Tweet. There are no known adverse reactions between Plavix (Clopidogrel) and eating grapefruit, or drinking grapefruit juice. Furthermore, there is no sufficient evidence that illustrates grapefruit juice, or the fruit itself would interfere with the effectiveness of Plavix.
Other, more minor side effects include constipation, headache, dry mouth and insomnia (because the chemicals in these drugs also influence sleep patterns). Herbal diet pills, even though they're all natural, can have potentially dangerous side effects depending upon their ingredients.
What are some of the side effects of cyclobenzaprine? Some of the more common side effects of cyclobenzaprine include blurred vision, dizziness, drowsiness and dryness of the mouth, according to Drugs.com. Side effects such as gas, nausea, vomiting, stomach cramps or pain are less common.