From Saccharin to Synephrine, learn about the safety of the most common medications during pregnancy and breastfeeding with the following general overview of drugs that begin with the letter S.
| Medication | Pregnancy Risk Category | Breastfeeding Risk Category |
| S-adenosyl-l-methionine | Probably Safe | L3 |
| Saccharin | C | L3 |
| Sage (Dalmatian Sage, Spanish Sage) |
Possibly Hazardous | L4 |
| Salicylamide | Probably Safe | L3 |
| Salicylic Acid, Topical (Occlusal-HP) |
Possibly Hazardous | L3 |
| Saline Laxatives (Milk of Magnesia, Fleet, Visicol, Tridate, X-Prep) |
Probably Safe | L2 |
| Salmeterol Xinafoate (Serevent) |
C | L2 |
| Salsalate (Amigesic, Salflex, Disalcid) |
C (first, second trimesters) D (third trimester) |
L4 |
| Saquinavir (Fortovase, Invirase) |
B | L3 |
| Scopolamine (Transderm Scope, Transderm-V, Buscopan, Benacine, Scopoderm TTS) |
C | L3 |
| Secobarbital (Seconal, Novo-Secobarb) |
D | L3 |
| Selegiline (Eldepryl, Emsam, Zelapar) |
C | L4 |
| Selenium (Selenicaps, Selenimin, SE-Aspartate, Se-100) |
C | L3 |
| Selenium Sulfide (Selsun, Excel, Head and Shoulders, Selsun Blue) |
C | L3 |
| Senna Laxatives (Senokot, Senexon, Ex Lax, Senna-Gen, Black-Draught, Fletcher, Castoria, Agoral) |
C | L3 |
| Sertraline (Zoloft, Lustral) |
C | L2 |
| Sevelamer Hydrochloride (Renagel) |
C | L3 |
| Sevoflurane (Ultane) |
B | L3 |
| Sibutramine (Meridia) |
C | L4 |
| Sildenafil (Viagra, Revatio) |
B | L3 |
| Silodosin (Rapaflo) |
B | L3 |
| Silver | Possibly Hazardous | L4 |
| Silver Sulfadiazine (Silvadene, SSD Cream, Thermazene, Flamazine, Dermazin, Silvazine) |
B (first, second trimesters) X (third trimester) |
L3 |
| Simethicone (Mylicon, Gas-X, Maalox Anti-Gas, Mylanta Gas, Genasyme, Mytab Gas, Phazyme, Alka-Seltzer Anti-Gas) |
Probably Safe | L3 |
| Simvastatin (Zocor, Lipex) |
X | L3 |
| Sincalide (Kinevac) |
B | L3 |
| Sirolimus (Rapamune, Rapamycin, NSC-226080) |
C | L4 |
| Sitagliptin Phosphate (Januvia) |
B | L3 |
| Smallpox Vaccine (Dryvax) |
C | L4 |
| Sodium Oxybate (Xyrem) |
B | L4 |
| Sodium Phosphate Dibasic – Dibasic Anhydrous (Visicol, OsmoPrep) |
C | L3 |
| Sodium Tetradecyl Sulfate (Sotradecol) |
C | L3 |
| Solifenacin Succinate (VESIcare) |
C | L4 |
| Somatrem, Somatropin (Human Growth Hormone, Nutropin, Humatrope, Growth Hormone, Saizen, Protropin, Genotropin, Norditropin) |
C | L3 |
| Sotalol (Betapace, Sotacor, Apo-Sotalol, Rylosol, Cardol) |
B | L3 |
| Spinosad (ParaPro Natrodba Topical Suspension, Natroba) |
B | L3 |
| Spironolactone (Aldactone, Novospiroton, Spiractin) |
D | L2 |
| St. John’s Wort | C | L2 |
| Stavudine (Zerit) |
C | L4 |
| Stevia | Probably Safe | L3 |
| Streptomycin (Streptobretin, Streptotriad) |
D | L3 |
| Strontium-89 Chloride (Metastron) |
D | L5 |
| Succimer (Chemet) |
C | L3 |
| Sucralfate (Carafate, Sulcrate, Novo-Sucralfate, Nu-Sucralfate, SCF, Ulcyte, Antepsin) |
B | L2 |
| Sucralose (Splenda) |
Probably Safe | L2 |
| Sulbactam | Safer | L1 |
| Sulconazole Nitrate (Exelderm) |
C | L3 |
| Sulfacetamide Sodium Ophthalmic Drops (Bleph-10, Isopto Cetamide, Sulf-10) |
C | L2 |
| Sulfamethoxazole (Gantanol, Apo-Methoxazole, Bactrim, Resprim, Septrin) |
C (first, second trimesters) D (third trimester) |
L3 |
| Sulfamethoxazole + Trimethoprim (Bactrim, Septra, Sulfatrim, Cotrim, Duclor, Resprim-Forte, Apo-Sulfatrim, Novo-Trimel, Novo-Trimox, Cotrimox) |
C | L3 |
| Sulfasalazine (Azulfidine, PMS Sulfasalazine, Salazopyrin, SAS-500) |
B (first, second trimesters) D (third trimester) |
L3 |
| Sulfisoxazole (Gantrisin, AZO-Gantrisin, Novo-Soxazole, Sulfizole) |
C | L2 |
| Sulpiride (Dolmatil, Sulparax, Sulpital) |
Possibly Hazardous | L2 |
| Sumatriptan Succinate (Imitrex, Treximet, Imigran) |
C | L3 |
| Synephrine (Bitter Orange, Advantra, Oxedrine) |
Possibly Hazardous | L4 |
Pregnancy Risk Categories
A. Controlled Studies Show No Risk
Adequate, well-controlled studies in pregnant women have failed to demonstrate a risk to the fetus in any trimester of pregnancy.
B. No Evidence of Risk in Humans
Adequate, well-controlled studies in pregnant women have not shown increased risk of fetal abnormalities despite adverse findings in animals, or, in the absence of adequate human studies, animal studies show no fetal risk. The chance of fetal harm is remote but remains a possibility.
C. Risk Cannot Be Ruled Out
Adequate,well-controlled human studies are lacking, and animal studies have shown a risk to the fetus or are lacking as well. There is a chance of fetal harm if the drug is administered during pregnancy, but the potential benefits may outweigh the potential risks.
D. Positive Evidence of Risk
Studies in humans, or investigational or post-marketing data, have demonstrated fetal risk. Nevertheless, potential benefits from the use of the drug may outweigh the potential risk. For example, the drug may be acceptable if needed in a life-threatening situation or serious disease for which safer drugs cannot be used or are ineffective.
X. Contraindicated in Pregnancy
Studies in animals or humans, or investigational or post-marketing reports, have demonstrated positive evidence of fetal abnormalities or risks which clearly outweighs any possible benefit to the patient.
Breastfeeding Risk Categories
L1. Safest
Drug which has been taken by a large number of breastfeeding mothers without any observed increase in adverse effects in the infant. Controlled studies in breastfeeding women fail to demonstrate a risk to the infant and the possibility of harm to the breastfeeding infant is remote, or the product is not orally bioavailable in an infant.
L2. Safer
Drug which has been studied in a limited number of breastfeeding women without an increase in adverse effects in the infant; and/or, the evidence of a demonstrated risk which is likely to follow use of this medication in a breastfeeding woman is remote.
L3. Moderately Safe
There are no controlled studies in breastfeeding women; however, the risk of untoward effects to a breastfed infant is possible; or, controlled studies show only minimal non-threatening adverse effects. Drugs should be given only if the potential benefit justifies the potential risk to the infant.
L4. Possibly Hazardous
There is positive evidence of risk to a breastfed infant or to breastmilk production, but the benefits of use in breastfeeding mothers may be acceptable despite the risk to the infant (e.g. if the drug is needed in a life-threatening situation or for a serious disease for which safer drugs cannot be used or are ineffective).
L5. Contraindicated
Studies in breastfeeding mothers have demonstrated that there is significant and documented risk to the infant based on human experience, or it is a medication that has a high risk of causing significant damage to an infant. The risk of using the drug in breastfeeding women clearly outweighs any possible benefit from breastfeeding. The drug is contraindicated in women who are breastfeeding an infant.
Disclaimer: The information provided in this article is not meant to replace the professional medical advice from your health care provider. For detailed information on specific medications or for information on medications not listed, please consult your health care provider.
References
Hale, Thomas W. 2008. Medications and mothers’ milk, 13th edn. Amarillo, Texas: Hale Publishing.
Hale, Thomas W. 2010. Medications and mothers’ milk, 14th edn. Amarillo, Texas: Hale Publishing.
Hale, Thomas W. 2012. Medications and mothers’ milk, 15th edn. Amarillo, Texas: Hale Publishing.
Safe Fetus: http://safefetus.com/index.php
Search Medica RX: http://www.mims.com/USA
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