Nutricost sells 5-HTP in two strengths at Supps247: 5-HTP 100 mg in a 30 capsule bottle, and 5-HTP 200 mg in 30 and 60 count bottles. 5-HTP (5-hydroxytryptophan) is a compound the body makes from tryptophan and uses to make serotonin.
At a glance
| Strength | Size |
|---|---|
| 100 mg | 30 capsules |
| 200 mg | 30 or 60 capsules |
What to know
5-HTP has been studied for sleep and mood, but most trials are small and short. If you use it, the lower strength is the sensible place to start. It should not replace treatment from your doctor.
Who should check first
- Taking antidepressants: do not take 5-HTP with SSRIs, SNRIs, MAOIs or tricyclic antidepressants unless your doctor tells you to. Combining them can cause serotonin syndrome, which is a medical emergency.
- Other serotonin medicines: the same applies to tramadol, triptan migraine medicines, dextromethorphan cough medicines and St John's wort.
- Pregnant, breastfeeding or under 18: do not use it.
- Low mood or poor sleep that lasts: see your GP.
How to use and where to buy
Follow the label and do not exceed it. Get medical help straight away if you notice agitation, a racing heart, sweating, shaking or a high temperature. Shop Nutricost 5-HTP online at Supps247 with Australia-wide delivery or click and collect, or browse more from Nutricost.
Checked against the product listings on 12 November 2026. Always read the label and follow the directions. General information, not medical advice.
