My advice is to talk to your pharmacien, part of the training is the interactions between medicines/food.
I did, however, look at a couple of papers and the problem appears to be with grapefruit and pomelo.
Neither the 2 doctors or the pharmacien have issued any such alarm, which is why I asked the question here. But slightly alarming your reply because I believe pomelos is what these large oranges are that I have been buying, including again this morning . Also eating one at this very moment. 
I would not get too alarmed. Below is an example interaction advice I found on the UK NHS site. Drugs.com is another useful site, but being American it is driven by lawyers.
Thank you, most useful and I am re-assured, only drinking more than a litre of grapefruit juice a day would be a problem. I donât think I need to worry about 1 large pomelo a day, juicy, but not that juicy. 
Pomelos are green. Is it a rose pamplemousse that you are consuming? Pamplemousse is grapefruit.
Itâs not just blocking substances. Grapefruit potentiates a nunber of drug types too ie increases the effects, of some drugs.
Personally Iâd hope this was being researched in order to try to find ways of reducing dosages of some, if grapefruit can be added in a standardised way to those drugs.
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I canât count the number of times i I have been faced with forbiden grapefruit at friends" houses. And eaten it out of politesse.
I wouldnât do it every day. But neither am i going to be one of those miserable guests who donât eat the food that has been prepared.
I tell themin advance and if they forget then I forget. Have an extra glass of water when I get home and Doesnât seem to have caused any harm
About 25 yrs ago I was prescribed meds for depression (sceptical 
) and raised BP. I was told to avoid grapefruit, I didnât ask why because I have never been a lover of the fruit. Within a few years of moving to France I had weaned myself of the ADâs 
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The skin is orange, like an orange, but the flesh is deep red in colour. I just seem to remember that pomelo was the name on the box they are in.
For some reason Mr. Google displays only French on my computer now and seems more confused than I am as to what a pomelo is. One description is that it is a cross between an orange and a grapefruit. 
Whatever, I donât think I am consuming enough to worry one way or the other.
One example is grapefruitâs effect on calcium channel blockers, often prescribed to lower blood pressure - Amlodipine is an example. Grapefruit will dramatically increase the effectiveness of the drug and can lead to dangerously low blood pressure. The odd sip probably wouldnât do any harm but itâs up to the individual to decide.
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Yes he had columns in it 
Says a lot!
As stated in my post
âThe grapefruit juice contains compounds (furanocoumarins) that block the metabolism of certain drugs, particularly certain statins leading to an increased concentration of the drug in the body.â
The higher the concentration the greater the effect.
I would be cautious and consult at your pharmacie to be sure.
They are trained in drug interactions.
I agree with B73.
How much grapefruit does it take to interfere with medication?
One whole grapefruit or 200 mL of grapefruit juice is sufficient to cause clinically relevant increased systemic drug concentration and subsequent adverse effects. Seville oranges, (often used in marmalades), limes and pomelos also produce this interaction.
Grapefruitâmedication interactions: Forbidden fruit or avoidable consequences? - PMC(often%20used%20in,pomelos%20also%20produce%20this%20interaction.
Pomelos are grapefruit hybrids. The doctor told me not have them at all when I am on my meds.
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Just take one and eat grapefruit; deprive the pharma industry of salesâŠ
une blague!
Auchan obviously canât even get the picture right. I will check before the next one.
And then sue the docs and the pharmacy if I drop dead.
When I lived in the UK I played rugby and the coach used to say âdonât come running to me if you break a legâ errr.
While trying to persuade my elderly parents that they really need some support, I blurted out to my father âone day youâre going to waken up dead, and whatâs mum going to do if no one is coming in?â.
She has Alzheimerâs and heâs very frail so itâs becoming very difficult.