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- What is caffeine tablets-oral, and how does it work (mechanism of action)?
- What brand names are available for caffeine tablets-oral?
- Is caffeine tablets-oral available as a generic drug?
- Do I need a prescription for caffeine tablets-oral?
- What are the side effects of caffeine tablets-oral?
- What is the dosage for caffeine tablets-oral?
- Which drugs or supplements interact with caffeine tablets-oral?
- Is caffeine tablets-oral safe to take if I'm pregnant or breastfeeding?
- What else should I know about caffeine tablets-oral?
What is caffeine tablets-oral, and how does it work (mechanism of action)?
Caffeine acts as a stimulant of the nervous system by inhibiting the enzyme phosphodiesterase, just like theophylline and aminophylline. Inhibiting this enzyme leads to increased formation of the proteins which causes release of stimulating chemical signals known as neurotransmitters. These neurotransmitters bind to various sites in the body, including the brain, heart, and muscles to cause a stimulant effect.
What are the side effects of caffeine tablets-oral?
Side effects associated with caffeine supplements include irregular heartbeat, chest pain, flushing, palpitations, rapid heartbeat, agitation, dizziness, hallucinations, headache, insomnia, irritability, psychosis, restlessness, rash, increased pressure in the eye, and frequent urination.
What is the dosage for caffeine tablets-oral?
100 to 200 mg every 3 to 4 hours as needed no later than 6 hours before bedtime.
Which drugs or supplements interact with caffeine tablets-oral?
Combining caffeine with other stimulating agents, such as methylphenidate (Ritalin, Ritalin SR, Ritalin LA, Concerta, Methylin, Methylin ER, Metadate CD, Metadate ER), should be done with caution. This combination may cause increased side effects including rapid heartbeat, high blood pressure, hallucinations, tremor, and anxiety. Other dietary sources of caffeine, such as tea, add to the effect. Caffeine should be used with caution with adenosine, as the effects of adenosine may be diminished. Linezolid, phenelzine, selegiline, and tranylcypromine combined with caffeine increases the risk of high blood pressure. Consider alternatives when combining caffeine and vemurafenib and Stiripentol as caffeine concentrations may be increased.
Is caffeine tablets-oral safe to take if I'm pregnant or breastfeeding?
Category C; usual dietary exposure to caffeine is unlikely to cause congenital malformations, however studies show conflicting results about adverse events. Concentrations in the mother are similar to those found in the fetus. Daily intake should be no more than 200 mg.
Caffeine enters the breast milk, and, therefore should be used cautiously by nursing mothers.
What else should I know about caffeine tablets-oral?
What preparations of caffeine tablets-oral are available?
Tablets: 200 mg; Lozenge: 75mg
How should I keep caffeine tablets-oral stored?
Caffeine should be stored at room temperature, between 20 C to 25 C (68 F to 77 F).
Caffeine (Enerjets, No Doz, Vivarin) is an over-the-counter (OTC) stimulant used to revive mental alertness and wakefulness when feeling fatigue and drowsiness or caffeine withdrawal. Side effects, drug interactions, dosage, and storage information should be reviewed prior to taking this drug.
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.