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I'm guessing this is based on the old wives tale that says vitamine c can stop an LSD trip, or sober you up in some way... This theory is completely baseless and untrue, I know of no drug that is affected by grapefruit juice or vitamine c.

AnswerGrapefruit juice is processed by your body in the liver by an enzyme which also degrades many drugs (not all drugs, just some such as cholesterol drugs like Lipitor and some blood pressure medications). When taking one of these medications and drinking grapefruit juice, the grapefruit inhibits the metabolism of these drugs (i.e. it is hogging the enzyme all to itself in the liver and not leaving any for the medication so it can't be broken down). The result is having too much of the medication in your body, which can lead to toxicity.

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Grapefruit, and grapefruit juice contains several antioxidants that block the enzyme CYP3A4 for roughly 24 hours. This enzyme is responsible for breaking down certain types of drugs. when you take a drug while this enzyme is blocked it might increases the effects of the drugs. Depending on the drug, it can cause reactions that are either minimal, serious, or non existant.

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Q: What is the effect of grapefruit juice on drugs?
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Cimetidine and/or grapefruit juice make benzo's (among many other drugs) have a stronger effect.


Which fruit juice interferes with utilization of cardiovascular and central nervous system drugs?

Grapefruit juice


What is a common side effect from taking certain prescription drugs and consuming grapefruit juice?

This question is a bit hard to understand, but I'm aware that grapefruit has a number of interactions with other drugs. It affects diabetic drugs and many other common ones so it's worth checking for the interactions.


What are the negative effects of drinking grapefruit juice?

The negative effects of drinking grapefruit juice include negative interactions with certain drugs, which increase blood levels of the drug to harmful levels. Grapefruit juice inhibits a chemical in the intestine needed to break down many drugs in the body, making the drug become more potent.


Does orange juice intensify the effects of xanax?

No, the syngergistic effect is exclusive to grapefruit juice. Grapefruit juice is broken down by the same enzyme in the stomach as benzodiazepines, so more of the drug enters your bloodstream if your stomach is "busy" breaking down the grapefruit juice.


Is eating grapefruit the same as drinking grapefruit juice when taking lipitor eg half a grapefruit a day?

Studies up to now show that the juice and the fruit have both a significant interaction with some drugs (including lipitor).


What else besides grapefruit will help burn fat I can't have grapefruit due to high cholesteral.?

Cranberry juice has a diaretic effect


Why patients taking theophylline should not take grape juice?

You can drink grape juice when taking theophylline. What you should not drink is grapefruit juice. This is because grapefruit juice can decreae the effects of taking theophylline. However, at this time, it has not been determined how serious this effect is.


Does sprite have grapefruit juice in it?

Sprite does not have grapefruit juice. There is a grapefruit juice which has sprite in it. You can add sprite to nearly any drink to make a spritzer.


Should you drink grapefruit juice with your medications?

No. Some medications give instructions not to have grapefruit juice with the medicine. I know statins are explicit about not having grapefruit juice.


Tomato juice is 10x more basic that grapefruit juice If the pH of grapefruit juice is 3 what is the pH of tomato juice?

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What is PH of grapefruit juice?

The pH level for grapefruit juice is between 3 - 3.3