NOW Foods

5-HTP 100mg, 60 Capsules

NOW Foods 5-HTP 100mg delivers 5-hydroxytryptophan, a naturally occurring amino acid precursor to serotonin, sourced from Griffonia simplicifolia seed extract.

May be a fit for

  • Adults seeking 5-HTP to support healthy serotonin levels
  • Individuals looking to maintain a positive mood with 5-HTP
  • Those using 5-HTP to support restful, quality sleep
$16.99

30-day money-back guarantee
Save together with Wellness Circles

Invite friends or family to a Wellness Circle. Your group can unlock savings together. See current tiers and terms before joining.

Explore Wellness Circles
CapsulesFormat
60 CapsulesPack size
The essentials

A closer look.

NOW Foods 5-HTP 100mg delivers 5-hydroxytryptophan, a naturally occurring amino acid precursor to serotonin, sourced from Griffonia simplicifolia seed extract. It supports healthy mood balance, relaxation, and restful sleep patterns for adults looking to maintain emotional well-being.

Why It's Worth Considering: Each capsule provides a straightforward 100mg dose without unnecessary additives, from a brand with a long track record in quality-controlled manufacturing and third-party testing.

Inside the formula

Product details

Who it may suit

May be a fit for

  • Adults seeking 5-HTP to support healthy serotonin levels
  • Individuals looking to maintain a positive mood with 5-HTP
  • Those using 5-HTP to support restful, quality sleep
  • Adults seeking appetite management support via serotonin precursors

Considerations

  • Known allergy to any ingredient (check label)
  • Currently pregnant or breastfeeding (consult healthcare provider)
  • Taking prescription medications (check for interactions)
  • Under 18 years of age (unless recommended by pediatrician)
From across the web

Real reviews. A wider perspective.

Customer reviews, social conversations and expert insights, with every source in view.

Marketplaces & brand websites
Amazon, iHerb and direct brand reviews
Social & community
Reddit, X, Instagram and TikTok
Video & creators
YouTube and creator perspectives

Coverage varies by product and brand.

Good to know

A few useful answers.

Research & further reading

More category questions

How should I store this supplement?

Store in a cool, dry place away from direct sunlight. Most supplements are stable at room temperature (59-77°F). Keep the bottle sealed between uses. Check the label for any specific storage requirements — some probiotics and oils require refrigeration.

Can I take this with other supplements?

Most supplements can be taken together safely. However, some minerals compete for absorption (zinc and iron, calcium and magnesium) and should be taken at different times of day. If you're taking prescription medications, consult your healthcare provider about potential interactions.

How long should I take this supplement?

Most supplements benefit from consistent daily use over 2-3 months to achieve full effect. Some (like vitamins and minerals) can be taken indefinitely as part of a daily routine. Others (like specific herbs) may benefit from cycling. Follow the product's recommended protocol or consult a practitioner.

When is the best time to take this?

Fat-soluble supplements (vitamins A, D, E, K, omega-3, CoQ10) should be taken with a meal containing fat. Water-soluble supplements (B vitamins, vitamin C) can be taken anytime. Minerals are generally best absorbed with food. Probiotics should be taken with or just before a meal. Check the product label for specific timing recommendations.

How do I know if this supplement is working?

Track your specific health goals — energy levels, sleep quality, joint comfort, digestion, mood, etc. Most supplements take 2-8 weeks for noticeable effects. For objective measurement, baseline lab tests before starting (and repeat at 3 months) provide definitive evidence. The Gabriel Score incorporates clinical evidence for expected outcomes.

Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.

NOW Foods - 5-HTP 100mg, 60 Capsules