Oct 12, 2022 · Common causes of rectal bleeding. Hemorrhoids. It’s normal for everyone to have hemorrhoids inside and outside of their anus, and there are several reasons they may become irritated. If you ... Doctors say that melena is the name for stools that are jet black and have a distinct stickiness to them. The color of stool, whether is it jet-black poop or stools that have red blood on them can indicate where bleeding occurs. 6. Blood that is old turns black and upper intestinal bleeding will cause black stool or black vomit.Common causes of rectal bleeding. Hemorrhoids. It’s normal for everyone to have hemorrhoids inside and outside of their anus, and there are several reasons they may become irritated. If you ...Oct 21, 2021 · If you suspect your dog has AHDS, take them to the vet immediately. Symptoms of Gastroenteritis in Dogs . Take your dog to the emergency vet if you see the signs of AHDS: Sudden onset of bloody diarrhea with no known cause, such as a change in diet. Vomiting, with or without blood. Lethargy (moving slowly, sluggish) Hemorrhoids are most likely the cause of the rectal bleeding. You can have external hemorrhoids or internal ones. Bright red blood is suggestive of hemorrhoids and dark red blood suggests colon polyps, cancer, peptic ulcers, etc. Rectal bleeding is never normal and should always be medically invesgtigated. Apr 19, 2019 · Many antibiotics cause stomach upset or other gastrointestinal side effects. These can include: nausea. vomiting. cramps. diarrhea. Macrolide antibiotics, cephalosporins, penicillins, and ... Amoxicillin and clavulanate combination may cause diarrhea, and in some cases it can be severe. It may occur 2 months or more after you stop using this medicine. Do not take any medicine to treat diarrhea without first checking with your doctor. Diarrhea medicines may make the diarrhea worse or make it last longer.In many cases, the signs of a urinary tract infection do start to improve significantly after 24-48 hours on antibiotics, but not in all cases. Some UTIs can have complicating factors, such as the bacteria causing the infection could be resistant to the initial antibiotic choice, or bladder stones are also present and are irritating the bladder ...Dec 21, 2020 · Side Effect #4: Vomiting. Sometimes children may throw up a dose of the antibiotics. If this happens once or twice, don’t worry. It’s probably just an aversion to the taste. Repeat the dose – if you child throws it up with 15 minutes of taking it. Contact your doctor if this continues more than three times. Short-term symptoms include diarrhea, gas, stomach cramps, upset stomach, nausea, vomiting, and dehydration. The infection can also cause foul-smelling and floating stools, as well as green-colored stools. Salmonella or E. coli: A bacterial infection of salmonella or E. coli can also cause green-colored stools.Yes: About one third of the solid matter in stool is dead bacteria. Also, the actions of bacteria on bilirubin influences the color of stool. We have trillions of bacteria in our intestines and antibiotics kill many of these bacteria, influencing the color of our stool. I advise taking probiotic supplements both during and after taking ...Dec 21, 2020 · Side Effect #4: Vomiting. Sometimes children may throw up a dose of the antibiotics. If this happens once or twice, don’t worry. It’s probably just an aversion to the taste. Repeat the dose – if you child throws it up with 15 minutes of taking it. Contact your doctor if this continues more than three times. Give S Boulardii Probiotic Yeast For Diarrhea. Saccharomyces boulardii is a probiotic yeast. It’s been shown to be highly effective in resolving dog diarrhea after antibiotics. S. boulardii treats acute and chronic diarrhea in humans … and research iin dogs shows the same results (11).A blood test. A blood test can identify infections and other conditions that may cause proctitis. It can also indicate blood loss or an excess of white blood cells. A stool test. A healthcare provider may test a sample of your poop for evidence of infection, bleeding or an excess of white blood cells. A rectal culture. For this test, a ... If you suspect your dog has AHDS, take them to the vet immediately. Symptoms of Gastroenteritis in Dogs . Take your dog to the emergency vet if you see the signs of AHDS: Sudden onset of bloody diarrhea with no known cause, such as a change in diet. Vomiting, with or without blood. Lethargy (moving slowly, sluggish)Blood in stool is found among people who take Amoxicillin, especially for people who are female, 40-49 old, have been taking the drug for < 1 month. The phase IV clinical study analyzes which people take Amoxicillin and have Blood in stool. It is created by eHealthMe based on reports of 82,247 people who have side effects when taking ... Antibiotic-associated diarrhea is defined as having loose, watery stools three or more times per day while taking antibiotics. This may begin about a week after starting antibiotics.puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue. rash. red, irritated eyes. redness, soreness, or itching skin. shortness of breath. sore throat. sores, ulcers, or white spots in the mouth or on the lips. sores, welting, or blisters. sudden decrease in the amount of urine.Over time, these pouches can push through your bowel wall, causing rectal bleeding, abdominal pain, and a change in bowel habits. The first-line treatment for diverticulitis is antibiotics; however, more severe cases may need IV antibiotics or fluids. Anal Fissures. Anal fissures can also cause bright red blood in the stool.For most people, antibiotic-associated diarrhea causes mild signs and symptoms, such as: Loose stools. More-frequent bowel movements. Antibiotic-associated diarrhea is likely to begin about a week after you start taking an antibiotic. Sometimes, however, diarrhea and other symptoms don't appear until days or even weeks after you've finished ... Side Effect #4: Vomiting. Sometimes children may throw up a dose of the antibiotics. If this happens once or twice, don’t worry. It’s probably just an aversion to the taste. Repeat the dose – if you child throws it up with 15 minutes of taking it. Contact your doctor if this continues more than three times.Blood in or on the stools. Change in bowel habits (pooping more or less frequently) Constipation. Diarrhea. Fatigue. Growths in the anal canal. Pain, irritation, or itching in the anal area. Unintended weight loss. Treatments for colon and rectal cancer can include surgery, radiation, chemotherapy, or immunotherapy.Rectal bleeding (also called hematochezia, meaning bright red blood in the stool) is a symptom of a problem in the digestive tract. Common causes of rectal bleeding include hemorrhoids, anal fissure, diverticulosis, infection, inflammation (IBD or irritable bowel disease, Crohn's disease, colitis), blood vessel problems (angiodysplasia). Other causes may include polyps, tumors, trauma, an ...May 10, 2019 · Comments for Dog’s recurring diarrhea after multiple antibiotics treatments. For Max to have suffered for so long with diarrhea, which I suspect is from colitis, (inflammation of the colon), it was probably triggered by a reaction to vaccines. Irritable or Inflammatory Bowel Disease can be immune mediated, secondary to ‘vaccinosis’. A blood test. A blood test can identify infections and other conditions that may cause proctitis. It can also indicate blood loss or an excess of white blood cells. A stool test. A healthcare provider may test a sample of your poop for evidence of infection, bleeding or an excess of white blood cells. A rectal culture. For this test, a ...By Dr. Jennifer Coates, DVM. If your dog has been diagnosed with hematuria (blood in the urine), this is what you can expect to happen next. Medication: Your veterinarian may prescribe any of a number of medications (e.g., antibiotics or urinary acidifiers) depending on the underlying cause of your dog’s hematuria.Among the more common side effects for amoxicillin (Amoxil) are: diarrhea. stomach upset. headache. abnormal taste sense. skin rash. vaginal yeast infection. Less common side effects include ...Nancy C. Caralla, Founder & Executive Director of the C Diff Foundation. Nancy C. Caralla is a three time C. difficile infection survivor who has 23 years’ experience in the nursing profession blended with over 25 years experience in international construction management. Over the past two years, Nancy in partnership with Foundation members ...Respiratory infections. Gastrointestinal infections. Skin or tissue infections. Some of the most common antibiotics prescribed for dogs include: Cephalexin, Clavamox, Clindamycin, Gentamicin, and Doxycycline. 3. But unfortunately, dog antibiotics aren’t all good news. They can come with a whole host of side-effects for your pooch.Short-term symptoms include diarrhea, gas, stomach cramps, upset stomach, nausea, vomiting, and dehydration. The infection can also cause foul-smelling and floating stools, as well as green-colored stools. Salmonella or E. coli: A bacterial infection of salmonella or E. coli can also cause green-colored stools.Avoid straining too hard when you poop while your body is recovering. Use a stool softener if you’re having trouble passing a bowel movement. Do not have sex or masturbate for the first 48 hours ...Bloody diarrhea. Weight loss. Mouth sores. Joint pains. Inflammatory bowel disease (IBD) is inflammation of the bowel. There are two types: Crohn’s disease and ulcerative colitis. It is due to multiple factors, including genetics, the environment, and your body’s immune system. Symptoms may develop gradually or occur suddenly.Belly Pain or Discomfort. This is the most common side effect of colonoscopy. You might feel cramping or bloating afterward. Your doctor may use air to inflate your colon so they can get a better ...Jan 28, 2022 · During pregnancy. In babies and children. Summary. Green stool, also referred to as green poop or green feces, can be a temporary condition that results from eating certain foods or taking specific medications or supplements. Green stool happens when feces has a green coloring or tint. The usual color of feces is light to dark brown. Jan 28, 2022 · During pregnancy. In babies and children. Summary. Green stool, also referred to as green poop or green feces, can be a temporary condition that results from eating certain foods or taking specific medications or supplements. Green stool happens when feces has a green coloring or tint. The usual color of feces is light to dark brown. Pediatrics 43 years experience. Mucus in stool: Is usually nothing to be worried about unless, it is happening on a regular basis,there is blood or change in bowel habits. Usually seen in intestinal... Read More. Created for people with ongoing healthcare needs but benefits everyone.Nov 14, 2022 · sweating. swelling of the face, ankles, hands, feet, or lower legs. tender, swollen glands in the neck. trouble with sleeping. trouble with swallowing. unpleasant breath odor. unusual bleeding or bruising. unusual tiredness or weakness. upper right abdominal or stomach pain. Doctors say that melena is the name for stools that are jet black and have a distinct stickiness to them. The color of stool, whether is it jet-black poop or stools that have red blood on them can indicate where bleeding occurs. 6. Blood that is old turns black and upper intestinal bleeding will cause black stool or black vomit.Literature Review. Red stools from cefdinir are described in the package insert 1 but only 3 cases are reported in the medical literature. 3–5 A search of Medline, 1996 to present, using the MESH search terms “cefdinir,” “adverse effects,” and/or “drug/food interactions” and search terms “red stool” or “maroon stool” revealed only 1 published case report of red stools ...Stomach cramps with antibiotics are not uncommon (the antibiotics make the muscles of the intestine move more quickly, and can cause loose stool as well). However, fever and itching can be a sign of an allergy. It is possible to develop an allergy at any time in your life, even to an antibiotic you have taken before.By Dr. Jennifer Coates, DVM. If your dog has been diagnosed with hematuria (blood in the urine), this is what you can expect to happen next. Medication: Your veterinarian may prescribe any of a number of medications (e.g., antibiotics or urinary acidifiers) depending on the underlying cause of your dog’s hematuria.You should plan to stop taking your blood thinner temporarily before your procedure, but only if it is safe to do so. Please contact the doctor who prescribes your blood thinner to discuss whether it is safe to stop, and when to stop. Our physicians will tell you when to resume your medication after your procedure is finished. I take iron pills. I’m 38 and have this exact symptom. Sometimes blood droplets in the bowl, sometimes just blood on the tp after wiping. Has been going on for about 5 years. Comes and goes. Sometimes can go a year or more with no sign of blood, then it happens for a month, then disappears. Figured it was fissures/hemaroids from abnormally hard stool due to a ... Jan 14, 2015 · Be especially careful to replenish your beneficial gut bacteria after a course of antibiotics (read my article about 3 things you should do after taking antibiotics). If probiotic food doesn’t do it for you, get a good probiotic supplement. Drink lots of water and stay hydrated. Exercise daily. Here is a short video on what your poop says ... According to gastroenterologist Dr. Jay Markes, symptoms of blood in poop can include: 2. Dizziness or lightheadedness if a person is passing a lot of blood in stool. Abdominal pain or discomfort if the rectal bleeding is associated with a gastrointestinal problem. Spots of blood on underwear.Clostridioides difficile (klos-TRID-e-oi-deez dif-uh-SEEL) is a bacterium that causes an infection of the large intestine (colon). Symptoms can range from diarrhea to life-threatening damage to the colon. The bacterium is often referred to as C. difficile or C. diff. Illness from C. difficile typically occurs after use of antibiotic medications. For most people, antibiotic-associated diarrhea causes mild signs and symptoms, such as: Loose stools. More-frequent bowel movements. Antibiotic-associated diarrhea is likely to begin about a week after you start taking an antibiotic. Sometimes, however, diarrhea and other symptoms don't appear until days or even weeks after you've finished ... Jul 28, 2023 · The appearance of your stool. Whether you have any of the signs of dehydration — a very dry mouth, intense thirst, decreased urination, extreme weakness. Whether there is blood in your stool. If you have additional worrisome symptoms, such as fever or abdominal pain. In most cases, your doctor can diagnose antibiotic-associated diarrhea based ... Digestive symptoms. A person may experience gas and bloating when first using probiotics. When first using probiotics, some people experience gas, bloating, or diarrhea. Changes in the gut ...Oct 21, 2021 · If you suspect your dog has AHDS, take them to the vet immediately. Symptoms of Gastroenteritis in Dogs . Take your dog to the emergency vet if you see the signs of AHDS: Sudden onset of bloody diarrhea with no known cause, such as a change in diet. Vomiting, with or without blood. Lethargy (moving slowly, sluggish) Mar 9, 2016 · Dogs that have antibiotic-responsive diarrhea over time have an increase in the serum folate. If the levels look higher than normal after testing is complete, this may help the veterinarian in the diagnosis. Research is still being conducted on antibiotic-responsive diarrhea and the difficulty of diagnosing this disorder. Nov 23, 2021 · Signs of allergic reactions range from mild to severe and may occur immediately after taking the antibiotic (anaphylaxis) or later on. During an allergic reaction, dogs may experience one or more of the following signs: Swelling of face or muzzle. Skin rash or hives. Difficulty breathing. Antibiotics & black stool. countryrose. I am wondering if anyone else gets black stool after treatment with antibiotics (cipro, zithromax). I took these for a mild UTI, and I had severe constipation too. Yesterday, my stool had normal texture, but it was almost black. I did take acidophilous during the antibiotic treatment.Short-term symptoms include diarrhea, gas, stomach cramps, upset stomach, nausea, vomiting, and dehydration. The infection can also cause foul-smelling and floating stools, as well as green-colored stools. Salmonella or E. coli: A bacterial infection of salmonella or E. coli can also cause green-colored stools.Jul 28, 2023 · The appearance of your stool. Whether you have any of the signs of dehydration — a very dry mouth, intense thirst, decreased urination, extreme weakness. Whether there is blood in your stool. If you have additional worrisome symptoms, such as fever or abdominal pain. In most cases, your doctor can diagnose antibiotic-associated diarrhea based ... A blood test. A blood test can identify infections and other conditions that may cause proctitis. It can also indicate blood loss or an excess of white blood cells. A stool test. A healthcare provider may test a sample of your poop for evidence of infection, bleeding or an excess of white blood cells. A rectal culture. For this test, a ...Treatment usually involves taking antibiotics for 4 to 12 weeks. This type of prostatitis is hard to treat and the infection may come back. If antibiotics don’t work in 4 to 12 weeks, you may need to take a low dose of antibiotics for a while. Rarely, you may need surgery to remove part or all of the prostate.Jan 8, 2022 · This is a simple test that your pediatrician should be able to do in their office (stool guaiac test). If the stool test doesn't show any blood in the red stools, then you can likely continue the Omnicef. Since Omnicef is becoming more widely used because of its good taste, once a day dosing, and effectiveness against stubborn ear infections ... Advertisement. After taking antibiotics, it is important to take probiotics and eat the proper foods to prevent gastrointestinal upset and help restore gut flora. A course of antibiotics can upset the delicate flora in your gut because they destroy both the bad and good bacteria. Foods like plain yogurt, bananas, and whole-grain cereals help to ...Dec 21, 2020 · Side Effect #4: Vomiting. Sometimes children may throw up a dose of the antibiotics. If this happens once or twice, don’t worry. It’s probably just an aversion to the taste. Repeat the dose – if you child throws it up with 15 minutes of taking it. Contact your doctor if this continues more than three times. Mar 9, 2016 · Dogs that have antibiotic-responsive diarrhea over time have an increase in the serum folate. If the levels look higher than normal after testing is complete, this may help the veterinarian in the diagnosis. Research is still being conducted on antibiotic-responsive diarrhea and the difficulty of diagnosing this disorder. Aug 12, 2023 · This effect is normal, and does not mean there is blood in your poop. The phenomenon occurs when iron that has not been absorbed in your gut mixes with the microbiome in your digestive tract, causing your stool to turn a black color. While black-looking stool is common with iron supplements, black and tarry stool is not. Literature Review. Red stools from cefdinir are described in the package insert 1 but only 3 cases are reported in the medical literature. 3–5 A search of Medline, 1996 to present, using the MESH search terms “cefdinir,” “adverse effects,” and/or “drug/food interactions” and search terms “red stool” or “maroon stool” revealed only 1 published case report of red stools ... May 1, 2023 · puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue. rash. red, irritated eyes. redness, soreness, or itching skin. shortness of breath. sore throat. sores, ulcers, or white spots in the mouth or on the lips. sores, welting, or blisters. sudden decrease in the amount of urine. Jul 6, 2023 · diarrhea, watery and severe, which may also be bloody. difficulty with swallowing. dizziness. dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position. dry mouth. fast heartbeat. fever with or without chills. general feeling of tiredness or weakness. headache. A blood test. A blood test can identify infections and other conditions that may cause proctitis. It can also indicate blood loss or an excess of white blood cells. A stool test. A healthcare provider may test a sample of your poop for evidence of infection, bleeding or an excess of white blood cells. A rectal culture. For this test, a ... Belly Pain or Discomfort. This is the most common side effect of colonoscopy. You might feel cramping or bloating afterward. Your doctor may use air to inflate your colon so they can get a better ...Nov 23, 2021 · Signs of allergic reactions range from mild to severe and may occur immediately after taking the antibiotic (anaphylaxis) or later on. During an allergic reaction, dogs may experience one or more of the following signs: Swelling of face or muzzle. Skin rash or hives. Difficulty breathing. May 1, 2023 · puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue. rash. red, irritated eyes. redness, soreness, or itching skin. shortness of breath. sore throat. sores, ulcers, or white spots in the mouth or on the lips. sores, welting, or blisters. sudden decrease in the amount of urine. Apr 17, 2017 · So, I have had to take antibiotics quite often to fight this infections. One of the side effects could be loose stomach or constipation, that could last up to six months after taking the antibiotic. So her doctor is right: it will take care of itself with time. Just eat healthy and be patient. Give S Boulardii Probiotic Yeast For Diarrhea. Saccharomyces boulardii is a probiotic yeast. It’s been shown to be highly effective in resolving dog diarrhea after antibiotics. S. boulardii treats acute and chronic diarrhea in humans … and research iin dogs shows the same results (11).Takeaway. Poop can turn green for many reasons, including a diet rich in high chlorophyll plants. Other possible causes include antibiotic use and bacterial infections. Poop is generally brown ...Jan 28, 2022 · During pregnancy. In babies and children. Summary. Green stool, also referred to as green poop or green feces, can be a temporary condition that results from eating certain foods or taking specific medications or supplements. Green stool happens when feces has a green coloring or tint. The usual color of feces is light to dark brown. Rectal Bleeding What is rectal bleeding? Looking down into a toilet and seeing blood in your stool (poop) can be alarming. Your mind might go to many places as warning bells ring that something’s wrong. Rectal bleeding is a symptom of many different conditions, some more serious than others.Blood in stool is found among people who take Amoxicillin, especially for people who are female, 40-49 old, have been taking the drug for < 1 month. The phase IV clinical study analyzes which people take Amoxicillin and have Blood in stool. It is created by eHealthMe based on reports of 82,247 people who have side effects when taking ... Takeaway. Poop can turn green for many reasons, including a diet rich in high chlorophyll plants. Other possible causes include antibiotic use and bacterial infections. Poop is generally brown ...Jan 9, 2023 · This section lists a few of the possible reasons. 1. Viral or bacterial illnesses. Viral or bacterial infections and parasitic infections can affect digestion and cause foul-smelling stool or ... Signs of allergic reactions range from mild to severe and may occur immediately after taking the antibiotic (anaphylaxis) or later on. During an allergic reaction, dogs may experience one or more of the following signs: Swelling of face or muzzle. Skin rash or hives. Difficulty breathing.Common symptoms of proctitis include. tenesmus, which means feeling a constant urge to have a bowel movement even though your bowel may be empty. an urgent need to have a bowel movement. diarrhea or constipation. cramping and pain in your anus, rectum, or the left side of your abdomen, which may occur during bowel movements.
Oct 19, 2022 · Avoid straining too hard when you poop while your body is recovering. Use a stool softener if you’re having trouble passing a bowel movement. Do not have sex or masturbate for the first 48 hours ... . Jmh
Sep 1, 2023 · Bright red blood coming from the rectum: This most commonly appears during a bowel movement or right after. Pressure or discomfort in the rectum; Black or maroon stools: If the blood is coming from higher up in the intestine contained within the stools, the stools will appear black or maroon in color.Duration of symptoms Literature Review. Red stools from cefdinir are described in the package insert 1 but only 3 cases are reported in the medical literature. 3–5 A search of Medline, 1996 to present, using the MESH search terms “cefdinir,” “adverse effects,” and/or “drug/food interactions” and search terms “red stool” or “maroon stool” revealed only 1 published case report of red stools ... Secondary Constipation. People often experience some form of digestive distress after taking oral medications such as blood-pressure drugs, anticholinergics, opioids, antispasmodics, antacids, and antibiotics. Some of these drugs hamper the nerve and muscle function in the large intestine, while others disrupt the gut flora.Dec 30, 2022 · Until 2 months of age, they may pass a stool after each feeding. But, if stools suddenly increase in number and looseness, suspect diarrhea. If it lasts for 3 or more stools, the baby has diarrhea. If the stools contain mucus, blood or smell bad, this points to diarrhea. Other clues to diarrhea are poor eating, acting sick, or a fever. Blood in stool is found among people who take Amoxicillin, especially for people who are female, 40-49 old, have been taking the drug for < 1 month. The phase IV clinical study analyzes which people take Amoxicillin and have Blood in stool. It is created by eHealthMe based on reports of 82,247 people who have side effects when taking ... Jan 28, 2022 · During pregnancy. In babies and children. Summary. Green stool, also referred to as green poop or green feces, can be a temporary condition that results from eating certain foods or taking specific medications or supplements. Green stool happens when feces has a green coloring or tint. The usual color of feces is light to dark brown. Hemorrhoids are enlarged veins in anal area, they look like a pinkish/bluish clumps of mucosa. You can see and feel external hemorrhoids. They may be painfull, like after prolonged sitting, they often itch, and often bleed when you strain. Internal hemorrhoids are not seen from outside, are usually not painfull, but can cause thin stools.Many antibiotics cause stomach upset or other gastrointestinal side effects. These can include: nausea. vomiting. cramps. diarrhea. Macrolide antibiotics, cephalosporins, penicillins, and ...Jul 5, 2018 · Some bacteria produce vitamin K, which the body needs to make the blood clot. To reduce the impact of antibiotics on vitamin K levels, people can eat: kale. spinach. turnip greens. collards. Swiss ... Hemorrhoids are most likely the cause of the rectal bleeding. You can have external hemorrhoids or internal ones. Bright red blood is suggestive of hemorrhoids and dark red blood suggests colon polyps, cancer, peptic ulcers, etc. Rectal bleeding is never normal and should always be medically invesgtigated. May 1, 2023 · puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue. rash. red, irritated eyes. redness, soreness, or itching skin. shortness of breath. sore throat. sores, ulcers, or white spots in the mouth or on the lips. sores, welting, or blisters. sudden decrease in the amount of urine. What are the signs and symptoms of diverticulitis? Pain in the lower left side of your abdomen. Fever and chills. Nausea or vomiting. Constipation or diarrhea. An urge to urinate or have a bowel movement more often than usual. Bloody bowel movements. Bloating and gas.What Does Blood in a Dog’s Poop Look Like? Bloody stool can appear several different ways. The color and appearance of the blood helps determine which part of the digestive tract the blood is coming from. Hematochezia: Bright Red Blood in a Dog’s Poop “Hematochezia” is the term used to describe when there is bright red blood in a dog ...Mar 27, 2022 · Treatment. Generally speaking, antibiotic-associated diarrhea will improve once the course of antibiotics is completed. Sometimes it may be necessary to switch to another antibiotic if the symptoms are intolerable. To prevent dehydration, drink plenty of water (around eight to ten 8-ounce glasses per day) with an occasional sports drink to ... Hemorrhoids are most likely the cause of the rectal bleeding. You can have external hemorrhoids or internal ones. Bright red blood is suggestive of hemorrhoids and dark red blood suggests colon polyps, cancer, peptic ulcers, etc. Rectal bleeding is never normal and should always be medically invesgtigated..