Skip solid food for a day and switch to juice, and by mid-afternoon most people feel the same thing: a flat, slightly shaky low. It's not mysterious. Juice is mostly sugar and water with the fibre stripped out, so it digests in minutes and your blood sugar spikes then drops fast. A whole apple takes an hour or two to work through your system; the same apple juiced is gone in twenty minutes.
That crash is what drives the "I need something sweet right now" feeling by hour four or five of a juice-only day. It's not a sign anything is going wrong — it's just how fast sugar without fibre moves through you. Coffee or tea on top makes the swing sharper, not smaller.
The fix isn't more juice. It's something that digests slower. Dates work here specifically because the sugar comes packaged with fibre and a bit of fat-soluble structure — the fibre content is roughly 6-8g per 100g, high for a fruit — so the same natural sugar releases over a longer stretch instead of hitting all at once. Three or four dates and a glass of water between juices flattens the crash noticeably.
Coming off a juice fast works the same way. Don't jump straight to a full plate. Dates first, twenty minutes of nothing else, then a normal light meal — rice, protein, cooked vegetables. Jumping straight to a heavy meal after a day of only liquids is what usually causes the stomach discomfort people blame on the fast itself; it's really just the gap between liquid and solid being too abrupt.
None of this requires a special product. A pack of decent kurma from a wholesaler — Kurma Piarom Malaysia is one source worth checking for current stock — costs less than most juice-cleanse add-ons and does the actual job of smoothing the sugar curve.