Dl-Phenylalanine
People mainly take Dl-Phenylalanine for mood, energy. Based on 21 first-hand reports and 0 meta-analyses & systematic reviews in the medical literature. Ranked #412 of 1,974 overall.
Of reports that state an outcome, 74% are positive.
What Dl-Phenylalanine does, according to users
Of the people who reported each effect, the share who said it got better.
3 more with fewer than 3 reports
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
No randomized controlled trials in humans found on PubMed. The grade measures how much human research exists — read the conclusions below for what it found.
Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“I've been taking Dl phenylalanine as it (supposedly) helps with depression and pain for the last 3 weeks”
“long term supplementation of phenylalanine and tyrosine lead to overproduction of norepinephrine and downregulation of dopamine, leaving you much worse off than if you never supplemented at all.”
“20+ years, if you include the good old days when we started discovering the effects of L-Glutamine, L-Tyrosine and DL-Phenylalanine.”
“Definitely picking up some DLPA when these come out!”
“I'm having amazing success restoring dopamine after long term marijuana abuse with DL Phenylalanine and Citicoline.”
Top discussions (5)
- How I hacked caffeine (not with L-Theanine) ↗
- Ever think this is a big waste of time/money? ↗
- Coupling D-Phenylalanine and N-Acetyl-L-Cysteine Hypothesizing Balancing Endorphinergic and Glutaminergic Systems to Treat and Prevent Relapse to Reward Deficiency Behaviors: Coupling D-Phenylalanine and N-Acetyl-L-Cysteine (NAC) as a Novel Therapeutic Modality ↗
- Here is my "I'm all our of my adhd medication" stack. Please provide constructive criticism if you have the inclination ↗
- Cognance — 3.5 hours in ↗
Other options for mood
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate