6 absolute medicines should not be taken with hot water

Date: 25/ 02/2019

Using hot water with herbal medicine, digestive enzymes can reduce or eliminate the effectiveness of the drug.

Most people take medication to pay attention to the use and dosage, but pay less attention to the temperature of the water used to drink it. In fact, hot water should not be used to take medicine because it can cause physical or chemical reactions that affect drug effectiveness.

Here are 6 medicines you absolutely don’t drink with hot water, according to People.

Digestive enzymes and vaccines

Enzymes that support digestion with active proteins when exposed to high temperatures will be separated, thereby reducing or losing their effects. A similar phenomenon occurs with vaccines and highly active bacterial preparations. Ideally, these drugs should be used with cooled boiled water below 40 degrees C.


The vitamins C, B1, B2 … have unstable properties, so when exposed to hot water, it is easily oxidized, degraded and lost effectively.

Pill capsules

The main component of capsule capsule is gelatin. Meeting hot water, capsule shells will quickly dissolve to make the drug inside spread, not only affect the taste but also reduce the effectiveness and safety of the drug. Therefore, capsules are recommended for use with moderately warm water.


Types of syrup like cough syrup are easily diluted by hot water. At that time, the drug cannot cover the inflamed parts such as to form a protective film, stimulate mucus and reduce cough. If you drink syrup, you should not use too much water and make sure the water temperature is below 37 degrees C.


Herbal medicines with ingredients such as honeysuckle, Bupleurum, Schizonepeta, musk, mint … have a distinctive scent and contain valuable essential oils. However, they often evaporate a lot, especially when exposed to high temperatures, so they should only drink with water at a temperature not exceeding 40 degrees C.

Amoxcilin antibiotic

Amoxcilin is more susceptible to hydrolysis, the higher the temperature, the higher the hydrolysis rate. Polymer polymer formation after hydrolysis can cause allergic symptoms similar to penicillin. Therefore, when taking Amoxcilin, the water temperature should be controlled below 40 degrees Celsius or used with cooled boiled water.