▲ 4 r/decaf

Worst effects of giving up high caffeine beyond headaches and when?

I would like to know your weird stories. And the timing of the wild side-effects during your withdrawal.

I think my nervous system and digestion has been affected the most . Starting 10 days after I gave up. I went back to coffee during month 3 of no caffeine.

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u/HotPaleontologist838 — 10 days ago
▲ 5 r/decaf

2.5 months caffeine free - workout recovery getting difficult

No coffee, no tea, no chocolate. However, I feel way more often that my muscles do not recover as before. Three weeks ago I finished with a deload that lasted for two weeks.now again I feel like that I need a deload. I have restricted my workouts to 4 times a week. Still it is tough. I eat properly and a good amount of calories and a balanced diet. I take creatine magnesium B9 B12 and beta alanine. But nothing is like caffeine. And I am worried because I love resistance training and powerlifting. If it persists for a long time, I will start again the coffee...

Is anyone having useful tips for this situation?

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u/HotPaleontologist838 — 2 months ago
▲ 2 r/decaf

Decaf and workouts

In the last 6 weeks I was working out as a beast, and two weeks ago I had a burnout. I was working out 5-6 times a week - resistance training.

All my life I did this without problems. However, now I feel stress in my body that I cannot tolerate after the workouts.I try to do two weeks deload. Stress like alertness and close to panic attacks. Any advice?

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u/HotPaleontologist838 — 3 months ago
▲ 4 r/decaf

40 days decaf, panic attacks and palpitations

Anyone else experiencing the same?

Panic attacks came after 10 days decaf.

I was from 12/04-12/06 from 600-800 mg/day to 60-80 mg/day.

So one month full of panic attacks first time in my life.

And the palpitations appear mainly after meals.

What is going on?

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u/HotPaleontologist838 — 3 months ago

palpitations related to stimulants and withdrawal?

Hi everyone. I am male 33yo.
I have had lets say palpitations before sleep (and fear of sleeping) for six months.
27 March 2026: I had reactive hypoglycemia episodes and diagnosed.
12 April 2026: I reduced 90% my caffeine intake (it was daily 600-800 mg).
20 April 2026: I stopped vaping cold turkey (daily intake of nicotine 70-100 mg/day)
11 June 2026: I gave up caffeine

I had a heart scan in April, my heart was good. I had no complaints going on.
After 10 days off caffeine, I have had 3 panic attacks, for first time in my life. And very frequent feeling of palpitations.
In April and May, the withdrawal from nicotine were for 3 days shakiness, then magnesium also helped to go away. Then I had almost every week digestion problems, dyspepsia and gut movement reduced. The nerve in my stomach was like it was inflamated somehow.
In general I feel the palpitations after meals. I was also recently feeling waves of fear, even at home and with minor movement.

Until 31 May, I managed to workout 3 times resistance training / week. After that date, I show improvement and I have been doing 5 times / week.
My reactive hypoglyciemia happens maybe once every 40 days, and it keeps improving after I stopped the stimulants.
I do 4 meals a day at 6.30-7, 12.30, 18.00-19.00, 21.00-21.30, all meals rich in protein, and I have carbs and I try to include fats. Balance, with emphasis on protein. My weight is 95 kg and I am 183 cm.

Anyone has any idea or experience that can help me understand the problem?

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u/HotPaleontologist838 — 3 months ago

Magnesium and creatine feel so addictive

I was never taking magnesium since 3 months ago. Now, when I am not, I feel it, I feel that my body has a tendency to shake.

With creatine, I was three weeks off, and I felt like pure shit. I was so weak.

What kind of stuff are the supplements? What is inside them?

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u/HotPaleontologist838 — 3 months ago
▲ 3 r/decaf

caf withdrawal - can someone share the withdrawal symptoms from your own journey?

Since 12 April I have been consuming 1 teaspoon of coffee per day , from 10. Now two weeks off.

Zero. I have had issues with panic attack and weird digestion feeling and palpitations.

Actually maybe it is my vagus nerve that has been irritated and makes me feel weird. It got like this after I consumed 500mg taurine on Friday, but still I feel weird.

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u/HotPaleontologist838 — 4 months ago

Any taurine side-effects?

taurine 500mg: does anyone experience issues with heart rhythm and/or feeling something like vomiting/reflux?

I cannot find any disadvantages online, but I was something like nauseous or like I had acid reflux all day long, and I believe it was because of it.

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u/HotPaleontologist838 — 4 months ago

Hypo post-effects

Hi everyone, it has been one week since my last hypoglycemia (reactive), and honestly this time it was much much better than other times, in the sense that I felt I recovered faster, regarding my nervous system.

Though I still experience one week later some nervous system effects, like weakness, dizziness, and discomfort, especially after meals. I can workout without problems, but I feel everyday at some point that something's wrong with me. And the doctors in Netherlands are not the best.

Do you have any hints? Any experiences? Thank you!

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u/HotPaleontologist838 — 4 months ago

New hypo after 41 days without one

I had bad mood and little shakiness, then measured 3.8. I ate an apple and then it became 6.4 after some hour .

I do not feel a huge shock like other times (27 march my first episode, 12 April and 20 April).

I gave up nicotine abuse 150mg/day with vaping and reduced my coffee from 600mg+ to 60-70mg/ day. These changes were done from 20 April and on.

I thought I was healing. I try not to loose my hope.

I have hyperinsulinemia and reactive hypoglycemia. I treat it only with lifestyle and diet changes, like fat, fibers, etc.

Yesterday I changed the tahini with my breakfast and I used peanut butter. Maybe too many carbs?

I hoped I am more resistant than that. Yesterday I ate a lot, based on the guidelines and I did not exercise. I should be full of sugar... I do not understand.

u/HotPaleontologist838 — 5 months ago
▲ 4 r/Hypoglycemia+1 crossposts

Vaping and caffeine stimulants - reactive hypoglycemia - cold turkey on vaping, 90% caffeine reduction

I am a 33-year-old man, 1.83 m and around 90 kg. I train regularly with weights and normally aim to live an active, healthy lifestyle. Over the last two months, I experienced three main episodes that were interpreted as reactive hypoglycaemia / hyperinsulinaemia-related episodes.

I have had reassuring medical investigations. I had a full cardiac evaluation, including heart ultrasound/triplex, and I was seen by two cardiologists. Everything was normal. I also had blood tests and hormone tests. The main abnormal findings were high B12, high ferritin, low B9/folate, and white blood cells close to the lower reference limit on some tests. I am now taking folic acid/B9, magnesium malate, vitamin C, and a B-complex/multivitamin.

Before quitting, I was vaping heavily, with an estimated nicotine exposure of around 150–200 mg nicotine per day. I also consumed a very high amount of caffeine, around 10 teaspoons of instant coffee per day.

Timeline of the Hypoglycaemia Episodes

The first major episode happened on 27 March. During this episode, I experienced shaking/trembling, palpitations, dizziness, and a strong feeling that something was wrong. Emergency services/112 came, but I was medically cleared. My temperature and blood pressure were normal.

Before this first episode, several stressors had happened close together: I had trained legs, my wife had recently recovered from a strong gastroenteritis, I had an athletic massage the day before, and I was still doing intermittent fasting. That evening I ate two plain chicken wraps, which felt insufficient, but I avoided eating more because I was trying to lose weight.

After the episode, I did not recover immediately. It took around 7–10 days before I felt about 90% recovered.

The second episode happened on 12 April. The symptoms were again similar: shaking, palpitations, dizziness and intense physical alarm, while my general vital signs such as temperature and blood pressure remained normal. Around this date, I massively reduced caffeine intake from about 10 teaspoons of instant coffee per day to about 1 teaspoon per day.

Again, recovery was not immediate. After this episode, it also took several days, roughly 7–10 days, to feel close to normal again.

The third reactive hypoglycaemia-type episode happened on 20 April. It again involved shaking/trembling, palpitations and dizziness, without abnormal temperature or blood pressure. On this same date, I stopped vaping/nicotine completely, cold turkey.

After this third episode, I again needed around 7–10 days to feel around 90% recovered.

Nicotine Withdrawal Timeline

From 20 April, I stopped vaping completely after heavy daily use, estimated at around 150–200 mg nicotine per day.

In the first 1–3 days after stopping nicotine, I had shaking in my hands and body. On day two, I also experienced a short but very intense feeling of deep depression for about one hour.

After the first few days, the most intense emotional crash passed, but the shaking/trembling continued for about 14 days. During this period, magnesium and theanine helped me sleep well.

At this stage, I do not have the classic ongoing withdrawal symptoms such as irritability, concentration problems, strong hunger, strange sleep, or constipation. My sleep is generally good.

Current Diet and Insulin Stabilisation

After these episodes, I changed my diet to stabilise my blood sugar and insulin response. I now eat 4–5 meals per day, usually protein-rich, combined with either fats, fibre, or controlled carbohydrates to reduce glucose and insulin spikes.

My current diet is based on regular meals, protein, controlled carbohydrates, and enough fat to avoid large blood sugar swings. I believe this has helped me greatly improve the insulin-related instability.

My Libre/CGM readings have generally been reassuring, with values such as around 7.1 mmol/L after food and around 5.4 mmol/L several hours after eating, which are not hypoglycaemic. I am no longer mainly worried that my recent symptoms are true hypoglycaemia.

Current Main Issue: Digestive/Gut Sensitivity

My current problem feels mainly gastrointestinal rather than hypoglycaemic.

Recently, I had a digestive setback after eating a lot of fibre: many nuts, salad, and several apples. I went to the toilet five times in one day, with normal but large/soft stools, not diarrhoea. After that, I felt weak and depleted. I recovered after about a week.

Later, I had another digestive setback after eating pre-fried potatoes from the fridge and heavier mixed meals, including pizza, nuggets, salad, nuts, eggs, and other foods. I suspect that pre-fried potatoes may be a trigger for me, because I had a similar stomach issue in February after eating pre-fried potatoes that had been stored for more than two days.

My current symptoms feel mostly digestive: delayed digestion, food or water feeling like it “sits” in the stomach, cold hands, weakness, fatigue, internal tension, and reduced appetite during flare-ups. My stools are usually normal, and I do not think this is diarrhoea or true hypoglycaemia.

Overall Interpretation

My current interpretation is that I am generally healthy, but my body temporarily lost resilience because several major changes happened close together:

three reactive hypoglycaemia / hyperinsulinaemia-type episodes on 27 March, 12 April, and 20 April;

symptoms during these episodes: shaking, palpitations, dizziness and strong physical alarm;

normal temperature and blood pressure during the episodes;

emergency/medical evaluation on 27 March, with no dangerous findings;

slow recovery after each episode, taking around 7–10 days to feel about 90% recovered;

very heavy previous nicotine/vape exposure, estimated around 150–200 mg nicotine per day;

complete nicotine/vape cessation from 20 April;

massive caffeine reduction from around 10 teaspoons of instant coffee per day to 1 teaspoon per day from 12 April;

early nicotine withdrawal with shaking, temporary emotional crash, and around 14 days of tremor-like symptoms;

major diet changes to stabilise insulin;

increased protein, fat, fibre, and meal frequency;

digestive setbacks from fibre overload and possibly specific trigger foods.

I want to recover my normal life: to train 4–5 times per week, eat around 2500 kcal on average, tolerate normal meals again, and eventually be able to have occasional foods or even two glasses of wine per month without feeling fragile or afraid.

At the moment, I feel medically reassured but physically vulnerable. My goal is not only to avoid symptoms, but to rebuild metabolic, digestive, and nervous-system resilience after quitting heavy vaping, reducing caffeine, and stabilising insulin.

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u/HotPaleontologist838 — 5 months ago