4 Modafinil Side Effects and How to Avoid Them

Modafinil can have some wonderful benefits. Incredible focus, productivity, and results. All from one little pill. However, what’s not commonly talked about are the Modafinil side effects. Now, most of these are quite minor and can actually be countered or avoided altogether, very easily.

I do need to say: I’m not a doctor.

Needless to say if you start having a heart attack or pooping your pants—get to a real doctor. Of course, most medicines are labeled with dozens of incredibly severe side effects that rarely happen. It’s simply the law. However, for simplicity’s sake on this post—we’re focusing on the side effects that you yourself can control. Nothing too crazy. Like I said, if you do get some of the really bad side effects—get to a doc. ASAP.

So what are these more “moderate” Modafinil side effects, and how can you counter them? Let’s dive right in.

4 Modafinil Side Effects & How to Avoid Them

#1: Dehydration

Modafinil side effects

Modafinil will make you feel like you’re in a dessert if you’re not properly prepared for it. For one reason or another, it dehydrates you to incredible levels. I’ve felt better after running 10 miles about my hydration than at times when I’ve taken Modafinil.

Sound scary?

It doesn’t have to be! Thankfully, unlike running 10 miles, water is readily available when you’re taking Modafinil. Let’s face it, most of you are probably taking it to help you be more productive on a “white collar” task—building a business, writing a school paper, or studying for an exam.

The one rule of thumb I have about hydration is this: drink before you’re thirsty.

That’s it. If you’re planning a crazy Modafinil day, make sure you start your hydration early, and continue to hydrate often. I’d drink a full bottle of water upon waking up, for good measure. Then make sure you’re drinking at least another glass of water every hour.

Many of us supplement Modafinil by drinking copious amounts of coffee, too. Which is yet another substance that dehydrates you.

The point is—this side effect is easy to counter. Drink water early, often, and you can even add in some sports drinks if you’d like.

Modafinil side effects headache

#2: The Moda-Ache

Another nasty side effect that some people experience with Modafinil is a splitting headache. I’ve only had one of these once, so I guess I’m lucky.

The most important thing is to start your Modafinil dosage small. If you’ve never tried it, you certainly don’t need to go and take a full 200mg pill. Try slicing a 100mg pill in half and see how your body responds to it.

I think the Modafinil headaches occur mostly because of a slight “overdose”—starting off too high when a newbie should be starting low.

I have found that caffeine does help with the headache. Drink a strong espresso or make a big cup of coffee. Other than that, you might just have to tough it out. Some people experience the headaches the first couple of times that they try Modafinil. Tough it out and you’ll be a productivity powerhouse in no time at all!

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#3: Anxiousness

Modafinil side effects

I’ve definitely had my moments on Modafinil that I was just tapping my foot with anxiety. I was restless, and couldn’t sit still. This is totally normal, and I’ve found that it most commonly occurs to me when I don’t have a plan.

For many people, Modafinil works as a focus drug. This means that if you have a task laid out, you will work non-stop to complete said task. What Modafinil doesn’t do is create inspiration or a plan. I have found repeatedly that I have my best Modafinil days when I already have everything mapped out.

It’s important not to take Modafinil and then be mindless. That is a recipe to drive yourself crazy with anxiety. Instead, write out the entire list of things you hope to accomplish on Modafinil the night before you are due to take it. Or at least in the morning before you actually pop that little pill.

#4: Dry Mouth

Sometimes, even if you’re keeping track of your hydration, you’ll get a dry mouth.

I’ve had days where I’ve chugged gallons of water and yet my mouth still feels like the Sahara Desert.

A few suggested solutions to this:

  • Chew gum
  • Eat something small—if you combine Modafinil with intermittent fasting, you’ll find that once you eat the edge is taken off a bit
  • Get a workout in—Modafinil workouts are incredibly focused. Getting a decent sweat on will help take some of the drug out of your system. Just make sure you stay hydrated!

As you can see, many of these side effects are revolve around dehydration. I would say that the dry mouth effect often comes from dehydration, though. That’s because Moda makes you so damn focused that sometimes you think you’re hydrated, but you’re not. Sure, maybe you’ve been drinking water all day, but then you realize you haven’t even stopped to breathe for an hour.

You can also set a timer on your phone or computer to remind you to chug that glass of water every hour!


These are some of the real basic Modafinil side effects, but they’re usually not something to worry about. Just remember to keep drinking, supplement with a bit of caffeine if needed, and to eat or workout if the side effects get too intense.

Typically, these actions have helped me get over any and all Modafinil side effects, so hopefully they work for you, too.

And remember—if you get a more serious one, talk to your doc. No excuses! Safety first, every time.

Let me know if you have questions regarding any of this in the comments below.

Until next time,

PS: The best online Modafinil store is here. Make sure to check them out for high-quality Modafinil that will steer you clear of these side effects.

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