A 28-year-old male asked:
Disclaimer

what is l-tyrosine? is it a good supplement to improve alertness?

3 doctor answers
Dr. James Rochester
25 years experience Family Medicine
Maybe: A few studies have shown that if you are under significant stress it may help alertness. Otherwise no. It is not an essential amino acid. Your body can make it from another amino acid, so unlikely you are deficient in it. Hope this was helpful. Thanks for using Healthtap. Dr R
Answered on May 17, 2019
Dr. Richard Bensinger
51 years experience Ophthalmology
Amino acid: This is a non-essential amino acid which your body makes and gets plenty of. I know of no connection between this and alertness. Sounds like a marketing pitch to me.
Answered on May 17, 2019
1
1 comment
1
1 thank
Dr. Julian Raffoul
Specializes in General Practice
I agree with Dr. Bensinger. For more alertness, try getting a good 8hrs of sleep per night, exercise 30min daily, stay hydrated, eat a healthy diet, and enjoy laughter.
Jul 23, 2015
Dr. Randy Baker
39 years experience Holistic Medicine
Amino acid,maybe but: L-tyrosine is an amino acid. Our bodies use it to synthesize the neurotransmitters epinephrine, norepinephrine & dopamine. It's also necessary to make thyroid hormone. If one is deficient in L-tyrosine taking it could increase production of those,likely improving alertness, but few are deficient & it's not clear if taking it will raise levels if you're not deficient.See http://tinyurl.com/y8oy9k4
Answered on May 17, 2019

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month

Related questions:

A 32-year-old female asked:
Dr. Randy Baker
39 years experience Holistic Medicine
Yes: It is likely your insomnia is due to l-tyrosine, as explained in my other answer to you. In the future it would be best to not take in the evening (un ... Read More
1
1 thank
A 22-year-old male asked:
Dr. Karen Koffler
31 years experience Internal Medicine
Depends!: Both tyrosine and glutamine can be good for the body. Tyrosine is used to form the neurotransmitters dopamine and norepinephrine and glutamine is used ... Read More
1
1 thank
A 26-year-old male asked:
Dr. Randy Baker
39 years experience Holistic Medicine
Many good options: B vitamins may help (esp. B12 if you're deficient). Phosphatidylserine, acetyl-l-carnitine, tyrosine, bacopa, vinpocetine, ashwagandha, gingko, rhodio ... Read More
1
1 thank
A 26-year-old male asked:
Dr. John Gaffney
24 years experience Psychiatry
No way to tell : Unfortunately, dietary supplements are regulated as foods (as opposed to drugs). As such, they are not required to undergo the same testing (or prove ... Read More
1
1 thank

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Free
Talk to a doctor
Unlimited visits
$10/month