This citrus fruit slows the enzyme activity that the body needs to process more than 50 medicines.
If your tablets lift your potassium levels, avoid slurping OJ. An excess of potassium can lead to symptoms such as muscle cramps or heart palpitations.
Also be aware of:
Calcium makes it harder for the body to absorb some prescription meds, such as thyroid-hormone pills.
Vitamin K can inhibit the effects of blood-thinning meds, like warfarin.