Welcome! Log in or Register
2 Reviews

Magnesium carbonate and calcium carbonate are commonly used as antacids in a variety of preparations. They alter the acidity of the stomach's juices, by binding to excess acid. This decreases the acidity of the contents of the stomach which may in turn help to relieve the symptoms of ulcers, heartburn or dyspepsia.

  • Write a review >
    How do you rate the product overall? Rate it out of five by clicking on one of the hearts.
    What are the advantages and disadvantages? Use up to 10 bullet points.
    Write your reviews in your own words. 250 to 500 words
    Number of words:
    Write a concise and readable conclusion. The conclusion is also the title of the review.
    Number of words:
    Write your email adress here Write your email adress

    Your dooyooMiles Miles

    2 Reviews
    Sort by:
    • More +
      19.07.2004 20:05
      Very helpful
      (Rating)
      3 Comments

      Advantages

      Disadvantages

      Spicy curries? A beer or two? Christmas dinner, with all the chocolates and nuts after? Late dinner? Pigging out on takeaways? For me, these indulgences usually lead to one thing - uncomfortable and often painful indigestion/heartburn. It can keep me awake at night and make me feel quite sick. Why does pleasure so often come with a price? Well, not any more! As long as there are Rennie Soft Chews in the cupboard, help is at hand. These green, chewy, spearmint-flavoured tablets have relieved my symptoms every time I have needed them. By chewing one (sometimes two, if I've had rich food or fizzy drink late in the evening) of them I can feel the fire in my belly cool down rapidly as the alkaline calcium carbonate (more commonly known as chalk!) counteracts the acid produced in my stomach as a result of rich food or alcohol. I have tried another indigestion remedy from Tesco and it is just as effective at relieving the symptoms of heartburn and indigestion. This is because the active ingredient is always the same chalky calcium carbonate. However, the Soft Chews are the tastiest indigestion tablet, in fact if I had been offered a blind tasting I would have thought they were soft mints! They do not crumble like other tablets, so you can chew them slowly, making the whole process more pleasant. Here is the boring technical information that Rennie show on their website (and the leaflet provided in the box) about Soft Chews: "1. NAME OF THE MEDICINAL PRODUCT Rennie Soft Chews 800mg Chewable Tablets 2. QUALITATIVE AND QUANTITATIVE COMPOSITION Calcium Carbonate 800.0 mg For excipients see section 6.1 3. PHARMACEUTICAL FORM Chewable Tablets. Square green soft chewable tablets 4. CLINICAL PARTICULARS 4.1 Therapeutic indications For the relief of indigesti
      on, heartburn, nervous indigestion, hyperacidity, flatulence, upset stomach, dyspepsia, biliousness, overindulgence in food and drink, indigestion during pregnancy. 4.2 Posology and method of administration Tablets to be taken orally, sucked or chewed. Adults: One or two tablets to be sucked or chewed as required, to a maximum of ten tablets a day. Elderly: No special dosage regimen is required, but care should be taken to observe the contraindications and warnings. Children: Children over 12 years: As adults. Children under 12 years: Not recommended. 4.3 Contraindications Hypersensitivity to any of the ingredients. Hypercalcaemia 4.4 Special warnings and special precautions for use Use of calcium-containing antacids should be avoided in patients with moderate to severe renal failure. Diabetic patients should note that the product contains 1727 mg sucrose. It also contains glucose syrup which contains the equivalent of not more than 912 mg maltose per tablet and not more than 146 mg glucose per tablet. 4.5 Interactions with other medicaments and other forms of interactions Antacids may impair the absorption of other drugs, e.g. iron, tetracyclines, and vitamins, if taken concomitantly. 4.6 Pregnancy and lactation Well-conducted epidemiological studies indicate no adverse effects of calcium carbonate during pregnancy or on the health of the foetus / newborn child. Rennie Soft Chews can be used during pregnancy and lactation. 4.7 Effects on Ability to drive and use machines Not relevant. 4.8 Undesirable effects Ingestion of large quantities of calcium carbonate may cause alkalosis, hypercalcaemia, or milk alkali syndrome. These usually only occur following larger than rec
      ommen ded dosages. 4.9 Overdose Prolonged use of high doses of calcium carbonate can result in hypercalcaemia, metabolic alkalosis and reversible renal failure. Symptoms include, nausea, vomiting and abnormal muscular weakness. In such cases, the product should be withdrawn and adequate isotonic fluid intake encouraged. In addition to symptomatic treatment haemodialysis and other therapeutic measures such as saline diuresis have also been used. Intravenous biphosphonates have employed very effectively in the management of hypercalcaemia, with resolution of the condition over several days. 5. PHARMACOLOGICAL PROPERTIES 5.1 Pharmacodynamic properties Calcium carbonate reacts with excess acid in the gastric medium to produce soluble calcium chloride. ATC Code. A02AC 5.2 Pharmacokinetic particulars A small amount of calcium may be absorbed, but in healthy subjects is usually rapidly excreted by the kidney. The soluble chloride produced by the reaction of calcium with gastric acid react, in turn, with intestinal, biliary and pancreatic secretions to form insoluble salts, which are eliminated with the faeces. 5.3 Preclinical safety data There are no pre-clinical data which are additional to those already stated in other sections of the SPC. 6. PHARMACEUTICAL PARTICULARS 6.1 List of excipients Glucose syrup. Sucrose Water Hydrogenated refined vegetable oil Glycerol Peppermint flavour Lecithin Quinoline yellow, E 104 Brilliant blue, E 133 Purified talc 6.2 Incompatibilities Not applicable. 6.3 Shelf life 18 months, unopened. 3 months opened. Once the outer packaging has been opened the contents should be used within 3 months. 6.4 Precauti
      ons for st orage Do not store above 25 C. 6.5 Nature and contents of container Individual tablets are wrapped in a laminate consisting of aluminium foil 7µm (18.9gsm), and siliconised paper (45gsm). Eight individually wrapped tablets are placed in a heat sealable laminate comprising of aluminium foil 9µm, bleached kraft paper (49gsm) and heat-sealing wax. The sticks of 8 tablets are packed into a polypropylene flow wrap to contain either one or three sticks of 8 tablets. Pack sizes: 8, 24 tablets 6.6 Instructions for use/handling No special requirements Always read the label." A lot of information for a chewable indigestion tablet, methinks! So I would highly recommend these chewy tablets for anyone with the symptoms described above, they aren't as chalky as other indigestion remedies but more expensive than generic indigestion remedies (e.g. supermarket own brand tablets) that are just as effective. Rennie also sell tablets (which do the same job as Soft Chews but are more crumbly like chalk), Rap-Eze (fruit-flavoured tablets like Tums), Sugar-Free, and Rennie Deflatine which contain added ingredients for the relieve of trapped wind and embarrassing flatulence!

      Comments

      Login or register to add comments
      • More +
        12.02.2001 02:47
        Very helpful
        (Rating)
        3 Comments

        Advantages

        Disadvantages

        Arghhh, ouch, oomph, urghhhh, ouch, ouch and ouch again! Arghh, arghh, arghh and another ouch just for good measure! What is going on I hear you ask? Well, I've not converted to one of the 90 word brigade who is struggling to come up with enough words, and contrary to popular belief I've not gone mad, well not completely mad that is. No, I've got heartburn, indigestion, acid indigestion, call it what you will, and it bloody hurts! I've been getting a lot of heartburn as I like to call it for the past 6 months, I've no idea why, maybe it's all that fast livin' with loose women (well, maybe not too many loose women, more too much spicy and fried food). Indigestion doesn't sound to sinister, but it's bloomin' painful and bloody anoying, especially if you've just spent £40 on a lovely meal and have the afterglow spoilt by heartburn! Besides, I'm only 26 years old. I wouldn't mind so much if I was an old grandad, as you tend to expect this sort of thing when you get a bit older (sorry, more mature) but not at my youthful age! But hey, not to worry, there is relief at hand. There are a huge array of indigestion tablets out there, and while they can't stop you from getting indigestion, they can certainly help relieve the symptoms. I started off using Remegel, you know the ones with the advert 'they're chewy, not chalky'. Now this is quite a bizarre advertising slogan as the main ingredient is Calcium Carbonate. For those of you who failed GCSE Chemistry, this is essentially chalk! In a way they live up to the slogan, as they actually taste quite nice and not chalky at all, the only problem with these is that I found out they containg gelatine. To the vast majority of the population this means absolutely nothing, but I'm a namby pampy, liberal vegetarian, and as gelatine is made from animals (usually cow or pig) I'm a bit averse to it!! So I m
        oved onto that pensioners favourite, Rennie! And what choice you get with Rennie, not only can you have the standard flavour, but you can even buy a spearmint version, my cup runneth over! Sorry, I don't mean anything against Rennie, I'm just a bit peeved to be getting heartburn, it really does nothing for my temper you know. The blurb on the back of the packets says 'relieves acid indigestion, heartburn, nervous indigestion, acidity, flatulence, upset stomach, dyspepsia or biliuosness'. Now I'm not sure what 'nervous indigestion' is, maybe indigestion in need of some counselling or confidence training, and as for biliousness, I wouldn't dare hazard a guess! Anyway, surprisingly enough for an indigestion tablet, the main ingredient is again Calcium Carbonate, so I'm eating chalk again. Still, they taste better than the stuff my teacher used to write with (don't ask me how I know this, I just do!). You're supposed to suck or chew (chew, it crumbles as soon as it hits your mouth!) two tablets as and when required, up to a maximum of 16 a day. I'm not up to that many yet, but I think I'm getting addicted. Whilst not chewy, and really quite chalky, they certainly do work. I still get food repeating (what a lovely thought eh!) but my burps taste nice and chalky, rather than awfully acidic and burning. The tablets also contain Heavy Magnesium Carbonate, I don't like the sound of this too much, but as the tablets keep working I'll forget my discomfort over this matter! So, relief is out there, and it costs less than £2.00 a packet. Available from all good chemists, some bad ones, some downight awful ones, and a few dodgy service stations as well! Available to those of sound mind and body, and especially recommended to those who eat spicy food!

        Comments

        Login or register to add comments
      • Product Details

        Magnesium carbonate and calcium carbonate are commonly used as antacids in a variety of preparations. They alter the acidity of the stomach's juices, by binding to excess acid. This decreases the acidity of the contents of the stomach which may in turn help to relieve the symptoms of ulcers, heartburn or dyspepsia.

      Products you might be interested in