Glycine 1000 mg by Thorne

If “how to use glycine for sleep” is your question, this fits light sleepers who want a non-groggy way to fall asleep faster and feel more rested. It also suits high‑stress professionals who want a calmer evening wind‑down, shift workers resetting their schedule, and athletes seeking connective‑tissue recovery between sessions. Diets low in collagen‑rich foods can run short on glycine, so plant‑forward eaters often notice more from a glycine supplement.

Glycine calms the nervous system by acting as an inhibitory neurotransmitter (a signal that turns down neural firing), and it also helps cool core body temperature by opening up small blood vessels in the skin, both of which ease sleep onset. At the same time, it’s a required co‑factor at the NMDA receptor (a learning and memory switch), which explains why grogginess is uncommon. Glycine also supplies a building block for glutathione (your cells’ main antioxidant) and for collagen, the protein that makes up tendons, ligaments, and skin.

Thorne Glycine is flexible: the label allows two capsules one to three times daily. For sleep, most adults use about 3 grams 30–60 minutes before bed; for daytime calm, split smaller doses through the afternoon and evening. Take with or without food. Start low for a few days, then increase to effect to limit stomach upset. Connective‑tissue and recovery benefits build with daily use over 4–8 weeks.

If you use antipsychotic medication such as clozapine, talk to your prescriber before adding glycine, as high doses have been studied alongside these drugs. People with significant kidney or liver disease should use clinician guidance. If you treat diabetes, glycine can modestly affect post‑meal glucose; monitor your Fasting Glucose or HbA1c with any dose change. Pregnancy and breastfeeding: data are limited, so avoid unless your clinician recommends it.