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Dietary supplement

Glycine (Free Form) Ingredients & Drug Interactions

by Herbadiet

Glycine (Free Form) label
See full label image
Capsule Category: Amino Acid/protein
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Glycine (Free Form) against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Glycine (Free Form) is a dietary supplement by Herbadiet with 1 active ingredient. Its ingredients are commonly taken for sleep quality and insomnia, relaxation, cognitive function.Based on those ingredients, 1 medication has a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Glycine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Glycine (Free Form) by Herbadiet

Ask about any prescription or over-the-counter medication and we check it for interactions with Glycine (Free Form) by Herbadiet — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Glycine (Free Form) by Herbadiet

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 30, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: glycine, a simple amino acid. The capsule itself is made from vegetable cellulose, an inert shell with no active role.

Does it work?

Not established
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Glycine's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: promotes restful sleep and supports nervous system.
  • We looked for evidence on: Insomnia, Cognitive function, Sleep quality, Relaxation.
  • The closest evidence on file: Glycine is rated "Insufficient Reliable Evidence To Rate" for Cognitive function (Natural Medicines).
  • Also on file: Glycine is rated "Insufficient Reliable Evidence To Rate" for Insomnia.

Glycine is possibly effective for schizophrenia based on available evidence. For other uses listed—including 3-phosphoglycerate dehydrogenase (3-PGDH) deficiency, attention deficit-hyperactivity disorder (ADHD), benign prostatic hyperplasia (BPH), and cystic fibrosis—there isn't enough reliable evidence in the data we hold to rate how well it works.

The evidence, ingredient by ingredient Glycine

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Glycine is generally well tolerated at typical doses, though long-term safety data are limited. Mild sedation, irritability, insomnia, fatigue, memory impairment, headache, and sensory issues have been reported rarely and tend to resolve quickly if you stop taking it.

Soft stools, nausea, vomiting, upper GI discomfort, and dry mouth have also occurred rarely, with similar resolution after discontinuation. There isn't enough reliable safety data on glycine during pregnancy or while breastfeeding to know whether it's safe.

Talk with your doctor or pharmacist before using this supplement if you're pregnant, planning to become pregnant, or breastfeeding.

Side effects, ingredient by ingredient Glycine

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Glycine.
  • The most serious interaction on file is rated Moderate.
  • For scale: 1 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

If you take clozapine (Clozaril) for schizophrenia, check with your doctor or pharmacist before starting this product—glycine may decrease its effectiveness.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no established evidence rating for its marketed use. Moderate medication interactions have been identified, and safety information is well characterized.

Glycine may help with schizophrenia symptoms, though evidence is limited. If you take clozapine for schizophrenia, check with your doctor or pharmacist before starting this—the supplement might actually reduce how well your medication works.

For other uses, evidence isn't established yet. Talk it over with your healthcare provider to decide if this is right for you.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Nov 19, 2021.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Glycine (Free Form), straight from the product label.

Brand Herbadiet
Barcode (UPC) 880401518201
Net contents 60 V-Cap(s)
Market status On market
Date entered into DSLD Nov 19, 2021
DSLD ID 257587
Product type Amino Acid/protein
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Dairy Free
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Glycine (Free Form) by Herbadiet, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
30
UPC/BARCODE
880401518201
IngredientAmount% DV
Glycine1000 mg--

Other ingredients: Vegetable Cellulose Shell

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Herbadiet Glycine is a scientifically formulated premium supplement optimized for achieving faster results. This powerful amino acid helps to promote glycogen storage. Encapsulating this goodness in our quick release, easy to swallow vegan capsules, guarantees you a premium quality nutritional supplement.

Formulation

Promotes restful sleep supports nervous system Builds lean muscle mass

Natural color variation may occur in this product

100% pure Energy production

Lab tested

Non-GMO

Free Of preservatives, binders, gluten, artificial ingredients, dairy, soy, wheat, yeast

Every batch 3rd party lab tested

FDA Disclaimer Statement

These statements have not been evaluated by FDA. This product is not intended to diagnose, treat, cure or prevent any disease.

Precautions

Do not use if seal under the cap is broken or missing. Dietary supplement shouldn't be used as a substitute for a varied diet

Caution: If you are pregnant, breast feeding, or taking medications, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Not for medicinal use

Storage

Store in cool, dry place

Seals/Symbols

fssai Lic. No.: 20817018000147 Vcaps Plus GMP Good Manufacturing Practice Quality Product

General Statements

1% for the planet

License Number: 10018064001315

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Directions for Use: Take 2 capsules twice a day, on an empty stomach or as directed by your physician

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Glycine (Free Form) by Herbadiet label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Glycine (Free Form) label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Glycine (Free Form) by Herbadiet

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Glycine

Interacts with
1 drug
1000 mg per serving

Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep q...

Glycine monograph & interactions

Other (inactive) ingredients: Vegetable Cellulose Shell. These complete the product’s ingredient list but are not active constituents.

Interaction report

Glycine (Free Form) by Herbadiet Drug Interactions

Want to check YOUR meds against Glycine (Free Form)?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
1Drugs
1 Moderate

Ingredients driving the most interactions

Glycine 1

Individual Drug Interactions

The ingredients in Glycine (Free Form) interact with 1 drug. Click any drug to see the details.

1 of the 1 ingredient in Glycine (Free Form) interact with drugs. Each result below shows which ingredient is responsible. Glycine

Each ingredient & the kinds of drugs it affects

For each ingredient in Glycine (Free Form) with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Glycine1 drug type · 1 drug

Clozapine (Clozaril)

Theoretically, glycine might decrease the effectiveness of clozapine.
One small clinical study in patients with schizophrenia shows that adding glycine to clozapine therapy worsens symptoms of schizophrenia when compared with clozapine alone. The mechanism of this interaction is unclear.

Likelihood Probable Evidence B
Glycine full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Glycine (Free Form), from the product label.

Herbadiet

See all Herbadiet products
Name
Arkure Health Care
City
Haryana
State
India
Web Address
www.herbadiet.in
Pharmacist Counseling Corner

Glycine (Free Form) by Herbadiet: Common Questions

Does Glycine (Free Form) by Herbadiet interact with any medications?
Yes. Based on its ingredients, Glycine (Free Form) has a known interaction with 1 medication. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Glycine (Free Form) contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Is glycine safe to take while pregnant or breastfeeding?
There isn't enough reliable safety data to know either way. Talk with your doctor or pharmacist before using this supplement if you're pregnant, planning to become pregnant, or breastfeeding so you can make an informed decision together.
What side effects might I experience?
Most people tolerate glycine well. Rarely, mild sedation, irritability, insomnia, fatigue, memory problems, headache, nausea, soft stools, or dry mouth have been reported—and these typically resolve quickly if you stop taking it.
Does glycine actually work for schizophrenia?
Evidence suggests it may help, though the research is limited. That said, if you take clozapine for schizophrenia, adding glycine could actually worsen your symptoms, so you'll want to discuss this with your doctor before trying it.
Can I take this long-term?
Long-term safety data are limited, so there isn't enough information yet to say how safe it is over months or years. Your doctor or pharmacist can help you weigh the potential benefits against what we don't yet know about long-term use.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Glycine (Free Form) is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Glycine (Free Form) label
Go deeper

The Full Monographs Behind Glycine (Free Form)’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Glycine

Interacts with 1 drug

Glycine is a non-essential amino acid your body makes on its own and that also appears in protein-rich foods. It is most studied for improving sleep quality, where early research is promisin...

Read the full Glycine monograph →
Sources

Sources & How We Checked

Glycine (Free Form)'s label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 5 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Glycine 5 references
  1. Heresco-Levy U, Javitt DC, Ermilov M, et al. Efficacy of high-dose glycine in the treatment of enduring negative symptoms of schizophrenia. Arch Gen Psychiatry 1999;56:29-36.. PubMed
  2. Potkin SG, Jin Y, Bunney BG, Costa J, Gulasekaram B. Effect of clozapine and adjunctive high-dose glycine in treatment-resistant schizophrenia. Am J Psychiatry 1999;156:145-7.. PubMed
  3. Gusev EI, Skvortsova VI, Dambinova SA, et al. Neuroprotective effects of glycine for therapy of acute ischaemic stroke. Cerebrovasc Dis 2000;10:49-60. PubMed
  4. Inagawa K, Kawai N, Ono K, Sukegawa E, Tsubuku S, Takahashi M. Assessment of acute adverse effects of glycine ingestion at a high dose in human volunteers. Seikatsu Eisei. 2006; 50:27-32.
  5. Woods SW, Walsh BC, Hawkins KA, Miller TJ, Saksa JR, D'Souza DC, Pearlson GD, Javitt DC, McGlashan TH, Krystal JH. Glycine treatment of the risk syndrome for psychosis: report of two pilot studies. Eur Neuropsychopharmacol. 2013 Aug;23(8):931-40. PubMed

See these in context on the Glycine monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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