Olmesartan ester is not recommended to be combined with fumaric acid. Olmesartan ester is an anti-hypertensive drug that can be used to treat high blood pressure disorders and is mainly composed of Olmesartan esters. Fumaric acid, on the other hand, is a food additive that is often used in combination with tartaric acid and citric acid. The two have different effects, if combined together will weaken the effect of the drug, there may also be poisoning and other symptoms, so Olmesartan ester is not recommended to be combined with fumaric acid. Taking olmesartan ester need to pay attention to the allergy to this drug is prohibited, and patients may take joint pain, nausea, gastroenteritis, facial edema, headache, rash and other adverse reactions, in addition, try not to smoke and drink during the medication, and do not eat spicy and stimulating food, so as not to aggravate the condition, if there is any discomfort, you should consult a doctor in a timely manner. Olmesartan ester is a prescription drug, must be prescribed under the guidance of a doctor to get the drug, remember not to use the drug without authorization.