1. HappyCaps Euphor-E — 4 pieces
Four Euphor-E capsules — the happiest cap in the range, and previously sold as Smile-E. Four stars for energy, four for relaxation, and a reputation for making people want to grin.
The ingredient doing the work is kanna extract 10X at 110 mg. Kanna is Sceletium tortuosum, a South African succulent used traditionally by Khoisan peoples, whose main alkaloid mesembrine acts as a serotonin reuptake inhibitor. Guarana, theobromine and synephrine make up the stimulant side.
That serotonergic mechanism is real and it comes with a real interaction. Section 3 covers it properly, because it is the single most important thing on this page.
2. Specifications
| Specification | Detail |
|---|---|
| Product name | HappyCaps Euphor-E – 4 pieces |
| Contents | 4 capsules |
| Ingredients | Guarana (30% caffeine) 150 mg, kanna extract 10X 110 mg, theobromine 50 mg, synephrine 20 mg, E959, magnesium stearate, calcium dioxide, Hydroxypropylmethylcellulose (vegetarian capsule) |
| Price | €10.95 |
| Capsule | Hydroxypropylmethylcellulose — vegetarian |
| Usage | Take 1 or 2 capsules 45 minutes before the desired effect, with plenty of water |
| Maximum | 2 capsules per 24 hours |
| Storage | Cool, dry, out of direct light |
| Age restriction | 18+ only |
2.1 Manufacturer’s profile
| Profile | Rating |
|---|---|
| Energy | ★★★★★ |
| Concentration | ★★★★★ |
| Relaxation | ★★★★★ |
| Love | ★★★★★ |
| Psychedelic | ★★★★★ |
3. Kanna
Four actives, and one of them needs more than a line in a table:
| Ingredient | What it is |
|---|---|
| Kanna extract 10X 110 mg | Sceletium tortuosum. Its characterised alkaloid, mesembrine, is a serotonin reuptake inhibitor — a specific pharmacological mechanism, and the source of the euphoric, sociable character people describe. |
| Guarana (30% caffeine) 150 mg | The caffeine source, standardised at 30%, so roughly 45 mg of caffeine per capsule from this ingredient. |
| Theobromine 50 mg | The cocoa alkaloid. Mild, slow and long-acting. |
| Synephrine 20 mg | The active stimulant of bitter orange. It raises heart rate and blood pressure, which is why the cardiovascular caution matters here. |
| E959, magnesium stearate, calcium dioxide | A citrus-derived sweetener and two processing aids. |
3.1 The interaction that matters
Because mesembrine inhibits serotonin reuptake, this capsule must not be combined with antidepressants — SSRIs, SNRIs — or with MAO inhibitors, or with anything else serotonergic. Stacking two serotonergic agents risks serotonin syndrome, which is a medical emergency rather than a rough evening. If you take anything prescribed for mood, anxiety or migraine, this is not the cap for you, and a pharmacist can confirm that in a two-minute conversation.
4. Cautions
- Strictly 18+.
- Not a substitute for a varied diet, and never exceed the stated maximum.
- Do not combine with medication or with other stimulants — including energy drinks, coffee and anything else on a night out.
- Never with MAO inhibitors. This is the interaction that matters most on this list.
- Do not use if you have high or low blood pressure, a heart condition, a thyroid disorder, kidney disease, or if you are being treated for depression or anxiety.
- Not during pregnancy or breastfeeding.
- Go easy on alcohol. Stimulants mask how drunk you are, which is how people misjudge the evening.
- Stimulants plus dancing plus a hot room means dehydration. Water, breaks, and somewhere cooler every so often.
- Keep out of reach of children.
- Absolutely not with antidepressants, MAOIs or other serotonergic medication. Kanna is a serotonin reuptake inhibitor and the combination risks serotonin syndrome.
- Contains synephrine, which raises heart rate and blood pressure.
If you take anything prescribed for mood, anxiety or migraine, this is the cap in the range to walk away from.
- Four capsules built on 110 mg of kanna extract 10X, with guarana, theobromine and synephrine.
- Kanna is Sceletium tortuosum; its alkaloid mesembrine is a serotonin reuptake inhibitor.
- Never with antidepressants, MAOIs or other serotonergic medication — serotonin syndrome risk.
- Synephrine raises heart rate and blood pressure. Not for anyone with a cardiovascular condition.
- One or two capsules 45 minutes ahead, with plenty of water. Two per 24 hours maximum.
- Formerly sold as Smile-E. Vegetarian capsule. 18+ only.
- Order before 16:00 on weekdays for same-day dispatch in plain, unmarked packaging.


