B12 and libido

I take 5000 mcg vit B12 twice weekly and my libido remains at zero so generalizations that it "works for libido" are far fetched. It may do something if you have a deficiency.

I absorb it too well in the methylcobalamin form, liquid or tablets - it takes me twice above the normal range, if I take it every day. I suspect that dose and form will raise the blood level of almost everybody, so injections are not necessary.
 
I can’t handle more than 250 mcg B12 supplements without sides. Any more than 250 mcg B12 and it dries out my skin.

B12 @ 250 mcg puts me at midrange and I don’t feel any different than if it’s near the bottom of the ranges.
 
Yes, I find the same thing too. I do twice weekly b12 injections and that makes a huge difference in my energy levels. I've tried supplementing with all different forms of b12, but even at higher oral dosages (5,000mcg/day) is still feel a large "boost" when I inject b12.

I also like Rhodiola, that also gives a noticeable energy boost.

Teacrine worked for many years, and I still like my trusty caffeine
 
Sorry iPhone typo I meant cialis
I am considering beginning the Cialis taken daily rather than the dose just before sex. I am looking for more spontaneity as my girl likes to see wood in the morning and maybe a quickie.... any experience with the daily Cialis? I use trimix injections for hard sex and they are epic...I can last 60 plus minutes no BS.
 
I have taken 5mg tadalafil daily for a few years now. But I take it for BPH. I find it works better for me for this issue than Flomax. I also take 4mg of terazosin. Of course the side effects are an added bonus! I find the difference between tadalafil and sildenafil is that tadalafil needs continual sexual stimulation to remain erect. Sildenafil does not seem to need constant stimulation to be effective. I have more adverse side effects on sildenafil than I do tadalafil. With sildenafil I get a low grade headache and a stuffy nose... like when I have a cold. Therefore, for me, tadalafil is much better than sildenafil.
 
My libido has been zero for a decade, before any temazepam. Again, refrain commenting on drug you have zero experience with.
 
I am considering beginning the Cialis taken daily rather than the dose just before sex. I am looking for more spontaneity as my girl likes to see wood in the morning and maybe a quickie.... any experience with the daily Cialis? I use trimix injections for hard sex and they are epic...I can last 60 plus minutes no BS.
I take cialis 5mg daily work good for morning wood. B12 help but after time I realized it’s not sustainable.
 
After reading every post in this thread I decided to try 5,000mcg of B-12 daily since the raging libido I have enjoyed for the past 4 years while being on Test C crashed 6 weeks ago. As hopeful as I was that this would help my problem, after 10 days it unfortunately has not. I also decided to check my Prolactin levels as high Prolactin can cause these issues. The results came back and my Prolactin is in mid-range. I am currently waiting for the results of my DHT as my research has led me to understand that low DHT can also cause these problems. I am almost hoping that my DHT level is low so that I may finally at last have an answer as to why my raging libido suddenly crashed. Nonetheless, I know that it's most likely not a B-12 issue.
 

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Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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