High-Dose D-Phenylalanine Supplements
4 products above 149 mg
4 supplements contain high-dose D-Phenylalanine (above 149 mg). The highest dosage product is D-Phenylalanine 500 mg at 500 mg.
Low Dose (3)High Dose (4)
High-Dose Products (sorted by dosage)
| Product | Brand | Dosage | % DV |
|---|---|---|---|
| D-Phenylalanine 500 mg | Doctor's Best | 500 mg | — |
| Best D-Phenylalaninediscontinued | Doctor's Best | 500 mg | — |
| Neuro-Natural Serenity | Xtendlife | 149 mg | — |
| Neuro-Natural General | Xtendlife | 149 mg | — |
Frequently Asked Questions
What is considered high-dose D-Phenylalanine?
Based on 15 products in the NIH DSLD database, high-dose D-Phenylalanine supplements contain 149+ mg.
Is high-dose D-Phenylalanine safe?
This site presents supplement label data only. Consult a healthcare professional before taking high doses of any supplement, including D-Phenylalanine.