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SeroSyn - L-Theanine Supplement - Supports a Sense of Restfulness - 5-HTP Supplement - Non-GMO and Gluten-Free - 90 Capsules
Prices as of September 27, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.
Price history tracked at Macy's price tracker
14-day low
$94.95$94.95
Sep 14 · Macy'sSep 14 on Macy's
Best price
$94.95$94.95
−0% vs high0% below 14-day high
14-day high
$94.95$94.95
All storesAcross all tracked stores
$95$95$95
Sep 14Sep 27
- Macy's
About this product
Metagenics SeroSyn is a dietary supplement formulated to support a sense of calm and restfulness. It contains L-theanine, an amino acid known for promoting relaxation, and 5-HTP, which supports serotonin pathways in the body. The formula also includes high-potency B vitamins—vitamin B6, folate, and vitamin B12—as methylcobalamin to aid in nutrient metabolism and nervous system function. Designed for adults 18 and older, it is taken as one capsule three times daily with food. The supplement is non-GMO, gluten-free, and suitable for vegetarians. It is manufactured in the USA and developed by a doctor-recommended brand focused on clinical integrity and wellness.
- L-theanine and 5-HTP blend
- high-potency B vitamins
- non-GMO and gluten-free
- vegetarian-friendly
- made in USA
- 3 capsules daily with food
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