Your Cart is Empty
But it doesn't have to be.
Continue Shopping.
Added to Cart
Cart Total:
Customers Also Bought:

Twinlab, L-Histidine, 500 mg, 60 Tablets (Discontinued Item)


Out of Stock - Discontinued
  • Shipping Weight: 0.84 lbs (0.38 kg)
  • Product Code: TWL-00137
  • UPC Code: 027434001373
  • Package Quantity: 60 Tablets
  • Dimensions: 4.4 x 2.4 x 2.4 in, 0.5 lbs (0.23 kg)
Product Overview


  • Free Form Amino Acid
  • Dietary Supplement

L-Histidine is an amino acid.

Packaged in a glass bottle for maximum stability, quality and freshness.

Suggested Use

Take one tablet daily or as directed.

Other Ingredients

Dicalcium phosphate, cellulose, vegetable based stearic acid, povidone, magnesium stearate, titanium dioxide, silica.

No sugars, starch, flavors, colors or preservatives.

No corn, soy, yeast, wheat or milk derivatives.


Keep tightly closed in a cool, dry place.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Tablet % Daily Value
Calcium 162 mg 16%
Phosphorus 127 mg 13%
L-Histidine 500 mg
­†Daily Value not established.
iHerb Customer Reviews

Gave me headaches

Posted by 5724840933078518186 on Apr 12, 2013

I was recommended these for low histamine, but taking one in am on empty stomach gave me headaches & made me feel worse. I stopped, but I may go back on them again, starting at a very low dose by opening the capsule and using only a little.

Verified Purchase

Was this review helpful to you?

Twinlab, L-Histidine

Posted by Reviewer2167095 on Aug 09, 2012

Excellent, very happy.

Verified Purchase

Was this review helpful to you?


Posted by Reviewer1230830 on Feb 13, 2012

Brilliant, very good

Verified Purchase

Was this review helpful to you?

helps achieve orgasm if you are on anti-depressant like Prozac

Posted by Reviewer1078080 on Oct 29, 2011

I take Prozac which is a fantastic antidepressant but the side effect is that although I get erection, I cannot achieve orgasm, probably due to low levels of histamine. I take one tablet of L-Histidine 30 mins before sex and the problem is resolved. For boost in the erection department, I combine it with a few capsules of ginkgo biloba which seems to help slightly with erection and somehow mitigate the anorgasmia side effect of prozac. The main help for achieving orgasm is L-Histidine though not the ginkgo.

Verified Purchase

Was this review helpful to you?

One of the best I've tried

Posted by Reviewer2348445 on Apr 19, 2011

Helps digestion better than enzymes and probiotics combined. Better for allergies than zyrtec (concider combining with NAC + vit. C). In addition, raised libido and calmer mind.

Verified Purchase

Was this review helpful to you?