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	1.	Quantitation of R- and S-propafenone and of the main metabolite in plasma. [electronic resource] by Böhm, R Ellrich, R Koytchev, R Producer: 19951025 In: Die Pharmazie vol. 50 Availability: No items available. Save to lists Add to cart (remove)
	2.	Balm mint extract (Lo-701) for topical treatment of recurring herpes labialis. [electronic resource] by Koytchev, R Alken, R G Dundarov, S Producer: 20000118 In: Phytomedicine : international journal of phytotherapy and phytopharmacology vol. 6 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Effect of diprafenone on the pharmacokinetics of digoxin. [electronic resource] by Koytchev, R Alken, R G Mayer, O Producer: 19961024 In: European journal of clinical pharmacology vol. 50 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Comparison of the efficacy and endometrial safety of two estradiol valerate/dienogest combinations and Kliogest for continuous combined hormone replacement therapy in postmenopausal women. [electronic resource] by Gräser, T Koytchev, R Müller, A Oettel, M Producer: 20020408 In: Climacteric : the journal of the International Menopause Society vol. 3 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Serum concentration of piroxicam and inhibition of platelet aggregation in patients with rheumatoid arthritis and M. Bechterew. [electronic resource] by Koytchev, R Alken, R G Gromnica-Ihle, E Producer: 19950607 In: Agents and actions vol. 43 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Absolute bioavailability of oral immediate and slow release fluphenazine in healthy volunteers. [electronic resource] by Koytchev, R Alken, R G McKay, G Katzarov, T Producer: 19970204 In: European journal of clinical pharmacology vol. 51 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Therapeutic equivalence of two formulations of calcipotriol-betamethasone ointment: a multicentre, randomized, double-blind study in adult patients with chronic plaque psoriasis. [electronic resource] by Habjanic, N Koytchev, R Yankova, R Kerec-Kos, M Grabnar-Peklar, D Producer: 20191113 In: The British journal of dermatology vol. 179 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	Differences in the bioavailability of dihydrotachysterol preparations. [electronic resource] by Koytchev, R Alken, R G Vagaday, M Kunter, U Kirkov, V Producer: 19950112 In: European journal of clinical pharmacology vol. 47 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	Influence of food on the bioavailability and some pharmacokinetic parameters of diprafenone--a novel antiarrhythmic agent. [electronic resource] by Koytchev, R Alken, R G Mayer, O Smith, I Greenwood, M Producer: 19961127 In: European journal of clinical pharmacology vol. 50 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Bioequivalence studies with metformin: comparability of reference tablets from different origins. [electronic resource] by Vlahov, V Thyroff-Friesinger, U Koytchev, R Bakracheva, N Gatchev, E Producer: 20060104 In: International journal of clinical pharmacology and therapeutics vol. 43 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	11.	Pharmacokinetics of orally administered estradiol valerate. Results of a single-dose cross-over bioequivalence study in postmenopausal women. [electronic resource] by Zimmermann, H Koytchev, R Mayer, O Börner, A Mellinger, U Breitbarth, H Producer: 19990119 In: Arzneimittel-Forschung vol. 48 Availability: No items available. Save to lists Add to cart (remove)
	12.	Effect of epoetin zeta for correction of renal anemia in hemodialysis patients with thalassemia minor. [electronic resource] by Kumchev, E Koytchev, R Dimitrakov, D Stavrev, P Tsochev, G Siebert-Weigel, M Producer: 20091216 In: Advances in therapy vol. 25 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	13.	A randomized, double-blind, placebo-controlled study of the efficacy and safety of tolperisone in spasticity following cerebral stroke. [electronic resource] by Stamenova, P Koytchev, R Kuhn, K Hansen, C Horvath, F Ramm, S Pongratz, D Producer: 20050715 In: European journal of neurology vol. 12 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	14.	[Absolute bioavailability of chlorpromazine, promazine and promethazine]. [electronic resource] by Koytchev, R Alken, R G Kirkov, V Neshev, G Vagaday, M Kunter, U Producer: 19940504 In: Arzneimittel-Forschung vol. 44 Availability: No items available. Save to lists Add to cart (remove)
	15.	[A randomized, double blind, placebo-controlled study of the efficacy and safety of tolperisone in spasticity following cerebral stroke]. [electronic resource] by Stamenova, P Koytchev, R Kuhn, K Hanasen, C Horvath, F Ramm, S Pongratz, D Producer: 20060302 In: Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova vol. 106 Availability: No items available. Save to lists Add to cart (remove)
	16.	Comparative pharmacokinetic estimates of drospirenone alone and in combination with ethinyl estradiol after single and repeated oral administration in healthy females. [electronic resource] by Richter, W H Koytchev, R Kirkov, V Merki, G Colli, E Regidor, P-A Producer: 20210419 In: Contraception vol. 101 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	17.	[The bioequivalence of two oral propafenone preparations]. [electronic resource] by Koytchev, R Alken, R G Mayer, O Böhm, R Ellrich, A Waldner-Kölblin, R G Producer: 19950814 In: Arzneimittel-Forschung vol. 45 Availability: No items available. Save to lists Add to cart (remove)
	18.	Influence of the cytochrome P4502D6*4 allele on the pharmacokinetics of controlled-release metoprolol. [electronic resource] by Koytchev, R Alken, R G Vlahov, V Kirkov, V Kaneva, R Thyroff-Friesinger, U Rehak, E Producer: 19981217 In: European journal of clinical pharmacology vol. 54 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	19.	Evaluation of the efficacy of a combined formulation (Grippostad-C) in the therapy of symptoms of common cold: a randomized, double-blind, multicenter trial. [electronic resource] by Koytchev, R Vlahov, V Bacratcheva, N Giesel, B Gawronska-Szklarz, B Wojcicki, J Mrozikiewiczs, A van der Meer, M Alken, R G Producer: 20030804 In: International journal of clinical pharmacology and therapeutics vol. 41 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)