Understanding constipation in children with autism: Why it might happen, what helps and a handy homeopathic remedy cheat sheet!

To truly support a child struggling with constipation, we have to look beyond quick fixes and ask a deeper question: what is the bowel trying to tell us?

In children with autism, constipation is rarely caused by just one thing. It is usually the result of several overlapping factors — sensory processing differences, restricted eating patterns, nervous system stress, muscle tone, microbiome balance, and sometimes past painful experiences around toileting. Each of these can influence how effectively the colon moves and empties.

Rather than simply adding more fibre or relying on short-term solutions like magnesium or laxatives (making the issue worse in the long run), it is far more effective to understand the underlying pattern. When we address the root causes gently and consistently, bowel function often improves naturally — and with it, comfort, behaviour, sleep, and overall wellbeing.

Below, is a break down of the most common causes of constipation in children with ASD and practical ways to support each one.

I purposely am not talking about specific diets at this point. This is very individual and many children have picky tendencies which can create issues. This will require a more tailored approach.

Sensory Processing & Body Awareness

Some children don’t feel the urge to go — or they feel it too late.

Supportive ideas….

1. Scheduled toilet sits (5 minutes after breakfast and dinner; neutral tone, no pressure)

2. Footstool so knees are above hips (optimises anorectal angle)

3. Warm drink before sitting (stimulates gastrocolic reflex)

4. Calm, predictable bathroom environment

5. Deep pressure input before sitting (wall pushes, weighted blanket, joint compressions)

Homeopathic remedy suggestions

• Opium – No urge; stool retained without discomfort; sluggish peristalsis

• Alumina – No urge even with soft stool; rectal inactivity

• Silicea – Ineffectual urging; stool recedes

• Calcarea carbonica – Sluggish children; delayed development

• Causticum – Weak rectal tone; incomplete evacuation

• Graphites – Large stools, fissures, timid temperament

Naturopathic support

• Magnesium glycinate (for muscle relaxation)

• Warm Epsom salt baths

• Probiotics (if tolerated) see how to make your own probiotic drink here

• Gentle abdominal massage (clockwise)

• Movement therapy (trampoline, crawling games)

Fibre

Constipation is often about fibre type and balance — not just “more fibre.”

Supportive ideas….

1. Reduce daily fruit pouches – Replace one with chewable fruit with skin on (apple, pear slices, kiwi).

2. Add natural sea salt to meals – A pinch on the food.

3. Include animal fats if tolerated – Eg: Grass fed organic butter, egg yolk (can be strired/cooked into food), organic meat fat (tallow for frying/cooking).

4. Add insoluble fibre (roughage) – Eg: Oats (whole not milled), brown rice, cooked vegetables., beans, lentils, chickpeas, nuts, and seeds. (better to be whole but can be sneaked into foods once blended, the fibre remains the same!)

5. Include chia seeds - easily hidden in food these supply both soluble and insoluble fibre. Try this winning CHIA JAM recipe!!

6. Limit daily banana & applesauce – These can firm stools too much.

Homeopathic Remedy Suggestions

• Lycopodium – Bloating, right-sided gas, worse 4–8pm

• Nux vomica – Sedentary, irritable, ineffectual urging

• Calcarea carbonica – Sluggish metabolism, carb preference

• Sulphur – Early morning urging, heat, messy stools

• Sepia – Hard ball-like stools with fatigue

Naturopathic Support

• Daily kiwi (evidence-based motility support)

• Small amounts prune or pear puree

• 1 tsp olive oil mixed into meals

• Bone broth stirred into food

• Digestive enzymes if protein tolerance is low

Low Salt / Electrolyte Imbalance

The bowel needs sodium to keep stool hydrated. It plays a crucial role in producing stomach acid, regulating nutrient absorption in the small intestine, and managing fluid balance in the colon. Adequate salt intake is necessary for proper muscle contractions and preventing constipation.

Supportive ideas….

• Add sea salt to meals

• Homemade electrolyte drink (water + pinch sea salt + splash juice)

• Trace Mineral drops (if advised)

• Bone broth (if histamine is not an issue)

• Coconut water (small amounts)

• Magnesium citrate

Homeopathic Remedy Suggestions (dry hard stool)

• Bryonia – Dryness everywhere; thirst for large amounts. Painful.

• Alumina – Dry mucous membranes; no urge

• Natrum muriaticum – Dry, crumbling stool, or soft but recedes

• Opium – Little or no urge to go, even when stool has been there for days. Stools are large, dry, and difficult to pass.

• Plumbum – Strong cramping pains with the tummy pulling inward or feeling tightly drawn in. Stool is very hard and difficult to move, often with intense gripping pain before or during passing.

Gut Microbiome Imbalance

Methane-producing bacteria can slow stool movement.

Supportive ideas….

1. Avoid constant grazing.

2. Space meals 3–4 hours apart.

3. Include protein at each main meal.

4. Reduce excess fruit sugars temporarily.

5. Encourage daily movement.

Homeopathic Remedy Suggestions

• Carbo vegetabilis – Extreme bloating, air hunger

• Lycopodium – Gas with distension, right-sided

• Nux vomica – Dysbiosis from diet/medications

• Sulphur – Heat, skin issues, altered flora

• China (Cinchona) – Weakness and constipation after fluid loss

• Bowel nosodes (under practitioner guidance)

Naturopathic add-ons

• Probiotics (strain-specific)

• Prebiotic fibre slowly introduced

• Fermented foods (if tolerated)

• Garlic or oregano in cooking

• Consult practitioner if bloating is severe

• Organic Acid Testing to analyse gut health

Anxiety & Stress

The gut slows when the nervous system is on high alert.

Supportive ideas….

1. Predictable toilet routine.

2. Never force sitting.

3. Visual schedule for bathroom times.

4. Deep breathing games.

5. Physical play before toilet time.

Homeopathic Remedy Suggestions

• Argentum nitricum – Anticipatory anxiety

• Gelsemium – Paralysed by fear

• Ignatia – Emotional suppression

• Calcarea carbonica – Security-seeking

• Pulsatilla – Clingy, weepy, better for reassurance

• Stramonium – Fear-based retention

Naturopathic add-ons

• Magnesium glycinate (calming)

• Chamomile/ lemon balm tea

• Warm baths with epsom salts (to increase magnesium intake)

• Lavender in diffuser

Low Muscle Tone (Hypotonia)

Weak core muscles reduce effective pushing.

Supportive ideas….

1. Daily crawling or obstacle play.

2. Trampoline jumping.

3. Yoga poses (child’s pose, squat).

4. Wheelbarrow walking.

5. Core strengthening games.

Homeopathic Remedy Suggestions

• Calcarea carbonica – Hypotonia, delayed milestones

• Silicea – Weak connective tissue

• Causticum – Neuromuscular weakness

• Alumina – Atony

• Baryta carbonica – Developmental delay with shyness

Naturopathic add-ons

• Physiotherapy support

• Abdominal massage

• Squat positioning at toilet

• Movement before meals

Medication Effects

Some medications slow gut movement.

Supportive ideas….

1. Always review meds with prescriber.

2. Increase fluids + salt

3. Add healthy fats.

4. Encourage daily movement.

5. Monitor stool pattern consistently.

6. Include liver support (under practitioner advice)

Homeopathic Remedy Suggestions

• Nux vomica – Most common constipation relief from the use of medical drugs

• Opium – Bowel inactivity

• Sulphur – Obvious high fat content in stool

• Lycopodium – Bloating

• Chelidonium – Liver support

Withholding After Painful Stool

Fear creates a cycle.

Supportive ideas….

1. Soften stool with above advice

2. Celebrate attempts, not outcomes.

3. Use reward charts.

4. Address potential fissures with homeopathy

Homeopathic Remedy Suggestions

• Opium – Retention after shock

• Silicea – Fissures, painful expulsion

• Staphysagria – Withholding after emotional hurt

• Calcarea carbonica – Fearful children

• Nitric acid – Fissure pains

Naturopathic add-on

• Barrier cream if fissures present

• Warm baths

• Magnesium support

• Increased healthy fats

• Gentle reassurance and consistency

  Below is a cheat sheet of all the homeopathic remedies mentioned above. Use low potencies 6c or 12c (30c if neither of those are available), and use 2-3 times daily for up to 7 days. Or once daily for longer periods up to 4 weeks. You can use up to 3 in a water combination…(use 2 pills of each in a glass of water and stir before giving a spoonful as the dose. Store in the fridge and discard after 7 days )

  Always consult a practitioner if symptoms persist

Final Thoughts..

Constipation in children with ASD is rarely “just constipation.”

It is often a reflection of:

• Nervous system regulation

• Sensory integration

• Diet

• Microbiome ecology

• Muscle tone

• Emotional safety

As always, if you would like to work together to help your child please book in a free 15 minute chat to discuss further