Robitussin DM (robid) is a prescription medication used to treat attention deficit hyperactivity disorder (ADHD). Its main ingredient is methylphenidate hydrochloride, which acts on the central nervous system to improve concentration and focus. However, it may cause some side effects such as restlessness, agitation or anxiety. Some users experience insomnia when taking this drug.
The most common side effect of robitussin DM is insomnia. Sleepiness occurs due to its stimulant properties. It causes your body to produce less melatonin, which regulates sleep cycles. Melatonin helps regulate the amount of time you spend asleep and wakefulness periods throughout the night.
If you are a person who suffers from jet lag, robitussin DM could affect your sleep patterns because it affects circadian rhythms and changes the timing of sleeping hours.
Another possible side effect of robitussin DM is weight gain. It increases appetite and leads to increased caloric intake. People who take this medication tend to eat more than usual during the day and exercise less at night. These factors lead to weight gain.
Weight loss is not recommended with this medication since it may cause some problems with blood sugar control and diabetes mellitus complications.
In addition, there have been reports of headaches occurring after using robitussin DM for ADHD symptoms. Headaches are believed to be linked to the changes of sleep cycles. The headaches might be due to sleep deprivation and not getting enough sleep every night.
These side effects may be troublesome but they typically do not last more than a few weeks. As you begin to adjust to taking medication, your body will start to wake up and fall asleep at more regular intervals. After several weeks, you should begin to experience fewer side effects.
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