Typical dose
0.5 mg to 5 mg taken sublingually 30-60 minutes...
Oral
Oral safety: very low
About this supplement
Sublingual melatonin is a synthetic or natural form of the hormone melatonin (N-acetyl-5-methoxytryptamine) formulated for administration under the tongue. This route bypasses first-pass metabolism in the liver, allowing for faster absorption directly into the bloodstream via the sublingual mucosa. It is typically used for its rapid onset of action in promoting sleep initiation and regulating circadian rhythms. The sublingual form often comes as a fast-dissolving tablet, spray, or liquid drop, designed to enhance bioavailability compared to standard oral tablets.
How much to take
- Typical amount
- 0.5 mg to 5 mg taken sublingually 30-60 minutes before bedtime.
- Suggested range
- 0.5-10 mg daily
Potential benefits
Benefits linked to this supplement form:
Things to watch for
Possible side effects linked to this form:
Health goals
Needs and goals this form may help with:
Other forms of Melatonin
Compare absorption and active amounts with sibling forms:
Extended Release Melatonin
Extended-Release/Sustained-Release Melatonin
Extended-release formulation for sleep maintenance. Take 30-60 minutes before be...
Immediate-Release Melatonin
For occasional sleeplessness; helps reduce time to fall asleep. Use 30-60 minute...
Melatonin with Receptor-Specific Analogs (e.g., Ramelteon)
Combination sleep support targeting melatonin receptors; consult healthcare prov...
Technical details â–¼
Chemical ID (CAS)
73-31-4
Formula
C13H16N2O2
Physical properties
Typically a white to off-white crystalline powder. In sublingual forms, it is formulated into rapidly dissolving tablets, sprays, or solutions. Soluble in ethanol and DMSO, slightly soluble in water. Melatonin is light-sensitive.
How it’s made
Most commercial melatonin is synthesized chemically via acetylation of 5-methoxytryptamine or from serotonin derivatives. Sublingual formulations are produced by blending melatonin with excipients like mannitol, cellulose, or flavoring agents to create fast-dissolving tablets, sprays, or liquid drops suitable for sublingual administration.