Can I drink coffee after 5 pm?

In this text we will answer the query “Can I drink coffee after 5 pm?” and discuss the act of drinking coffee and sleep. We will also discuss  how this relationship is given according to the amount of caffeine consumed.

Can I drink coffee after 5 pm?

Drinking too much coffee after 5 pm can disrupt your sleep. Therefore, it is advisable to reduce or stop drinking coffee after 5 pm. Since the caffeine present in coffee has a stimulating effect.

Coffee and chocolate are foods considered stimulants, which contribute to the state of wakefulness and constant attention. The blame for this characteristic lies with caffeine, among other substances, which acts on the central nervous system, especially the brain, and interferes with one of the sleep-inducing mechanisms.

What is the relationship of caffeine with sleep?

The relationship of caffeine with sleep is due to caffeine being relatively similar to adenosine and thus manages to occupy brain receptors.

Everyone wakes up knowing that at the end of the day, they will go back to sleep again, as this is our biological cycle. To keep this cycle working, our body gives us signs that we need to rest, such as tiredness and exhaustion itself. 

Throughout our day, we spend energy molecules, called ATP, which are essential for the functioning of our cells. However, along with the consumption of ATP, our body produces another substance, called adenosine. 

And it is this substance that is responsible for making us tired and sleepy, as it binds to receptors that cause these effects in us. And where does caffeine enter this process? Chemically, it is similar to Adenosine. 

In this way, it manages to occupy the receptors that adenosine would bind to and with that, the sleep effect does not appear. This effect is what we consider to be an extra energy gain, and is perhaps the main reason for drinking coffee. However, adenosine remains in the body, waiting for the receptor to become free so that it can bind.

“Once the caffeine goes away, you reach a very high level of ‘sleep pressure’ and you have to pay it back,” illustrates neuroscientist Bradshaw.

How do different amounts of caffeine affect our sleep?

The different amounts of caffeine affecting our sleep depends on the frequency and amount ingested. Moderate amounts after the energetic effect. However, high doses have the opposite effect.

If you’re sleeping less, stressed, and relying on caffeine to improve it, it’s a perfect storm for a short-term fix that will make things worse in the long run.

“You’re going to add more doses to your espresso, but the negative impact on your sleep will continue, and that’s cumulative,” he says.

If you are looking to improve your mood, the solution may lie in reducing the amount of coffee you drink. Of course, if you are already used to consuming high doses, the ideal is to gradually reduce it so your body doesn’t feel so much. 

Some tips that can be useful is to replace the traditional coffee every day with decaf, so we escape the effects of caffeine. Another tip is to drink coffee every other day. Another option is that, when tired, the person simply rests and, preferably, has a peaceful night’s sleep. 

Try to follow these tips and you will get good results.

Is drinking coffee while taking sleeping pills dangerous?

There are no studies that show a dangerous relationship between caffeine and the substances in sleeping pills. However, if these medications help to control anxiety, one of the effects of drinking coffee regularly is to increase anxiety.

According to the FDA (American Health Agency) guideline that informs about dangerous interactions between medicines and foods, products that contain caffeine and medicines should not be combined whose active ingredient is theophylline (prescribed for asthma, bronchitis and chronic obstructive pulmonary disease).

This is because the substances overlap, increasing the drug’s toxicity and intensifying adverse effects such as tachycardia and agitation. The same can happen when mixing caffeine and the antibiotic ciprofloxacin, resulting in headache, insomnia and nausea.

However, there is no indication of the interaction of substances contained in sleeping pills with caffeine.

There are some drinks that can really help you get a good night’s sleep.

Foods and liquids that contain certain minerals, therapeutic herbs and tryptophan (an essential amino acid) stimulate the production of serotonin and melatonin, which are important hormones in the regulation of sleep.

Below is a list of drinks to help you sleep better at night:

  • Warm Milk
  • Almond Milk
  • Malted Milk
  • Valerian Tea
  • Chamomile Tea
  • Pure Coconut Water
  • Tart Cherry Juice


In this text we answered the query “Can I drink coffee after 5 pm?” and discussed the act of drinking coffee and sleep. We also discussed  how this relationship is given according to the amount of caffeine consumed.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.