# Source Naturals, L-Tryptophan, 1,000 mg, 90 Tablets

> Price comparison in United Kingdom (GBP). Lowest price right now: **£94.28** at OnBuy.com plus £6.99 delivery, in stock. 2 offers from 1 shop, prices from £94.28 to £103.25. Checked 2026-10-11T05:21:38Z.

## Product
- Brand: Source Naturals
- Category: [Health & pharmacy](https://pricuro.com/uk/health-pharmacy.md) > [Vitamins & supplements](https://pricuro.com/uk/health-pharmacy/vitamins-supplements.md)
- EAN/GTIN: 0021078026105
- Page: https://pricuro.com/uk/p/source-naturals-l-tryptophan-1-000-mg-90-tablets-2893010
- Image: https://pricuro.com/img/2893010/800/source-naturals-l-tryptophan-1-000-mg-90-tablets.webp

## Offers (2, sorted by total price incl. delivery; used/refurbished last)

| # | Shop | Price | Delivery | Total | Availability | Condition | Buy |
|---|---|---|---|---|---|---|---|
| 1 | OnBuy.com | £94.28 | £6.99 | £101.27 | in stock | new | https://pricuro.com/go/7927664 |
| 2 | OnBuy.com | £103.25 | £1.98 | £105.23 | in stock | new | https://pricuro.com/go/7911296 |

## Price history (lowest price per day in United Kingdom, tracked since 2026-10-03, 9 days)

- Lowest price today: £94.28
- Last 30 days: lowest £84.99, highest £94.28, average £86.02
- All-time low on Pricuro: £84.99 (2026-10-03)
- Note: the history is still short, so it does not yet show whether today's price is a good one.

| Date | Lowest price |
|---|---|
| 2026-10-03 | £84.99 |
| 2026-10-04 | £84.99 |
| 2026-10-05 | £84.99 |
| 2026-10-06 | £84.99 |
| 2026-10-07 | £84.99 |
| 2026-10-08 | £84.99 |
| 2026-10-09 | £84.99 |
| 2026-10-10 | £84.99 |
| 2026-10-11 | £94.28 |

## Specifications


Description (from a shop): Dietary Supplement With Vitamin B-6 Mood, Relaxation, Sleep The essential amino acid L-tryptophan is the precursor for the synthesis of...

## Other variants

- [Source Naturals, L-Lysine, 1,000 mg, 100 Tablets](https://pricuro.com/uk/p/source-naturals-l-lysine-1-000-mg-100-tablets-2892572.md) – from £12.91
- [Source Naturals, L-Tryptophan with Coenzyme B-6, 500 mg, 60 Tablets](https://pricuro.com/uk/p/source-naturals-l-tryptophan-with-coenzyme-b-6-500-mg-60-tablets-2892911.md) – from £36.05
- [Source Naturals, Cat's Claw, 1,000 mg, 120 Tablets](https://pricuro.com/uk/p/source-naturals-cat-s-claw-1-000-mg-120-tablets-2892619.md) – from £43.99

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