effects of the chemicals in your brain called neuro-transmitters. Your nerves use them to carry messages to each other. While some of them control how they feel awake or sleepy.
Medicines That Make You Tired
Most common drugs that can make you exhausted or tired are:
Allergy Medications (Antihistamines): such as diphenhydramine, brompheniramine (Bromfed, Dimetapp), hydroxyzine (Vistaril, Atarax), and meclizine (Antivert). Some of these antihistamines are also in sleeping pills.
Antidepressants: A type of antidepressant called tricyclic’s can make you tired and sleepy. There are many which are estimated to do so than others, such as amitriptyline (Elavil, Vanatrip), doxepin (Silenor, Sinequan), imipramine (Tofranil, Tofranil PM) and trimipramine (Surmontil).
Anxiety Medication Benzodiazepines such as alprazolam (Xanax), clonazepam (Klonopin), diaze-pam (Valium) and loraze-pam (Ativan) can make you sleepy or weak for a few hours to several days, depending on what you take.
Drugs against Blood Pressure: Beta-blockers, such as atenolol (Tenormin), meto-prolol tartrate (Lopressor), meto-prolol succinate (Toprol – XL), and propranolol hydrochloride (Inderal), to name a few. They work by slowing your heart, which can tire you.
Cancer Treatment: Many types of cancer cures can make you very tired by changing the levels of protein and hormones in your body. As they kill cancer cells, they damage or destroy some normal cells. Then your body has to spend more energy to repair or clean the cells.
Intestinal Medications: Medicines that control nausea, prevent you from vomiting, or treating diarrhea can make you sleepy.
Muscle Relaxants: Most muscle relaxants do not work directly on your muscles. Instead, they work on the nerves of your brain and your spine to relax the muscles. Its effects on your nervous system can make you drowsy and tired. Few common muscle relaxants are cariso-prodol (Soma) and cyclobenza-prine (Flexeril).
Opioid Analgesics: The Substance Opioids act like the chemicals your body makes to control agony of pain, called endorphins. The most common are morphine, oxymorphone (Opana, Opana ER), oxycodone (OxyContin, OxyIR), fentanyl (Actiq, Duragesic, Fentora), oxycodone and aspirin (Percodan), oxycodone and acetaminophen (Percocet, Roxicet) and hydrocodone and acetaminophen (Lorcet, Lortab, Vicodin).
The Medicine, We Use Against Epilepsy: Also called anticonvulsants. These medicines can act on your brain cells or the chemicals they use to send messages. Some of these medications are the same as those that treat anxiety, such as benzodiazepines. Other common drugs are carbamazepine (Tegretol / Tegretol XR / Carbatrol), phenobarbital, phenytoin (Dilantin, Phenytek), topira-mate (Topamax) and val-proic acid (Depakene, Depakote).
The type of medicine you are having is not listed here, check the label, which may look like “may cause drowsiness.” This can help you know what to expect as you take it.
What You Should Do
If your dosage of medicine get you exhausted, do not stop taking it. You can try other ways to combat the side effect and get a boost of energy:
Exercise, such as brisk walking or some stretching.
Take deep breaths.
Drink some caffeine, like coffee or tea
If you are taking any, over-the-counter drugs, ask your doctor or pharmacist if there are “sleepy” versions that you can use instead. It is important to ask to make sure that it does not affect the other medications you are taking.
Your doctor can help you manage the fatigue you feel about prescription drugs. Doctor might:
Change your medications
Change your dose
Tell you to take your medicine at a different time, such as in the evening or before bedtime
Get recommended medicine to help you make alert and conscious
Do not take any medications that are supposed to help you stay awake unless your doctor tells you that everything is fine.