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4RX Store > Medication List > Gastrointestinal drugs > Order Prilosec online

Gastrointestinal Medication (Prilosec)

Generic name:
Brand name:
The medication mostly known as Prilosec is based on an active substance Omeprazole. It suppresses the excessive production of stomach acid by inhibiting the enzyme that promotes its production. The medication is prescribed for the treatment and prophylaxis of stomach and duodenum ulcers, ulcers caused by NSAIDs, stress, and other factors including H. pylori, gastroesophageal reflux disease, and other conditions in which the therapy requires lowered stomach acidity.
Duodenal ulcers, non-cancerous stomach ulcers, ulcers caused by H. pylori, Stomach and duodenal ulcers caused by NSAIDs, Reflux esophagitis; gastroesophageal reflux disease (GERD), Zollinger-Ellison syndrome
The medication is effective for the treatment of stomach and duodenum ulcers, GERD, Zollinger-Ellison syndrome, and other conditions that require the lowering of stomach acidity
Dr Reddy’s Pharmaceuticals
Dr Reddy’s Pharmaceuticals
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Prilosec (Generic Omeprazole)
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  Generic Medication guide:

What is the medication sold under the brand Prilosec?

The brand Prilosec is owned by Procter & Gamble. The product sold under this name is based on Omeprazole that helps curing diseases of the stomach and duodenum associated with ulceration. To get the medication cheap, you can buy Prilosec from our online drugstore. We sell generic versions of the most popular medicines, i.e. the same drugs simply made by other companies who do not promote their trademarks.

Short drug info
Trade names Losec, Prilosec, Zegerid, others
Pregnancy category
AU: B3

US: C (Risk not ruled out)
Routes of administration by mouth, IV
Legal status
AU: S4 (Prescription only)

UK: General sales list (GSL, OTC)

Drug class proton pump inhibitor
Bioavailability 35–76%
Protein binding 95%
Metabolism Liver
Elimination half-life 1–1.2 hours
80% (urine)

20% (bile via feces)

The medication suppresses a certain enzyme, proton pump, which is responsible for the formation of acid in the stomach. The effect is reversible. The effect depends on the dosage, i.e. the higher the dosage is taken, the more pronounced is the suppression of acid formation.

Reducing the acidity of stomach juice can lead to the raise in the number of bacteria in the digestive tract. Therefore, such treatment can lead to a risk of increased growth of digestive tract infections caused so caution must be followed.

Besides its main effect, Prilosec also has a bactericidal effect on Helicobacter pylori. Thus it is commonly included in the therapy of ulcers associated with these bacteria along with antibiotics.

In reflux ulcerative esophagitis, suppression of acid penetration into the esophagus and maintaining a neutral pH for 24 hours with a lowering in the destructive properties of the contents of the stomach helps to ease symptoms and complete healing of the gullet. The formulation is highly efficient in the therapy of severe erosive and ulcerative esophagitis which are ineffectively treated with H2 receptor blockers.

Indications for use

You can buy generic Prilosec for the therapy of:

- Duodenal ulcers;

- Non-cancerous stomach ulcers;

- Ulcers induced by H. pylori bacteria;

- Stomach and duodenal ulcers caused by NSAIDs;

- Gastroesophageal reflux disease (GERD);

- Zollinger-Ellison syndrome.

The formulation is also used for the prophylaxis of:

- Relapses of benign gastric ulcer;

- Ulcers due to the risk related to NSAIDs.

Dosage regimens

When you buy Omeprazole you can follow the described regimens but it is important to exclude any cancerous tumors of the digestive tract before the therapy is started.

The medication should be taken before breakfast, without damaging the capsule, washed down with a small amount of water. If needed, the capsules can be opened and directly swallowed with half a glass of water, or stirred in any fruit juice, or in unsalted water. Before taking the mixture, it should be shaken and washed down with water.

1. Therapy and prophylaxis of duodenal ulcers and benign stomach ulcers, including those associated with NSAIDs: 20 mg once a day. The duodenal ulcer usually heals within two weeks. In incomplete healing, the medication is used for the next two weeks. In severe or recurrent cases of duodenum ulcers, 40 mg per day is advised. Stomach ulcer healing may require the use of the medication for 8 weeks in total.

2. GERD or gullet ulceration: 1 capsule two times a day for one to two months, maintenance therapy for GERD - 1 capsule 1 time per day, duration up to 12 months.

3. Chronic gastritis with the increased acid-producing function of the stomach in the acute stage: 1 - 2 capsules per day for 2 - 3 weeks.

4. Functional dyspepsia: 1 - 2 capsules per day for 2 - 3 weeks.

5. For eradication of Helicobacter pylori: 1 capsule twice a day with antibiotics (tetracycline, furazolidone, or others) and bismuth preparations).

6. Zollinger-Ellison syndrome: the initial dosage is 3 capsules per day, if needed, the dosage can be raised; select a dose individually.

Dosages for children for GERD treatment

Patient Weight Omeprazole Daily Dose
5 < 10 kg 5 mg
10 < 20 kg 10 mg
≥ 20 kg 20 mg

Contraindications for Prilosec use

You should not buy generic Omeprazole if you:

- Have chronic liver diseases (including history);

- Have hypersensitivity to the components of capsules;

- Are pregnant or breastfeeding.

The medication can be used for kids but pediatrician’s indication is needed.

Adverse effects of Prilosec

The most common adverse reactions to medication use are:

- Headache,

- Pain in the abdomen,

- Stool disorders,

- Bloating,

- Nausea/vomiting.

Very rarely: dry mouth, inflammation of the oral mucosa, candidiasis or pancreatitis have been reported. Itching, skin rashes, hair loss, photosensitivity, and hyperhidrosis were sometimes observed.

Interaction with medicines

Before you order Prilosec, consult with your healthcare provider about the possibility of the medication combination with other medicines if you use any.

The simultaneous use of atazanavir with the medication is not advised.

In the case of the simultaneous use of Clarithromycin, staining of the tongue in brown-black was sometimes observed. After the end of the course of treatment, this phenomenon disappeared.

The ability to influence reaction

It is advised to refrain from driving vehicles and engaging in potentially hazardous activities that require increased attention and speed of psychomotor reactions since side effects such as vertigo and blurred vision are possible.


Symptoms: agitation, sluggishness, blurred vision, tachycardia, nausea, vomiting, bloating, diarrhea, dizziness, abdominal pain, depression, confusion. The treatment is aimed at the lowering of the symptoms.

Special recommendations

- Omeprazole, like all medicines that suppress the secretion of hydrochloric acid in gastric juice, can lower the absorption of vitamin B12 due to hypo- or achlorhydria.

- Use of the formulations from the class can lead to raised risk of digestive infections caused.

- The drug contains sucrose as an auxiliary substance, therefore, individuals with rare hereditary forms of fructose intolerance, impaired glucose/galactose absorption or sucrose-isomaltase deficiency should not be prescribed the drug.

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Our doctor prescribes online for free, and there is no doctor’s consultation fee.

Discrete packaging
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For more answers see the FAQ section


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