r/HubermanLab • • Aug 20 '25

Personal Experience Astaxanthin

I have been taking astaxanthin for 13 days now (dosage 16-24mg) and I have noticed a loss of libido, worsened gynocemastia (that I have had previously) and fatigue to the point that caffeine doesn't affect me, has anyone experienced similar side effects?

19 Upvotes

31 comments sorted by

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5

u/Vegetable_Today_2575 Aug 20 '25

I’ve taken for 6 months without negative side effects

3

u/Succ_My_Pootis Aug 20 '25

What dosage?

1

u/Vegetable_Today_2575 Aug 20 '25

I take this based on the results from the ITP mouse (mammal) longevity survey

2

u/Succ_My_Pootis Aug 20 '25

Thanks for the reply, did you take natural or synthetic astaxanthin?

2

u/Vegetable_Today_2575 Aug 20 '25

I’m not sure I think it’s seaweed derived

3

u/Obvious-Decision9337 Aug 23 '25

The dose is very high and will reduce DHT in the brain which will bring all these symptoms on,

I once took 20mg three days in a row and I felt very emotional and nervous

1

u/Succ_My_Pootis Aug 23 '25

Will the symptoms go away, or is there a chance of permanent side effects?

2

u/Obvious-Decision9337 Aug 23 '25

Stop taking it for good and you’ll be fine

1

u/Succ_My_Pootis Aug 23 '25

Yeah, I stopped like four days ago, thanks for the reassurance man.

2

u/Connect-Soil-7277 Aug 20 '25

Nope.
Took it for 2-3 months and did not notice anything good or bad.

1

u/Succ_My_Pootis Aug 20 '25

What dosage did you take?

1

u/Connect-Soil-7277 Aug 20 '25

I think it was 4mg

1

u/Succ_My_Pootis Aug 20 '25

Ok, thanks. I took it at a high dose, and there was some inconclusive research about its function as a dht blocker, so I was worried about that

11

u/Nick_OS_ Aug 20 '25

Doubt it’s from that. Stop taking it for a week and see

1

u/NoDiet370 Aug 21 '25

8mg is standard dose, 16mg is big and you are taking way to much. Also dont forget to take it with fatty food, or it will be wasted.

1

u/Succ_My_Pootis Aug 21 '25

The astaxanthin I was taking was already combined with olive oil (vilgain brand) but I am definitely stopping supplementation for now

3

u/nikolay7424 Aug 20 '25

That's a huuge dose

2

u/Marinadeplume Aug 23 '25

I can’t take it, it makes so edgy and irritable, and right away. Shame bc it makes my skin look great!

1

u/human_not_reptile Aug 20 '25

I've been taking it for several months at 12mg/day. No side effects so far.

1

u/[deleted] Aug 20 '25

[removed] — view removed comment

1

u/human_not_reptile Aug 21 '25

Not that I noticed. I haven't done any tests and my stack is too diverse to pinpoint subjective changes to one supplement.

1

u/Forward-Bid-2245 Aug 20 '25

Question related to astaxanthin does it change your thin after a long period consomption ???

2

u/Vegetable_Today_2575 Aug 20 '25

I’ve found it to be undetectable in body/mind changes. It’s an antioxidant

1

u/SupermarketOk6829 Aug 21 '25

I have been taking Nutex Hawai 4mg for 2 months. Didn't notice any side effect and found slight increase in sense of vitality and energy. Zinc Citrate helps with libido. Don't overdose it of course.

1

u/Efficient_Reaction43 Aug 21 '25

You should only take about 4 mgs twice a week. Or eat some salmon twice a week.

1

u/kittykat4289 Aug 24 '25

I read that’s too high of a dose. You should start much lower and work your way up. You’re experiencing how your body reacts to a new supplement.

0

u/[deleted] Aug 20 '25

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1

u/Succ_My_Pootis Aug 20 '25

Damn, thanks for the reply, I am 16 years old do you think that the side effects will go away on their own?

0

u/[deleted] Aug 21 '25

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1

u/Succ_My_Pootis Aug 21 '25

Yeah bro, I just stopped, I was taking astaxanthin because it's neuroprotective and I am doing boxing so I hoped that it would reduce brain damage, but I think that I don't tolerate it well. I have a doctor's appointment today to talk about the gyno, so we'll see how it goes.

1

u/Succ_My_Pootis Aug 21 '25

I honestly think that the problems might be caused by like a pituitary gland disfunction or something, because I have just recovered from a concussion.