ANSWER:
Homeopathic Remedies for Flatulence (Wind Formation) Indigestion (Acid Reflux / Acidity / IBS) :-

Indigestion (Acid Reflux / Acidity / IBS) :-

Burning in food pipe with general sensation of burning Sulphur 30X 4 hourly

Burning pain in stomach (Ulcer), with both water and solid vomited as soon as it reaches stomach Ars Alb.30X, 4 hourly

Burning pain in the stomach, with water vomited but solid retained Bismuth 30X, 4 hourly

Burning in food pipe,with sour stool Natrum Carb.30X, 4 hourly

Excess of hydrochloric acid, burning in food pipe, heart burn, nausea and chilly feeling. Acid Sulph.30X, 4 hourly

From nervous anticipation of coming events, desire for sweets. Argentum Nit.30X, 4 hourly

Gastric complaints after taking rich fatty food; less or no thirst; better in open air Pulsatilla.30X, 4 hourly

Hyperacidity; sour and bitter belchings Iris V 30X, 4 hourly

Slow and imperfect digestion; offensive flatuence in upper part of abdomen; better after discharge of gas or eructations. Carbo Veg.30X, 4 hourly

Gastric derangement due to sedentary habits or over-Eating/Drinking. Nux Vomica.30X, 4 hourly

Dyspepsia; better after eating Anacardium Or 30X 4 hourly

Acidity with irritating eructation and frontal headache; worse in night. Robinia 30X, 4 hourly

Constant belching; tongue thickly white coated.
Heatburn. Desire for acids, pickles etc. Antim Crud.30X or 200X, 6 hourly

Digestion slow, no change after passing flatus or belching. Flatulence affects middle part of the abdomen. China 6X or 30X, 4 hourly

Abdomen bloated; easy satiety, gas affects lower part of the abdomen; worse in the evening – 4 to 8 P.M. Lycopodium 30X, 4 hourly

Pain and flatulence in stomach, smell of food causes nausea Colchicum 30X, 4 hourly (3 Doses)

Intercurrent Remedy Psorinum 30X, 4 hourly (3 Doses)
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FLATULENCE :-

Flatulence with puffiness and loud noise in the abdomen Thuja Oc 30 or 200, 4 hourly (3 Doses)

Pain in stomach and flatulence; smell of food aggravates Colchicum 30 or 200 4 hourly (3 Doses)

With distended abdomen effecting lower abdomen; better belching and passing of flatus. Worse 4 – 8 pm. Lycopodium 30, 4 hourly

Flatulence in the upper part of the abdomen pressing upwards, (everything eaten converts into wind, better by belching and passing wind) worse night and after lying down Carbo Veg 30, 4 hourly

Flatulence and distention in abdomen; not relieved by passing wind; digestion slow China 30, 4 hourly

When wind formation is around the naval. No emission of flatus by mouth or anus for long time Raphanus 30, 4 hourly

With loud eructations and belchings Asafoetida 30, 4 hourly

Flatulence with burning like that of red pepper taste in upper part of abdomen and going upto the throat Capsicum 30, 4 hourly

Every food or drink taken turns into gas; flatulent dyspepsia Nux Mosch 30 4 hourly

Flatulence due to sedentary life; bad effects of alcohol. Ineffectual urging to pass stools with constipation Nux Vomica 30, 4 hourly

Offensive flatus; even small quantity of stools passes with wind; with much rumbling in abdomen Aloe Soc 30, 4 hourly

Accumulation of flatulence in hypochondriac region; worse after anger Chamomilla 30 or 200, 4 hourly

Flatulence; smells like rotten eggs; intercurrent and most useful remedy Psorinum 30, 3 hourly (3 Doses)

Abdomen distented, no relief from passing flatus, craving for sweets; loud eructations Argentum Nit 30, 4 hourly

Take the remedy which is similar to your symptoms. No side effects or complications if taken as directed, please do not exceed the given dosage and under any circumstances do not try to mix any remedies and avoid Chocolates, Mints, Coffee, Red Meat, Alcoholic and Carbonated drinks, Spicy Rich Food while taking any Homeopathic remedies, and keep the medicines away from direct sunlight, heat strong smells and perfumes and do not store them in the fridge.
Curing without any side effects or Complications Thats the Beauty of Homeopathic Medicine. You can buy Homeopathic remedies at most health and herb stores in USA and EU and you can buy them online too.

Take Care and God Bless you.