Magnesium citrate or oxide at 500mg to two grams per night. One gram is a common effective dose [Source: PubMed]
Digestive bitters (as before)
Fat intake (large intestine motility is increased by fat): butter, coconut or olive oil, or egg yolks are all nutritious fats [Source: PubMed]
Increase insoluble fibre: nuts, peas, green beans and flaxseeds [Source: PubMed]
Warm water or herbal tea in the morning, drunk slowly (stimulates your large intestine)
Potassium (retains water in the stool): fresh homemade juice using cucumbers, tomatoes and carrots. Avocados and bananas are high in potassium