this post was submitted on 19 Sep 2024
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Laittakaa meemejä tänne.

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[–] [email protected] 8 points 1 month ago* (last edited 1 month ago) (1 children)

So caffeine binds to adenosine receptors to block adenosine's drowsiness effect. Melatonin binds to melatonin receptors to regulate circadian rhythms. As far as how adenosine interacts with melatonin, no idea. I'm no biochemist and what I'm about to say could be 100% incorrect, but it seems that adenosine is involved in melatonin production?

So if it's true that adenosine leads to melatonin production, then I'm guessing that the adenosine-blocking effect of caffeine would be (partially?) negated by ingesting a melatonin supplement, especially in the massive doses that they sell.

~~My money is on SLEEP.~~ [I got it backwards!! See below replies.]

[–] [email protected] 4 points 1 month ago* (last edited 1 month ago) (1 children)

You’re on the right track, but funnily enough you got it switched around!

Research shows that melatonin binding leads to downstream release of adenosine, so if caffeine is blocking its binding action sleep is not on the way!

Here’s the paper I am referencing: https://doi.org/10.1016%2Fj.neuron.2015.02.016

“We find that melatonin promotes sleep downstream of the circadian clock as it is not required to initiate or maintain circadian rhythms. Additionally, we provide evidence that melatonin may induce sleep in part by promoting adenosine signaling, thus potentially linking circadian and homeostatic control of sleep”

[–] [email protected] 3 points 1 month ago

Ohh so melatonin leads to adenosine production, which caffeine blocks. so NO SLEEP is the smart bet. that makes a lot of sense, yeah! and when you think about it, coffee at night is gonna make for poor sleep no matter how much melatonin you take.

[–] [email protected] 56 points 1 month ago* (last edited 1 month ago) (4 children)

FYI, every melatonin supplement is way too high of a dose and is completely saturating your melatonin receptors, leading to tolerance and dependency.

Your body is not producing more than .5mg of melatonin naturally, so taking a 5mg supplement is far too much. And they sell 15-20mg too. If you can find 1mg that’s best; but what’s even better in the long run is not using it!

[–] [email protected] 3 points 1 month ago (1 children)

Bioavailability of oral melatonin is very poor though. IIRC it's about 10%, so that 5mg sounds about right.

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago)

That’s a great point! You’re definitely right. I’m seeing somewhere between 10-30% depending on patient population.

That being said, since we are naturally releasing .5mg, another .5mg is already double the normal concentration.

Another major point of consideration though would be formulation, as that is going to have a large effect on the half life of the dose in your system. Even if bioavailability is around physiological concentration at 5mg, the duration of the exposure being much longer than the time it takes for natural release would still have negative impact.

All this being said, definitely never a reason to go above 5mg

[–] [email protected] 4 points 1 month ago (1 children)

We buy 1mg. Once we couldn't find any so we bought 3mg and cut them in half. I found it interesting that OP used actual dosage for caffeine but not for melatonin. Three pills could be 3mg or 60+.

[–] [email protected] 2 points 1 month ago* (last edited 1 month ago)

That’s great! I really do think 1-1.5mg is the upper limit anyone should use, although it’s still higher than free melatonin concentration in your brain it’s a much more reasonable dose in comparison.

And I think most people who don’t understand melatonin go straight for the 20mg, so we’re probably talking 60+.

It really blows my mind that in this day and age there are no regulations or at the very least warnings or guidelines regarding melatonin supplements.

The gap in FDA policy for prescription drugs vs supplements is vast. Supplements have very few regulations and restrictions that create a lot of potential issues for the uninformed consumer.

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago) (1 children)

How is it with Quetiapin Sandoz? One pill is 25mg and i'm tired until noon, so i usually cut them in half.

[–] [email protected] 4 points 1 month ago (2 children)

Quetiapin is an antipsychotic medication, not the same as melatonin which is a naturally occurring hormone.

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago)

0x0 is correct. If it’s a prescribed medication then my comment is not relevant! I am referring to over the counter supplements

[–] [email protected] 25 points 1 month ago* (last edited 1 month ago) (1 children)

I know it's said over and over and over, but regular exercise!! There are certain types and times of exercise that are more effective, but generally speaking, exercise promotes serotonin conversion to melatonin and makes sleepy time easier.

[–] [email protected] 3 points 1 month ago (1 children)

Absolutely! Additionally, morning sun is another great way to regulate your circadian clock and let your body start its internal timer for melatonin release.

In the winter, I use a light box for seasonal affective disorder, and in addition to feeling much more energized, I find it helps me get more consistent sleep!

[–] [email protected] 2 points 1 month ago (1 children)

Interesting. I have SAD, I'll look into this, thanks!

[–] [email protected] 2 points 1 month ago

Please do! Research has shown that as little as 20 minutes of light therapy in the morning can have positive effects

[–] [email protected] 16 points 1 month ago (3 children)
[–] [email protected] 0 points 1 month ago (1 children)

Lmao how on earth is this dangerous? Or does this classify as 'mixing uppers and downers' for you? Because it definitely isn't, melatonin is barely more psychoactive than a sugar pill

[–] [email protected] 1 points 1 month ago (1 children)

My understanding of melantonin is its something you wanna regulate and spread out, like maybe once a week. When I took it in combination with a zinc pill, man I would be in walking dream mode before I even got to my bunk.

I did some reading at the time about the zinc and melotonin, and I could be confusing the mexhanism and effects of the two.

Or I might be entirely wrong and I thank you, and you other guys for calling me out.

I am too lazy to read up on this right now so while I would be wary of combining the two, it might be ok and I might just be wrong .

I have had a long day and gonna zonk now without any supplement heh. Thanks for replying, I prefer to be corrected and its always fun learning I have been wrong my entire life about something, heh

[–] [email protected] 1 points 1 month ago

I have only heard of melatonin for jet lag and changing shift work

I don't believe it's good for sleep in general given those two uses are about messing with circadian cycles and that's not going to help someone without otherwise good sleep habits

[–] [email protected] 0 points 1 month ago (1 children)

Not any more dangerous than taking 700mg of caffeine on its own

[–] [email protected] 1 points 1 month ago* (last edited 1 month ago)

You mean in a single dose? I'll have ~~700mg~~ 1000mg over three hours often

[–] [email protected] 6 points 1 month ago

So is not treating my ADHD in a healthy manner but I'm not fixing that either

[–] [email protected] -2 points 1 month ago (1 children)

Melatonin does not make you sleepy. It just helps you to stay asleep.

[–] [email protected] 1 points 1 month ago (1 children)
[–] [email protected] 1 points 1 month ago

Where, specifically, in that article am I wrong?

[–] [email protected] 6 points 1 month ago (1 children)

I feel like this is just a lower-stakes version of "RedBull & vodka." If that's true, @[email protected], then this is a recipe for a bad hangover.

[–] [email protected] 3 points 1 month ago (1 children)

I'd say higher stakes from the 700mg alone. RedBull has 80mg of caffeine.

[–] [email protected] -3 points 1 month ago

700mg is nothing, not even twice the FDA recommendation

[–] [email protected] 12 points 1 month ago
[–] [email protected] 3 points 1 month ago

If I need to sleep I take a half dose of Nyquil. That shit knocks me out. And nice side benefit of clearing my sinuses for a few days.

[–] [email protected] 21 points 1 month ago* (last edited 1 month ago) (2 children)

There are no winners here.

Source: Tried for years to overpower the insomnia from my ADHD meds with melatonin, weed, CBD:THC edibles, booze, kava, diphenhydramine, etc. before finally going cold turkey on my adderall. With enough stimulants, it doesn't matter how much melatonin you take; you're not gonna have a good night's sleep edit: but you'll also be too tired to be productive or to do anything fun

[–] [email protected] 3 points 1 month ago* (last edited 1 month ago) (1 children)

I have no issues sleeping on 120mg of Vyvanse, I even find it easier to sleep.

Are you sure you're not misdiagnosed?

[–] [email protected] 2 points 1 month ago* (last edited 1 month ago)

Certainly possible, but I'm sort of a textbook mild case of ADHD, just with the side case of insomnia being fairly prominent (which was true even before medication). Everybody reacts to medication in different ways, so I've just found I have to rely on coping strategies more than medication for my case. It's not a big deal and I'm at a point in my life where I can manage my ADHD symptoms in a way that doesn't affect my life too much. So for me, the side effects of the medication exacerbate my preexisting insomnia to the point that the drawbacks of adderall outweigh the benefits for my particular brand of ADHD.

[–] [email protected] 2 points 1 month ago (1 children)

Did you take slow release aderall? My aderall is worn off before I go to sleep and I actually sleep better since I take aderall because I spend more energy during the day.

[–] [email protected] 2 points 1 month ago (1 children)

No it's IR, but taken 20 mg in the morning and then 10 mg in the early afternoon. It just always wound up with the physical effects lingering much longer than the mental effects, so if I tried skipping the afternoon dose, then I'd wind up totally scattered and useless from about 3PM on.

The XR once in the morning worked a little better, but for whatever reason didn't really help the same way and I still had the insomnia from it.

[–] [email protected] 2 points 1 month ago

Ah that’s unfortunate. The side effects are pretty bad especially with a high dose of

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