Safety and side effects

Caffeine sensitivity

Slim Coffee Booster contains caffeine from green coffee bean extract and green tea extract, on top of whatever caffeine is already in the coffee you stir it into. For most healthy adults who already drink coffee, this is a modest addition. But if you're sensitive to caffeine, don't usually drink much coffee, or you're already having several cups a day, you may notice:

• Feeling more alert or jittery than usual, particularly in the first few days.
• A faster heart rate or mild restlessness if taken on an empty stomach.
• Disrupted sleep if it's taken in the afternoon or evening.

Practical ways to manage it

Take it earlier in the day, ideally with breakfast, and count it as part of your total daily caffeine — not an addition on top of your normal limit. If you already keep to a low-caffeine diet for health reasons, this is worth discussing with your doctor before starting.

Fibre and digestion

Two of the seven ingredients — resistant dextrin and psyllium husk — are soluble fibres. They're common, well-tolerated additions to food and drink, but any increase in fibre intake can cause a short adjustment period, especially if your usual diet is lower in fibre.

• Bloating or wind. Often the first thing people notice; it usually eases within a week as your gut adjusts.
• Looser or firmer stools. Fibre can shift things either way depending on your usual diet and hydration.
• Feeling fuller. Soluble fibre absorbs water, which is part of why staying hydrated matters.

Who should avoid it

Slim Coffee Booster is formulated for healthy adults. The following groups should not take it, or should only do so after speaking with a health professional:

If you're unsure which of these applies to you, the safest step is a short conversation with your GP or pharmacist before your first sachet.

How to start gently

You don't need to do anything unusual to start Slim Coffee Booster comfortably — mostly it's about giving your body a little time to adjust to the extra fibre and caffeine.

• Take it with breakfast rather than on an empty stomach for the first week.
• Keep a water bottle handy and sip through the day, not just at coffee time.
• Stick to one sachet a day — doubling up doesn't speed anything up, it just doubles the caffeine and fibre load at once.
• Keep your normal meals and any other caffeinated drinks in mind so your overall intake stays sensible.

When to stop and seek advice

If something doesn't feel right — ongoing digestive discomfort, disrupted sleep, or anything else out of the ordinary — stop taking it and speak with your GP or pharmacist. If you're within 30 days of delivery, you're also covered by our money-back guarantee and can contact us for a refund or replacement.

This page is general information, not medical advice. Slim Coffee Booster is a food supplement and is not intended to diagnose, treat, cure or prevent any disease. Always read the label and use only as directed.

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